Use govendor

209 files changed, 39075 insertions, 0 deletions

diff --git a/vendor/github.com/BurntSushi/toml/COMPATIBLE b/vendor/github.com/BurntSushi/toml/COMPATIBLE
new file mode 100644
index 0000000..21e0938
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/COMPATIBLE
@@ -0,0 +1,3 @@
+Compatible with TOML version
+[v0.2.0](https://github.com/mojombo/toml/blob/master/versions/toml-v0.2.0.md)
+
diff --git a/vendor/github.com/BurntSushi/toml/COPYING b/vendor/github.com/BurntSushi/toml/COPYING
new file mode 100644
index 0000000..5a8e332
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/COPYING
@@ -0,0 +1,14 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
+
diff --git a/vendor/github.com/BurntSushi/toml/Makefile b/vendor/github.com/BurntSushi/toml/Makefile
new file mode 100644
index 0000000..3600848
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/Makefile
@@ -0,0 +1,19 @@
+install:
+	go install ./...
+
+test: install
+	go test -v
+	toml-test toml-test-decoder
+	toml-test -encoder toml-test-encoder
+
+fmt:
+	gofmt -w *.go */*.go
+	colcheck *.go */*.go
+
+tags:
+	find ./ -name '*.go' -print0 | xargs -0 gotags > TAGS
+
+push:
+	git push origin master
+	git push github master
+
diff --git a/vendor/github.com/BurntSushi/toml/README.md b/vendor/github.com/BurntSushi/toml/README.md
new file mode 100644
index 0000000..5a5df63
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/README.md
@@ -0,0 +1,220 @@
+## TOML parser and encoder for Go with reflection
+
+TOML stands for Tom's Obvious, Minimal Language. This Go package provides a
+reflection interface similar to Go's standard library `json` and `xml` 
+packages. This package also supports the `encoding.TextUnmarshaler` and
+`encoding.TextMarshaler` interfaces so that you can define custom data 
+representations. (There is an example of this below.)
+
+Spec: https://github.com/mojombo/toml
+
+Compatible with TOML version
+[v0.2.0](https://github.com/toml-lang/toml/blob/master/versions/en/toml-v0.2.0.md)
+
+Documentation: http://godoc.org/github.com/BurntSushi/toml
+
+Installation:
+
+```bash
+go get github.com/BurntSushi/toml
+```
+
+Try the toml validator:
+
+```bash
+go get github.com/BurntSushi/toml/cmd/tomlv
+tomlv some-toml-file.toml
+```
+
+[![Build status](https://api.travis-ci.org/BurntSushi/toml.png)](https://travis-ci.org/BurntSushi/toml)
+
+
+### Testing
+
+This package passes all tests in
+[toml-test](https://github.com/BurntSushi/toml-test) for both the decoder
+and the encoder.
+
+### Examples
+
+This package works similarly to how the Go standard library handles `XML`
+and `JSON`. Namely, data is loaded into Go values via reflection.
+
+For the simplest example, consider some TOML file as just a list of keys
+and values:
+
+```toml
+Age = 25
+Cats = [ "Cauchy", "Plato" ]
+Pi = 3.14
+Perfection = [ 6, 28, 496, 8128 ]
+DOB = 1987-07-05T05:45:00Z
+```
+
+Which could be defined in Go as:
+
+```go
+type Config struct {
+  Age int
+  Cats []string
+  Pi float64
+  Perfection []int
+  DOB time.Time // requires `import time`
+}
+```
+
+And then decoded with:
+
+```go
+var conf Config
+if _, err := toml.Decode(tomlData, &conf); err != nil {
+  // handle error
+}
+```
+
+You can also use struct tags if your struct field name doesn't map to a TOML
+key value directly:
+
+```toml
+some_key_NAME = "wat"
+```
+
+```go
+type TOML struct {
+  ObscureKey string `toml:"some_key_NAME"`
+}
+```
+
+### Using the `encoding.TextUnmarshaler` interface
+
+Here's an example that automatically parses duration strings into 
+`time.Duration` values:
+
+```toml
+[[song]]
+name = "Thunder Road"
+duration = "4m49s"
+
+[[song]]
+name = "Stairway to Heaven"
+duration = "8m03s"
+```
+
+Which can be decoded with:
+
+```go
+type song struct {
+  Name     string
+  Duration duration
+}
+type songs struct {
+  Song []song
+}
+var favorites songs
+if _, err := toml.Decode(blob, &favorites); err != nil {
+  log.Fatal(err)
+}
+
+for _, s := range favorites.Song {
+  fmt.Printf("%s (%s)\n", s.Name, s.Duration)
+}
+```
+
+And you'll also need a `duration` type that satisfies the 
+`encoding.TextUnmarshaler` interface:
+
+```go
+type duration struct {
+	time.Duration
+}
+
+func (d *duration) UnmarshalText(text []byte) error {
+	var err error
+	d.Duration, err = time.ParseDuration(string(text))
+	return err
+}
+```
+
+### More complex usage
+
+Here's an example of how to load the example from the official spec page:
+
+```toml
+# This is a TOML document. Boom.
+
+title = "TOML Example"
+
+[owner]
+name = "Tom Preston-Werner"
+organization = "GitHub"
+bio = "GitHub Cofounder & CEO\nLikes tater tots and beer."
+dob = 1979-05-27T07:32:00Z # First class dates? Why not?
+
+[database]
+server = "192.168.1.1"
+ports = [ 8001, 8001, 8002 ]
+connection_max = 5000
+enabled = true
+
+[servers]
+
+  # You can indent as you please. Tabs or spaces. TOML don't care.
+  [servers.alpha]
+  ip = "10.0.0.1"
+  dc = "eqdc10"
+
+  [servers.beta]
+  ip = "10.0.0.2"
+  dc = "eqdc10"
+
+[clients]
+data = [ ["gamma", "delta"], [1, 2] ] # just an update to make sure parsers support it
+
+# Line breaks are OK when inside arrays
+hosts = [
+  "alpha",
+  "omega"
+]
+```
+
+And the corresponding Go types are:
+
+```go
+type tomlConfig struct {
+	Title string
+	Owner ownerInfo
+	DB database `toml:"database"`
+	Servers map[string]server
+	Clients clients
+}
+
+type ownerInfo struct {
+	Name string
+	Org string `toml:"organization"`
+	Bio string
+	DOB time.Time
+}
+
+type database struct {
+	Server string
+	Ports []int
+	ConnMax int `toml:"connection_max"`
+	Enabled bool
+}
+
+type server struct {
+	IP string
+	DC string
+}
+
+type clients struct {
+	Data [][]interface{}
+	Hosts []string
+}
+```
+
+Note that a case insensitive match will be tried if an exact match can't be
+found.
+
+A working example of the above can be found in `_examples/example.{go,toml}`.
+
diff --git a/vendor/github.com/BurntSushi/toml/decode.go b/vendor/github.com/BurntSushi/toml/decode.go
new file mode 100644
index 0000000..98c8aa6
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/decode.go
@@ -0,0 +1,512 @@
+package toml
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"math"
+	"reflect"
+	"strings"
+	"time"
+)
+
+var e = fmt.Errorf
+
+// Unmarshaler is the interface implemented by objects that can unmarshal a
+// TOML description of themselves.
+type Unmarshaler interface {
+	UnmarshalTOML(interface{}) error
+}
+
+// Unmarshal decodes the contents of `p` in TOML format into a pointer `v`.
+func Unmarshal(p []byte, v interface{}) error {
+	_, err := Decode(string(p), v)
+	return err
+}
+
+// Primitive is a TOML value that hasn't been decoded into a Go value.
+// When using the various `Decode*` functions, the type `Primitive` may
+// be given to any value, and its decoding will be delayed.
+//
+// A `Primitive` value can be decoded using the `PrimitiveDecode` function.
+//
+// The underlying representation of a `Primitive` value is subject to change.
+// Do not rely on it.
+//
+// N.B. Primitive values are still parsed, so using them will only avoid
+// the overhead of reflection. They can be useful when you don't know the
+// exact type of TOML data until run time.
+type Primitive struct {
+	undecoded interface{}
+	context   Key
+}
+
+// DEPRECATED!
+//
+// Use MetaData.PrimitiveDecode instead.
+func PrimitiveDecode(primValue Primitive, v interface{}) error {
+	md := MetaData{decoded: make(map[string]bool)}
+	return md.unify(primValue.undecoded, rvalue(v))
+}
+
+// PrimitiveDecode is just like the other `Decode*` functions, except it
+// decodes a TOML value that has already been parsed. Valid primitive values
+// can *only* be obtained from values filled by the decoder functions,
+// including this method. (i.e., `v` may contain more `Primitive`
+// values.)
+//
+// Meta data for primitive values is included in the meta data returned by
+// the `Decode*` functions with one exception: keys returned by the Undecoded
+// method will only reflect keys that were decoded. Namely, any keys hidden
+// behind a Primitive will be considered undecoded. Executing this method will
+// update the undecoded keys in the meta data. (See the example.)
+func (md *MetaData) PrimitiveDecode(primValue Primitive, v interface{}) error {
+	md.context = primValue.context
+	defer func() { md.context = nil }()
+	return md.unify(primValue.undecoded, rvalue(v))
+}
+
+// Decode will decode the contents of `data` in TOML format into a pointer
+// `v`.
+//
+// TOML hashes correspond to Go structs or maps. (Dealer's choice. They can be
+// used interchangeably.)
+//
+// TOML arrays of tables correspond to either a slice of structs or a slice
+// of maps.
+//
+// TOML datetimes correspond to Go `time.Time` values.
+//
+// All other TOML types (float, string, int, bool and array) correspond
+// to the obvious Go types.
+//
+// An exception to the above rules is if a type implements the
+// encoding.TextUnmarshaler interface. In this case, any primitive TOML value
+// (floats, strings, integers, booleans and datetimes) will be converted to
+// a byte string and given to the value's UnmarshalText method. See the
+// Unmarshaler example for a demonstration with time duration strings.
+//
+// Key mapping
+//
+// TOML keys can map to either keys in a Go map or field names in a Go
+// struct. The special `toml` struct tag may be used to map TOML keys to
+// struct fields that don't match the key name exactly. (See the example.)
+// A case insensitive match to struct names will be tried if an exact match
+// can't be found.
+//
+// The mapping between TOML values and Go values is loose. That is, there
+// may exist TOML values that cannot be placed into your representation, and
+// there may be parts of your representation that do not correspond to
+// TOML values. This loose mapping can be made stricter by using the IsDefined
+// and/or Undecoded methods on the MetaData returned.
+//
+// This decoder will not handle cyclic types. If a cyclic type is passed,
+// `Decode` will not terminate.
+func Decode(data string, v interface{}) (MetaData, error) {
+	rv := reflect.ValueOf(v)
+	if rv.Kind() != reflect.Ptr {
+		return MetaData{}, e("Decode of non-pointer type %s", reflect.TypeOf(v))
+	}
+	if rv.IsNil() {
+		return MetaData{}, e("Decode of nil %s", reflect.TypeOf(v))
+	}
+	p, err := parse(data)
+	if err != nil {
+		return MetaData{}, err
+	}
+	md := MetaData{
+		p.mapping, p.types, p.ordered,
+		make(map[string]bool, len(p.ordered)), nil,
+	}
+	return md, md.unify(p.mapping, indirect(rv))
+}
+
+// DecodeFile is just like Decode, except it will automatically read the
+// contents of the file at `fpath` and decode it for you.
+func DecodeFile(fpath string, v interface{}) (MetaData, error) {
+	bs, err := ioutil.ReadFile(fpath)
+	if err != nil {
+		return MetaData{}, err
+	}
+	return Decode(string(bs), v)
+}
+
+// DecodeReader is just like Decode, except it will consume all bytes
+// from the reader and decode it for you.
+func DecodeReader(r io.Reader, v interface{}) (MetaData, error) {
+	bs, err := ioutil.ReadAll(r)
+	if err != nil {
+		return MetaData{}, err
+	}
+	return Decode(string(bs), v)
+}
+
+// unify performs a sort of type unification based on the structure of `rv`,
+// which is the client representation.
+//
+// Any type mismatch produces an error. Finding a type that we don't know
+// how to handle produces an unsupported type error.
+func (md *MetaData) unify(data interface{}, rv reflect.Value) error {
+
+	// Special case. Look for a `Primitive` value.
+	if rv.Type() == reflect.TypeOf((*Primitive)(nil)).Elem() {
+		// Save the undecoded data and the key context into the primitive
+		// value.
+		context := make(Key, len(md.context))
+		copy(context, md.context)
+		rv.Set(reflect.ValueOf(Primitive{
+			undecoded: data,
+			context:   context,
+		}))
+		return nil
+	}
+
+	// Special case. Unmarshaler Interface support.
+	if rv.CanAddr() {
+		if v, ok := rv.Addr().Interface().(Unmarshaler); ok {
+			return v.UnmarshalTOML(data)
+		}
+	}
+
+	// Special case. Handle time.Time values specifically.
+	// TODO: Remove this code when we decide to drop support for Go 1.1.
+	// This isn't necessary in Go 1.2 because time.Time satisfies the encoding
+	// interfaces.
+	if rv.Type().AssignableTo(rvalue(time.Time{}).Type()) {
+		return md.unifyDatetime(data, rv)
+	}
+
+	// Special case. Look for a value satisfying the TextUnmarshaler interface.
+	if v, ok := rv.Interface().(TextUnmarshaler); ok {
+		return md.unifyText(data, v)
+	}
+	// BUG(burntsushi)
+	// The behavior here is incorrect whenever a Go type satisfies the
+	// encoding.TextUnmarshaler interface but also corresponds to a TOML
+	// hash or array. In particular, the unmarshaler should only be applied
+	// to primitive TOML values. But at this point, it will be applied to
+	// all kinds of values and produce an incorrect error whenever those values
+	// are hashes or arrays (including arrays of tables).
+
+	k := rv.Kind()
+
+	// laziness
+	if k >= reflect.Int && k <= reflect.Uint64 {
+		return md.unifyInt(data, rv)
+	}
+	switch k {
+	case reflect.Ptr:
+		elem := reflect.New(rv.Type().Elem())
+		err := md.unify(data, reflect.Indirect(elem))
+		if err != nil {
+			return err
+		}
+		rv.Set(elem)
+		return nil
+	case reflect.Struct:
+		return md.unifyStruct(data, rv)
+	case reflect.Map:
+		return md.unifyMap(data, rv)
+	case reflect.Array:
+		return md.unifyArray(data, rv)
+	case reflect.Slice:
+		return md.unifySlice(data, rv)
+	case reflect.String:
+		return md.unifyString(data, rv)
+	case reflect.Bool:
+		return md.unifyBool(data, rv)
+	case reflect.Interface:
+		// we only support empty interfaces.
+		if rv.NumMethod() > 0 {
+			return e("Unsupported type '%s'.", rv.Kind())
+		}
+		return md.unifyAnything(data, rv)
+	case reflect.Float32:
+		fallthrough
+	case reflect.Float64:
+		return md.unifyFloat64(data, rv)
+	}
+	return e("Unsupported type '%s'.", rv.Kind())
+}
+
+func (md *MetaData) unifyStruct(mapping interface{}, rv reflect.Value) error {
+	tmap, ok := mapping.(map[string]interface{})
+	if !ok {
+		if mapping == nil {
+			return nil
+		}
+		return mismatch(rv, "map", mapping)
+	}
+
+	for key, datum := range tmap {
+		var f *field
+		fields := cachedTypeFields(rv.Type())
+		for i := range fields {
+			ff := &fields[i]
+			if ff.name == key {
+				f = ff
+				break
+			}
+			if f == nil && strings.EqualFold(ff.name, key) {
+				f = ff
+			}
+		}
+		if f != nil {
+			subv := rv
+			for _, i := range f.index {
+				subv = indirect(subv.Field(i))
+			}
+			if isUnifiable(subv) {
+				md.decoded[md.context.add(key).String()] = true
+				md.context = append(md.context, key)
+				if err := md.unify(datum, subv); err != nil {
+					return e("Type mismatch for '%s.%s': %s",
+						rv.Type().String(), f.name, err)
+				}
+				md.context = md.context[0 : len(md.context)-1]
+			} else if f.name != "" {
+				// Bad user! No soup for you!
+				return e("Field '%s.%s' is unexported, and therefore cannot "+
+					"be loaded with reflection.", rv.Type().String(), f.name)
+			}
+		}
+	}
+	return nil
+}
+
+func (md *MetaData) unifyMap(mapping interface{}, rv reflect.Value) error {
+	tmap, ok := mapping.(map[string]interface{})
+	if !ok {
+		if tmap == nil {
+			return nil
+		}
+		return badtype("map", mapping)
+	}
+	if rv.IsNil() {
+		rv.Set(reflect.MakeMap(rv.Type()))
+	}
+	for k, v := range tmap {
+		md.decoded[md.context.add(k).String()] = true
+		md.context = append(md.context, k)
+
+		rvkey := indirect(reflect.New(rv.Type().Key()))
+		rvval := reflect.Indirect(reflect.New(rv.Type().Elem()))
+		if err := md.unify(v, rvval); err != nil {
+			return err
+		}
+		md.context = md.context[0 : len(md.context)-1]
+
+		rvkey.SetString(k)
+		rv.SetMapIndex(rvkey, rvval)
+	}
+	return nil
+}
+
+func (md *MetaData) unifyArray(data interface{}, rv reflect.Value) error {
+	datav := reflect.ValueOf(data)
+	if datav.Kind() != reflect.Slice {
+		if !datav.IsValid() {
+			return nil
+		}
+		return badtype("slice", data)
+	}
+	sliceLen := datav.Len()
+	if sliceLen != rv.Len() {
+		return e("expected array length %d; got TOML array of length %d",
+			rv.Len(), sliceLen)
+	}
+	return md.unifySliceArray(datav, rv)
+}
+
+func (md *MetaData) unifySlice(data interface{}, rv reflect.Value) error {
+	datav := reflect.ValueOf(data)
+	if datav.Kind() != reflect.Slice {
+		if !datav.IsValid() {
+			return nil
+		}
+		return badtype("slice", data)
+	}
+	n := datav.Len()
+	if rv.IsNil() || rv.Cap() < n {
+		rv.Set(reflect.MakeSlice(rv.Type(), n, n))
+	}
+	rv.SetLen(n)
+	return md.unifySliceArray(datav, rv)
+}
+
+func (md *MetaData) unifySliceArray(data, rv reflect.Value) error {
+	sliceLen := data.Len()
+	for i := 0; i < sliceLen; i++ {
+		v := data.Index(i).Interface()
+		sliceval := indirect(rv.Index(i))
+		if err := md.unify(v, sliceval); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (md *MetaData) unifyDatetime(data interface{}, rv reflect.Value) error {
+	if _, ok := data.(time.Time); ok {
+		rv.Set(reflect.ValueOf(data))
+		return nil
+	}
+	return badtype("time.Time", data)
+}
+
+func (md *MetaData) unifyString(data interface{}, rv reflect.Value) error {
+	if s, ok := data.(string); ok {
+		rv.SetString(s)
+		return nil
+	}
+	return badtype("string", data)
+}
+
+func (md *MetaData) unifyFloat64(data interface{}, rv reflect.Value) error {
+	if num, ok := data.(float64); ok {
+		switch rv.Kind() {
+		case reflect.Float32:
+			fallthrough
+		case reflect.Float64:
+			rv.SetFloat(num)
+		default:
+			panic("bug")
+		}
+		return nil
+	}
+	return badtype("float", data)
+}
+
+func (md *MetaData) unifyInt(data interface{}, rv reflect.Value) error {
+	if num, ok := data.(int64); ok {
+		if rv.Kind() >= reflect.Int && rv.Kind() <= reflect.Int64 {
+			switch rv.Kind() {
+			case reflect.Int, reflect.Int64:
+				// No bounds checking necessary.
+			case reflect.Int8:
+				if num < math.MinInt8 || num > math.MaxInt8 {
+					return e("Value '%d' is out of range for int8.", num)
+				}
+			case reflect.Int16:
+				if num < math.MinInt16 || num > math.MaxInt16 {
+					return e("Value '%d' is out of range for int16.", num)
+				}
+			case reflect.Int32:
+				if num < math.MinInt32 || num > math.MaxInt32 {
+					return e("Value '%d' is out of range for int32.", num)
+				}
+			}
+			rv.SetInt(num)
+		} else if rv.Kind() >= reflect.Uint && rv.Kind() <= reflect.Uint64 {
+			unum := uint64(num)
+			switch rv.Kind() {
+			case reflect.Uint, reflect.Uint64:
+				// No bounds checking necessary.
+			case reflect.Uint8:
+				if num < 0 || unum > math.MaxUint8 {
+					return e("Value '%d' is out of range for uint8.", num)
+				}
+			case reflect.Uint16:
+				if num < 0 || unum > math.MaxUint16 {
+					return e("Value '%d' is out of range for uint16.", num)
+				}
+			case reflect.Uint32:
+				if num < 0 || unum > math.MaxUint32 {
+					return e("Value '%d' is out of range for uint32.", num)
+				}
+			}
+			rv.SetUint(unum)
+		} else {
+			panic("unreachable")
+		}
+		return nil
+	}
+	return badtype("integer", data)
+}
+
+func (md *MetaData) unifyBool(data interface{}, rv reflect.Value) error {
+	if b, ok := data.(bool); ok {
+		rv.SetBool(b)
+		return nil
+	}
+	return badtype("boolean", data)
+}
+
+func (md *MetaData) unifyAnything(data interface{}, rv reflect.Value) error {
+	rv.Set(reflect.ValueOf(data))
+	return nil
+}
+
+func (md *MetaData) unifyText(data interface{}, v TextUnmarshaler) error {
+	var s string
+	switch sdata := data.(type) {
+	case TextMarshaler:
+		text, err := sdata.MarshalText()
+		if err != nil {
+			return err
+		}
+		s = string(text)
+	case fmt.Stringer:
+		s = sdata.String()
+	case string:
+		s = sdata
+	case bool:
+		s = fmt.Sprintf("%v", sdata)
+	case int64:
+		s = fmt.Sprintf("%d", sdata)
+	case float64:
+		s = fmt.Sprintf("%f", sdata)
+	default:
+		return badtype("primitive (string-like)", data)
+	}
+	if err := v.UnmarshalText([]byte(s)); err != nil {
+		return err
+	}
+	return nil
+}
+
+// rvalue returns a reflect.Value of `v`. All pointers are resolved.
+func rvalue(v interface{}) reflect.Value {
+	return indirect(reflect.ValueOf(v))
+}
+
+// indirect returns the value pointed to by a pointer.
+// Pointers are followed until the value is not a pointer.
+// New values are allocated for each nil pointer.
+//
+// An exception to this rule is if the value satisfies an interface of
+// interest to us (like encoding.TextUnmarshaler).
+func indirect(v reflect.Value) reflect.Value {
+	if v.Kind() != reflect.Ptr {
+		if v.CanAddr() {
+			pv := v.Addr()
+			if _, ok := pv.Interface().(TextUnmarshaler); ok {
+				return pv
+			}
+		}
+		return v
+	}
+	if v.IsNil() {
+		v.Set(reflect.New(v.Type().Elem()))
+	}
+	return indirect(reflect.Indirect(v))
+}
+
+func isUnifiable(rv reflect.Value) bool {
+	if rv.CanSet() {
+		return true
+	}
+	if _, ok := rv.Interface().(TextUnmarshaler); ok {
+		return true
+	}
+	return false
+}
+
+func badtype(expected string, data interface{}) error {
+	return e("Expected %s but found '%T'.", expected, data)
+}
+
+func mismatch(user reflect.Value, expected string, data interface{}) error {
+	return e("Type mismatch for %s. Expected %s but found '%T'.",
+		user.Type().String(), expected, data)
+}
diff --git a/vendor/github.com/BurntSushi/toml/decode_meta.go b/vendor/github.com/BurntSushi/toml/decode_meta.go
new file mode 100644
index 0000000..ef6f545
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/decode_meta.go
@@ -0,0 +1,122 @@
+package toml
+
+import "strings"
+
+// MetaData allows access to meta information about TOML data that may not
+// be inferrable via reflection. In particular, whether a key has been defined
+// and the TOML type of a key.
+type MetaData struct {
+	mapping map[string]interface{}
+	types   map[string]tomlType
+	keys    []Key
+	decoded map[string]bool
+	context Key // Used only during decoding.
+}
+
+// IsDefined returns true if the key given exists in the TOML data. The key
+// should be specified hierarchially. e.g.,
+//
+//	// access the TOML key 'a.b.c'
+//	IsDefined("a", "b", "c")
+//
+// IsDefined will return false if an empty key given. Keys are case sensitive.
+func (md *MetaData) IsDefined(key ...string) bool {
+	if len(key) == 0 {
+		return false
+	}
+
+	var hash map[string]interface{}
+	var ok bool
+	var hashOrVal interface{} = md.mapping
+	for _, k := range key {
+		if hash, ok = hashOrVal.(map[string]interface{}); !ok {
+			return false
+		}
+		if hashOrVal, ok = hash[k]; !ok {
+			return false
+		}
+	}
+	return true
+}
+
+// Type returns a string representation of the type of the key specified.
+//
+// Type will return the empty string if given an empty key or a key that
+// does not exist. Keys are case sensitive.
+func (md *MetaData) Type(key ...string) string {
+	fullkey := strings.Join(key, ".")
+	if typ, ok := md.types[fullkey]; ok {
+		return typ.typeString()
+	}
+	return ""
+}
+
+// Key is the type of any TOML key, including key groups. Use (MetaData).Keys
+// to get values of this type.
+type Key []string
+
+func (k Key) String() string {
+	return strings.Join(k, ".")
+}
+
+func (k Key) maybeQuotedAll() string {
+	var ss []string
+	for i := range k {
+		ss = append(ss, k.maybeQuoted(i))
+	}
+	return strings.Join(ss, ".")
+}
+
+func (k Key) maybeQuoted(i int) string {
+	quote := false
+	for _, c := range k[i] {
+		if !isBareKeyChar(c) {
+			quote = true
+			break
+		}
+	}
+	if quote {
+		return "\"" + strings.Replace(k[i], "\"", "\\\"", -1) + "\""
+	} else {
+		return k[i]
+	}
+}
+
+func (k Key) add(piece string) Key {
+	newKey := make(Key, len(k)+1)
+	copy(newKey, k)
+	newKey[len(k)] = piece
+	return newKey
+}
+
+// Keys returns a slice of every key in the TOML data, including key groups.
+// Each key is itself a slice, where the first element is the top of the
+// hierarchy and the last is the most specific.
+//
+// The list will have the same order as the keys appeared in the TOML data.
+//
+// All keys returned are non-empty.
+func (md *MetaData) Keys() []Key {
+	return md.keys
+}
+
+// Undecoded returns all keys that have not been decoded in the order in which
+// they appear in the original TOML document.
+//
+// This includes keys that haven't been decoded because of a Primitive value.
+// Once the Primitive value is decoded, the keys will be considered decoded.
+//
+// Also note that decoding into an empty interface will result in no decoding,
+// and so no keys will be considered decoded.
+//
+// In this sense, the Undecoded keys correspond to keys in the TOML document
+// that do not have a concrete type in your representation.
+func (md *MetaData) Undecoded() []Key {
+	undecoded := make([]Key, 0, len(md.keys))
+	for _, key := range md.keys {
+		if !md.decoded[key.String()] {
+			undecoded = append(undecoded, key)
+		}
+	}
+	return undecoded
+}
diff --git a/vendor/github.com/BurntSushi/toml/doc.go b/vendor/github.com/BurntSushi/toml/doc.go
new file mode 100644
index 0000000..fe26800
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/doc.go
@@ -0,0 +1,27 @@
+/*
+Package toml provides facilities for decoding and encoding TOML configuration
+files via reflection. There is also support for delaying decoding with
+the Primitive type, and querying the set of keys in a TOML document with the
+MetaData type.
+
+The specification implemented: https://github.com/mojombo/toml
+
+The sub-command github.com/BurntSushi/toml/cmd/tomlv can be used to verify
+whether a file is a valid TOML document. It can also be used to print the
+type of each key in a TOML document.
+
+Testing
+
+There are two important types of tests used for this package. The first is
+contained inside '*_test.go' files and uses the standard Go unit testing
+framework. These tests are primarily devoted to holistically testing the
+decoder and encoder.
+
+The second type of testing is used to verify the implementation's adherence
+to the TOML specification. These tests have been factored into their own
+project: https://github.com/BurntSushi/toml-test
+
+The reason the tests are in a separate project is so that they can be used by
+any implementation of TOML. Namely, it is language agnostic.
+*/
+package toml
diff --git a/vendor/github.com/BurntSushi/toml/encode.go b/vendor/github.com/BurntSushi/toml/encode.go
new file mode 100644
index 0000000..f538261
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/encode.go
@@ -0,0 +1,569 @@
+package toml
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type tomlEncodeError struct{ error }
+
+var (
+	errArrayMixedElementTypes = errors.New(
+		"can't encode array with mixed element types")
+	errArrayNilElement = errors.New(
+		"can't encode array with nil element")
+	errNonString = errors.New(
+		"can't encode a map with non-string key type")
+	errAnonNonStruct = errors.New(
+		"can't encode an anonymous field that is not a struct")
+	errArrayNoTable = errors.New(
+		"TOML array element can't contain a table")
+	errNoKey = errors.New(
+		"top-level values must be a Go map or struct")
+	errAnything = errors.New("") // used in testing
+)
+
+var quotedReplacer = strings.NewReplacer(
+	"\t", "\\t",
+	"\n", "\\n",
+	"\r", "\\r",
+	"\"", "\\\"",
+	"\\", "\\\\",
+)
+
+// Encoder controls the encoding of Go values to a TOML document to some
+// io.Writer.
+//
+// The indentation level can be controlled with the Indent field.
+type Encoder struct {
+	// A single indentation level. By default it is two spaces.
+	Indent string
+
+	// hasWritten is whether we have written any output to w yet.
+	hasWritten bool
+	w          *bufio.Writer
+}
+
+// NewEncoder returns a TOML encoder that encodes Go values to the io.Writer
+// given. By default, a single indentation level is 2 spaces.
+func NewEncoder(w io.Writer) *Encoder {
+	return &Encoder{
+		w:      bufio.NewWriter(w),
+		Indent: "  ",
+	}
+}
+
+// Encode writes a TOML representation of the Go value to the underlying
+// io.Writer. If the value given cannot be encoded to a valid TOML document,
+// then an error is returned.
+//
+// The mapping between Go values and TOML values should be precisely the same
+// as for the Decode* functions. Similarly, the TextMarshaler interface is
+// supported by encoding the resulting bytes as strings. (If you want to write
+// arbitrary binary data then you will need to use something like base64 since
+// TOML does not have any binary types.)
+//
+// When encoding TOML hashes (i.e., Go maps or structs), keys without any
+// sub-hashes are encoded first.
+//
+// If a Go map is encoded, then its keys are sorted alphabetically for
+// deterministic output. More control over this behavior may be provided if
+// there is demand for it.
+//
+// Encoding Go values without a corresponding TOML representation---like map
+// types with non-string keys---will cause an error to be returned. Similarly
+// for mixed arrays/slices, arrays/slices with nil elements, embedded
+// non-struct types and nested slices containing maps or structs.
+// (e.g., [][]map[string]string is not allowed but []map[string]string is OK
+// and so is []map[string][]string.)
+func (enc *Encoder) Encode(v interface{}) error {
+	rv := eindirect(reflect.ValueOf(v))
+	if err := enc.safeEncode(Key([]string{}), rv); err != nil {
+		return err
+	}
+	return enc.w.Flush()
+}
+
+func (enc *Encoder) safeEncode(key Key, rv reflect.Value) (err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			if terr, ok := r.(tomlEncodeError); ok {
+				err = terr.error
+				return
+			}
+			panic(r)
+		}
+	}()
+	enc.encode(key, rv)
+	return nil
+}
+
+func (enc *Encoder) encode(key Key, rv reflect.Value) {
+	// Special case. Time needs to be in ISO8601 format.
+	// Special case. If we can marshal the type to text, then we used that.
+	// Basically, this prevents the encoder for handling these types as
+	// generic structs (or whatever the underlying type of a TextMarshaler is).
+	switch rv.Interface().(type) {
+	case time.Time, TextMarshaler:
+		enc.keyEqElement(key, rv)
+		return
+	}
+
+	k := rv.Kind()
+	switch k {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
+		reflect.Int64,
+		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32,
+		reflect.Uint64,
+		reflect.Float32, reflect.Float64, reflect.String, reflect.Bool:
+		enc.keyEqElement(key, rv)
+	case reflect.Array, reflect.Slice:
+		if typeEqual(tomlArrayHash, tomlTypeOfGo(rv)) {
+			enc.eArrayOfTables(key, rv)
+		} else {
+			enc.keyEqElement(key, rv)
+		}
+	case reflect.Interface:
+		if rv.IsNil() {
+			return
+		}
+		enc.encode(key, rv.Elem())
+	case reflect.Map:
+		if rv.IsNil() {
+			return
+		}
+		enc.eTable(key, rv)
+	case reflect.Ptr:
+		if rv.IsNil() {
+			return
+		}
+		enc.encode(key, rv.Elem())
+	case reflect.Struct:
+		enc.eTable(key, rv)
+	default:
+		panic(e("Unsupported type for key '%s': %s", key, k))
+	}
+}
+
+// eElement encodes any value that can be an array element (primitives and
+// arrays).
+func (enc *Encoder) eElement(rv reflect.Value) {
+	switch v := rv.Interface().(type) {
+	case time.Time:
+		// Special case time.Time as a primitive. Has to come before
+		// TextMarshaler below because time.Time implements
+		// encoding.TextMarshaler, but we need to always use UTC.
+		enc.wf(v.In(time.FixedZone("UTC", 0)).Format("2006-01-02T15:04:05Z"))
+		return
+	case TextMarshaler:
+		// Special case. Use text marshaler if it's available for this value.
+		if s, err := v.MarshalText(); err != nil {
+			encPanic(err)
+		} else {
+			enc.writeQuoted(string(s))
+		}
+		return
+	}
+	switch rv.Kind() {
+	case reflect.Bool:
+		enc.wf(strconv.FormatBool(rv.Bool()))
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
+		reflect.Int64:
+		enc.wf(strconv.FormatInt(rv.Int(), 10))
+	case reflect.Uint, reflect.Uint8, reflect.Uint16,
+		reflect.Uint32, reflect.Uint64:
+		enc.wf(strconv.FormatUint(rv.Uint(), 10))
+	case reflect.Float32:
+		enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 32)))
+	case reflect.Float64:
+		enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 64)))
+	case reflect.Array, reflect.Slice:
+		enc.eArrayOrSliceElement(rv)
+	case reflect.Interface:
+		enc.eElement(rv.Elem())
+	case reflect.String:
+		enc.writeQuoted(rv.String())
+	default:
+		panic(e("Unexpected primitive type: %s", rv.Kind()))
+	}
+}
+
+// By the TOML spec, all floats must have a decimal with at least one
+// number on either side.
+func floatAddDecimal(fstr string) string {
+	if !strings.Contains(fstr, ".") {
+		return fstr + ".0"
+	}
+	return fstr
+}
+
+func (enc *Encoder) writeQuoted(s string) {
+	enc.wf("\"%s\"", quotedReplacer.Replace(s))
+}
+
+func (enc *Encoder) eArrayOrSliceElement(rv reflect.Value) {
+	length := rv.Len()
+	enc.wf("[")
+	for i := 0; i < length; i++ {
+		elem := rv.Index(i)
+		enc.eElement(elem)
+		if i != length-1 {
+			enc.wf(", ")
+		}
+	}
+	enc.wf("]")
+}
+
+func (enc *Encoder) eArrayOfTables(key Key, rv reflect.Value) {
+	if len(key) == 0 {
+		encPanic(errNoKey)
+	}
+	for i := 0; i < rv.Len(); i++ {
+		trv := rv.Index(i)
+		if isNil(trv) {
+			continue
+		}
+		panicIfInvalidKey(key)
+		enc.newline()
+		enc.wf("%s[[%s]]", enc.indentStr(key), key.maybeQuotedAll())
+		enc.newline()
+		enc.eMapOrStruct(key, trv)
+	}
+}
+
+func (enc *Encoder) eTable(key Key, rv reflect.Value) {
+	panicIfInvalidKey(key)
+	if len(key) == 1 {
+		// Output an extra new line between top-level tables.
+		// (The newline isn't written if nothing else has been written though.)
+		enc.newline()
+	}
+	if len(key) > 0 {
+		enc.wf("%s[%s]", enc.indentStr(key), key.maybeQuotedAll())
+		enc.newline()
+	}
+	enc.eMapOrStruct(key, rv)
+}
+
+func (enc *Encoder) eMapOrStruct(key Key, rv reflect.Value) {
+	switch rv := eindirect(rv); rv.Kind() {
+	case reflect.Map:
+		enc.eMap(key, rv)
+	case reflect.Struct:
+		enc.eStruct(key, rv)
+	default:
+		panic("eTable: unhandled reflect.Value Kind: " + rv.Kind().String())
+	}
+}
+
+func (enc *Encoder) eMap(key Key, rv reflect.Value) {
+	rt := rv.Type()
+	if rt.Key().Kind() != reflect.String {
+		encPanic(errNonString)
+	}
+
+	// Sort keys so that we have deterministic output. And write keys directly
+	// underneath this key first, before writing sub-structs or sub-maps.
+	var mapKeysDirect, mapKeysSub []string
+	for _, mapKey := range rv.MapKeys() {
+		k := mapKey.String()
+		if typeIsHash(tomlTypeOfGo(rv.MapIndex(mapKey))) {
+			mapKeysSub = append(mapKeysSub, k)
+		} else {
+			mapKeysDirect = append(mapKeysDirect, k)
+		}
+	}
+
+	var writeMapKeys = func(mapKeys []string) {
+		sort.Strings(mapKeys)
+		for _, mapKey := range mapKeys {
+			mrv := rv.MapIndex(reflect.ValueOf(mapKey))
+			if isNil(mrv) {
+				// Don't write anything for nil fields.
+				continue
+			}
+			enc.encode(key.add(mapKey), mrv)
+		}
+	}
+	writeMapKeys(mapKeysDirect)
+	writeMapKeys(mapKeysSub)
+}
+
+func (enc *Encoder) eStruct(key Key, rv reflect.Value) {
+	// Write keys for fields directly under this key first, because if we write
+	// a field that creates a new table, then all keys under it will be in that
+	// table (not the one we're writing here).
+	rt := rv.Type()
+	var fieldsDirect, fieldsSub [][]int
+	var addFields func(rt reflect.Type, rv reflect.Value, start []int)
+	addFields = func(rt reflect.Type, rv reflect.Value, start []int) {
+		for i := 0; i < rt.NumField(); i++ {
+			f := rt.Field(i)
+			// skip unexported fields
+			if f.PkgPath != "" && !f.Anonymous {
+				continue
+			}
+			frv := rv.Field(i)
+			if f.Anonymous {
+				t := f.Type
+				switch t.Kind() {
+				case reflect.Struct:
+					// Treat anonymous struct fields with
+					// tag names as though they are not
+					// anonymous, like encoding/json does.
+					if getOptions(f.Tag).name == "" {
+						addFields(t, frv, f.Index)
+						continue
+					}
+				case reflect.Ptr:
+					if t.Elem().Kind() == reflect.Struct &&
+						getOptions(f.Tag).name == "" {
+						if !frv.IsNil() {
+							addFields(t.Elem(), frv.Elem(), f.Index)
+						}
+						continue
+					}
+					// Fall through to the normal field encoding logic below
+					// for non-struct anonymous fields.
+				}
+			}
+
+			if typeIsHash(tomlTypeOfGo(frv)) {
+				fieldsSub = append(fieldsSub, append(start, f.Index...))
+			} else {
+				fieldsDirect = append(fieldsDirect, append(start, f.Index...))
+			}
+		}
+	}
+	addFields(rt, rv, nil)
+
+	var writeFields = func(fields [][]int) {
+		for _, fieldIndex := range fields {
+			sft := rt.FieldByIndex(fieldIndex)
+			sf := rv.FieldByIndex(fieldIndex)
+			if isNil(sf) {
+				// Don't write anything for nil fields.
+				continue
+			}
+
+			opts := getOptions(sft.Tag)
+			if opts.skip {
+				continue
+			}
+			keyName := sft.Name
+			if opts.name != "" {
+				keyName = opts.name
+			}
+			if opts.omitempty && isEmpty(sf) {
+				continue
+			}
+			if opts.omitzero && isZero(sf) {
+				continue
+			}
+
+			enc.encode(key.add(keyName), sf)
+		}
+	}
+	writeFields(fieldsDirect)
+	writeFields(fieldsSub)
+}
+
+// tomlTypeName returns the TOML type name of the Go value's type. It is
+// used to determine whether the types of array elements are mixed (which is
+// forbidden). If the Go value is nil, then it is illegal for it to be an array
+// element, and valueIsNil is returned as true.
+
+// Returns the TOML type of a Go value. The type may be `nil`, which means
+// no concrete TOML type could be found.
+func tomlTypeOfGo(rv reflect.Value) tomlType {
+	if isNil(rv) || !rv.IsValid() {
+		return nil
+	}
+	switch rv.Kind() {
+	case reflect.Bool:
+		return tomlBool
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
+		reflect.Int64,
+		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32,
+		reflect.Uint64:
+		return tomlInteger
+	case reflect.Float32, reflect.Float64:
+		return tomlFloat
+	case reflect.Array, reflect.Slice:
+		if typeEqual(tomlHash, tomlArrayType(rv)) {
+			return tomlArrayHash
+		} else {
+			return tomlArray
+		}
+	case reflect.Ptr, reflect.Interface:
+		return tomlTypeOfGo(rv.Elem())
+	case reflect.String:
+		return tomlString
+	case reflect.Map:
+		return tomlHash
+	case reflect.Struct:
+		switch rv.Interface().(type) {
+		case time.Time:
+			return tomlDatetime
+		case TextMarshaler:
+			return tomlString
+		default:
+			return tomlHash
+		}
+	default:
+		panic("unexpected reflect.Kind: " + rv.Kind().String())
+	}
+}
+
+// tomlArrayType returns the element type of a TOML array. The type returned
+// may be nil if it cannot be determined (e.g., a nil slice or a zero length
+// slize). This function may also panic if it finds a type that cannot be
+// expressed in TOML (such as nil elements, heterogeneous arrays or directly
+// nested arrays of tables).
+func tomlArrayType(rv reflect.Value) tomlType {
+	if isNil(rv) || !rv.IsValid() || rv.Len() == 0 {
+		return nil
+	}
+	firstType := tomlTypeOfGo(rv.Index(0))
+	if firstType == nil {
+		encPanic(errArrayNilElement)
+	}
+
+	rvlen := rv.Len()
+	for i := 1; i < rvlen; i++ {
+		elem := rv.Index(i)
+		switch elemType := tomlTypeOfGo(elem); {
+		case elemType == nil:
+			encPanic(errArrayNilElement)
+		case !typeEqual(firstType, elemType):
+			encPanic(errArrayMixedElementTypes)
+		}
+	}
+	// If we have a nested array, then we must make sure that the nested
+	// array contains ONLY primitives.
+	// This checks arbitrarily nested arrays.
+	if typeEqual(firstType, tomlArray) || typeEqual(firstType, tomlArrayHash) {
+		nest := tomlArrayType(eindirect(rv.Index(0)))
+		if typeEqual(nest, tomlHash) || typeEqual(nest, tomlArrayHash) {
+			encPanic(errArrayNoTable)
+		}
+	}
+	return firstType
+}
+
+type tagOptions struct {
+	skip      bool // "-"
+	name      string
+	omitempty bool
+	omitzero  bool
+}
+
+func getOptions(tag reflect.StructTag) tagOptions {
+	t := tag.Get("toml")
+	if t == "-" {
+		return tagOptions{skip: true}
+	}
+	var opts tagOptions
+	parts := strings.Split(t, ",")
+	opts.name = parts[0]
+	for _, s := range parts[1:] {
+		switch s {
+		case "omitempty":
+			opts.omitempty = true
+		case "omitzero":
+			opts.omitzero = true
+		}
+	}
+	return opts
+}
+
+func isZero(rv reflect.Value) bool {
+	switch rv.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return rv.Int() == 0
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		return rv.Uint() == 0
+	case reflect.Float32, reflect.Float64:
+		return rv.Float() == 0.0
+	}
+	return false
+}
+
+func isEmpty(rv reflect.Value) bool {
+	switch rv.Kind() {
+	case reflect.Array, reflect.Slice, reflect.Map, reflect.String:
+		return rv.Len() == 0
+	case reflect.Bool:
+		return !rv.Bool()
+	}
+	return false
+}
+
+func (enc *Encoder) newline() {
+	if enc.hasWritten {
+		enc.wf("\n")
+	}
+}
+
+func (enc *Encoder) keyEqElement(key Key, val reflect.Value) {
+	if len(key) == 0 {
+		encPanic(errNoKey)
+	}
+	panicIfInvalidKey(key)
+	enc.wf("%s%s = ", enc.indentStr(key), key.maybeQuoted(len(key)-1))
+	enc.eElement(val)
+	enc.newline()
+}
+
+func (enc *Encoder) wf(format string, v ...interface{}) {
+	if _, err := fmt.Fprintf(enc.w, format, v...); err != nil {
+		encPanic(err)
+	}
+	enc.hasWritten = true
+}
+
+func (enc *Encoder) indentStr(key Key) string {
+	return strings.Repeat(enc.Indent, len(key)-1)
+}
+
+func encPanic(err error) {
+	panic(tomlEncodeError{err})
+}
+
+func eindirect(v reflect.Value) reflect.Value {
+	switch v.Kind() {
+	case reflect.Ptr, reflect.Interface:
+		return eindirect(v.Elem())
+	default:
+		return v
+	}
+}
+
+func isNil(rv reflect.Value) bool {
+	switch rv.Kind() {
+	case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+		return rv.IsNil()
+	default:
+		return false
+	}
+}
+
+func panicIfInvalidKey(key Key) {
+	for _, k := range key {
+		if len(k) == 0 {
+			encPanic(e("Key '%s' is not a valid table name. Key names "+
+				"cannot be empty.", key.maybeQuotedAll()))
+		}
+	}
+}
+
+func isValidKeyName(s string) bool {
+	return len(s) != 0
+}
diff --git a/vendor/github.com/BurntSushi/toml/encoding_types.go b/vendor/github.com/BurntSushi/toml/encoding_types.go
new file mode 100644
index 0000000..d36e1dd
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/encoding_types.go
@@ -0,0 +1,19 @@
+// +build go1.2
+
+package toml
+
+// In order to support Go 1.1, we define our own TextMarshaler and
+// TextUnmarshaler types. For Go 1.2+, we just alias them with the
+// standard library interfaces.
+
+import (
+	"encoding"
+)
+
+// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here
+// so that Go 1.1 can be supported.
+type TextMarshaler encoding.TextMarshaler
+
+// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined
+// here so that Go 1.1 can be supported.
+type TextUnmarshaler encoding.TextUnmarshaler
diff --git a/vendor/github.com/BurntSushi/toml/encoding_types_1.1.go b/vendor/github.com/BurntSushi/toml/encoding_types_1.1.go
new file mode 100644
index 0000000..e8d503d
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/encoding_types_1.1.go
@@ -0,0 +1,18 @@
+// +build !go1.2
+
+package toml
+
+// These interfaces were introduced in Go 1.2, so we add them manually when
+// compiling for Go 1.1.
+
+// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here
+// so that Go 1.1 can be supported.
+type TextMarshaler interface {
+	MarshalText() (text []byte, err error)
+}
+
+// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined
+// here so that Go 1.1 can be supported.
+type TextUnmarshaler interface {
+	UnmarshalText(text []byte) error
+}
diff --git a/vendor/github.com/BurntSushi/toml/lex.go b/vendor/github.com/BurntSushi/toml/lex.go
new file mode 100644
index 0000000..a016dc2
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/lex.go
@@ -0,0 +1,866 @@
+package toml
+
+import (
+	"fmt"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+)
+
+type itemType int
+
+const (
+	itemError itemType = iota
+	itemNIL            // used in the parser to indicate no type
+	itemEOF
+	itemText
+	itemString
+	itemRawString
+	itemMultilineString
+	itemRawMultilineString
+	itemBool
+	itemInteger
+	itemFloat
+	itemDatetime
+	itemArray // the start of an array
+	itemArrayEnd
+	itemTableStart
+	itemTableEnd
+	itemArrayTableStart
+	itemArrayTableEnd
+	itemKeyStart
+	itemCommentStart
+)
+
+const (
+	eof             = 0
+	tableStart      = '['
+	tableEnd        = ']'
+	arrayTableStart = '['
+	arrayTableEnd   = ']'
+	tableSep        = '.'
+	keySep          = '='
+	arrayStart      = '['
+	arrayEnd        = ']'
+	arrayValTerm    = ','
+	commentStart    = '#'
+	stringStart     = '"'
+	stringEnd       = '"'
+	rawStringStart  = '\''
+	rawStringEnd    = '\''
+)
+
+type stateFn func(lx *lexer) stateFn
+
+type lexer struct {
+	input string
+	start int
+	pos   int
+	width int
+	line  int
+	state stateFn
+	items chan item
+
+	// A stack of state functions used to maintain context.
+	// The idea is to reuse parts of the state machine in various places.
+	// For example, values can appear at the top level or within arbitrarily
+	// nested arrays. The last state on the stack is used after a value has
+	// been lexed. Similarly for comments.
+	stack []stateFn
+}
+
+type item struct {
+	typ  itemType
+	val  string
+	line int
+}
+
+func (lx *lexer) nextItem() item {
+	for {
+		select {
+		case item := <-lx.items:
+			return item
+		default:
+			lx.state = lx.state(lx)
+		}
+	}
+}
+
+func lex(input string) *lexer {
+	lx := &lexer{
+		input: input + "\n",
+		state: lexTop,
+		line:  1,
+		items: make(chan item, 10),
+		stack: make([]stateFn, 0, 10),
+	}
+	return lx
+}
+
+func (lx *lexer) push(state stateFn) {
+	lx.stack = append(lx.stack, state)
+}
+
+func (lx *lexer) pop() stateFn {
+	if len(lx.stack) == 0 {
+		return lx.errorf("BUG in lexer: no states to pop.")
+	}
+	last := lx.stack[len(lx.stack)-1]
+	lx.stack = lx.stack[0 : len(lx.stack)-1]
+	return last
+}
+
+func (lx *lexer) current() string {
+	return lx.input[lx.start:lx.pos]
+}
+
+func (lx *lexer) emit(typ itemType) {
+	lx.items <- item{typ, lx.current(), lx.line}
+	lx.start = lx.pos
+}
+
+func (lx *lexer) emitTrim(typ itemType) {
+	lx.items <- item{typ, strings.TrimSpace(lx.current()), lx.line}
+	lx.start = lx.pos
+}
+
+func (lx *lexer) next() (r rune) {
+	if lx.pos >= len(lx.input) {
+		lx.width = 0
+		return eof
+	}
+
+	if lx.input[lx.pos] == '\n' {
+		lx.line++
+	}
+	r, lx.width = utf8.DecodeRuneInString(lx.input[lx.pos:])
+	lx.pos += lx.width
+	return r
+}
+
+// ignore skips over the pending input before this point.
+func (lx *lexer) ignore() {
+	lx.start = lx.pos
+}
+
+// backup steps back one rune. Can be called only once per call of next.
+func (lx *lexer) backup() {
+	lx.pos -= lx.width
+	if lx.pos < len(lx.input) && lx.input[lx.pos] == '\n' {
+		lx.line--
+	}
+}
+
+// accept consumes the next rune if it's equal to `valid`.
+func (lx *lexer) accept(valid rune) bool {
+	if lx.next() == valid {
+		return true
+	}
+	lx.backup()
+	return false
+}
+
+// peek returns but does not consume the next rune in the input.
+func (lx *lexer) peek() rune {
+	r := lx.next()
+	lx.backup()
+	return r
+}
+
+// skip ignores all input that matches the given predicate.
+func (lx *lexer) skip(pred func(rune) bool) {
+	for {
+		r := lx.next()
+		if pred(r) {
+			continue
+		}
+		lx.backup()
+		lx.ignore()
+		return
+	}
+}
+
+// errorf stops all lexing by emitting an error and returning `nil`.
+// Note that any value that is a character is escaped if it's a special
+// character (new lines, tabs, etc.).
+func (lx *lexer) errorf(format string, values ...interface{}) stateFn {
+	lx.items <- item{
+		itemError,
+		fmt.Sprintf(format, values...),
+		lx.line,
+	}
+	return nil
+}
+
+// lexTop consumes elements at the top level of TOML data.
+func lexTop(lx *lexer) stateFn {
+	r := lx.next()
+	if isWhitespace(r) || isNL(r) {
+		return lexSkip(lx, lexTop)
+	}
+
+	switch r {
+	case commentStart:
+		lx.push(lexTop)
+		return lexCommentStart
+	case tableStart:
+		return lexTableStart
+	case eof:
+		if lx.pos > lx.start {
+			return lx.errorf("Unexpected EOF.")
+		}
+		lx.emit(itemEOF)
+		return nil
+	}
+
+	// At this point, the only valid item can be a key, so we back up
+	// and let the key lexer do the rest.
+	lx.backup()
+	lx.push(lexTopEnd)
+	return lexKeyStart
+}
+
+// lexTopEnd is entered whenever a top-level item has been consumed. (A value
+// or a table.) It must see only whitespace, and will turn back to lexTop
+// upon a new line. If it sees EOF, it will quit the lexer successfully.
+func lexTopEnd(lx *lexer) stateFn {
+	r := lx.next()
+	switch {
+	case r == commentStart:
+		// a comment will read to a new line for us.
+		lx.push(lexTop)
+		return lexCommentStart
+	case isWhitespace(r):
+		return lexTopEnd
+	case isNL(r):
+		lx.ignore()
+		return lexTop
+	case r == eof:
+		lx.ignore()
+		return lexTop
+	}
+	return lx.errorf("Expected a top-level item to end with a new line, "+
+		"comment or EOF, but got %q instead.", r)
+}
+
+// lexTable lexes the beginning of a table. Namely, it makes sure that
+// it starts with a character other than '.' and ']'.
+// It assumes that '[' has already been consumed.
+// It also handles the case that this is an item in an array of tables.
+// e.g., '[[name]]'.
+func lexTableStart(lx *lexer) stateFn {
+	if lx.peek() == arrayTableStart {
+		lx.next()
+		lx.emit(itemArrayTableStart)
+		lx.push(lexArrayTableEnd)
+	} else {
+		lx.emit(itemTableStart)
+		lx.push(lexTableEnd)
+	}
+	return lexTableNameStart
+}
+
+func lexTableEnd(lx *lexer) stateFn {
+	lx.emit(itemTableEnd)
+	return lexTopEnd
+}
+
+func lexArrayTableEnd(lx *lexer) stateFn {
+	if r := lx.next(); r != arrayTableEnd {
+		return lx.errorf("Expected end of table array name delimiter %q, "+
+			"but got %q instead.", arrayTableEnd, r)
+	}
+	lx.emit(itemArrayTableEnd)
+	return lexTopEnd
+}
+
+func lexTableNameStart(lx *lexer) stateFn {
+	lx.skip(isWhitespace)
+	switch r := lx.peek(); {
+	case r == tableEnd || r == eof:
+		return lx.errorf("Unexpected end of table name. (Table names cannot " +
+			"be empty.)")
+	case r == tableSep:
+		return lx.errorf("Unexpected table separator. (Table names cannot " +
+			"be empty.)")
+	case r == stringStart || r == rawStringStart:
+		lx.ignore()
+		lx.push(lexTableNameEnd)
+		return lexValue // reuse string lexing
+	default:
+		return lexBareTableName
+	}
+}
+
+// lexBareTableName lexes the name of a table. It assumes that at least one
+// valid character for the table has already been read.
+func lexBareTableName(lx *lexer) stateFn {
+	r := lx.next()
+	if isBareKeyChar(r) {
+		return lexBareTableName
+	}
+	lx.backup()
+	lx.emit(itemText)
+	return lexTableNameEnd
+}
+
+// lexTableNameEnd reads the end of a piece of a table name, optionally
+// consuming whitespace.
+func lexTableNameEnd(lx *lexer) stateFn {
+	lx.skip(isWhitespace)
+	switch r := lx.next(); {
+	case isWhitespace(r):
+		return lexTableNameEnd
+	case r == tableSep:
+		lx.ignore()
+		return lexTableNameStart
+	case r == tableEnd:
+		return lx.pop()
+	default:
+		return lx.errorf("Expected '.' or ']' to end table name, but got %q "+
+			"instead.", r)
+	}
+}
+
+// lexKeyStart consumes a key name up until the first non-whitespace character.
+// lexKeyStart will ignore whitespace.
+func lexKeyStart(lx *lexer) stateFn {
+	r := lx.peek()
+	switch {
+	case r == keySep:
+		return lx.errorf("Unexpected key separator %q.", keySep)
+	case isWhitespace(r) || isNL(r):
+		lx.next()
+		return lexSkip(lx, lexKeyStart)
+	case r == stringStart || r == rawStringStart:
+		lx.ignore()
+		lx.emit(itemKeyStart)
+		lx.push(lexKeyEnd)
+		return lexValue // reuse string lexing
+	default:
+		lx.ignore()
+		lx.emit(itemKeyStart)
+		return lexBareKey
+	}
+}
+
+// lexBareKey consumes the text of a bare key. Assumes that the first character
+// (which is not whitespace) has not yet been consumed.
+func lexBareKey(lx *lexer) stateFn {
+	switch r := lx.next(); {
+	case isBareKeyChar(r):
+		return lexBareKey
+	case isWhitespace(r):
+		lx.backup()
+		lx.emit(itemText)
+		return lexKeyEnd
+	case r == keySep:
+		lx.backup()
+		lx.emit(itemText)
+		return lexKeyEnd
+	default:
+		return lx.errorf("Bare keys cannot contain %q.", r)
+	}
+}
+
+// lexKeyEnd consumes the end of a key and trims whitespace (up to the key
+// separator).
+func lexKeyEnd(lx *lexer) stateFn {
+	switch r := lx.next(); {
+	case r == keySep:
+		return lexSkip(lx, lexValue)
+	case isWhitespace(r):
+		return lexSkip(lx, lexKeyEnd)
+	default:
+		return lx.errorf("Expected key separator %q, but got %q instead.",
+			keySep, r)
+	}
+}
+
+// lexValue starts the consumption of a value anywhere a value is expected.
+// lexValue will ignore whitespace.
+// After a value is lexed, the last state on the next is popped and returned.
+func lexValue(lx *lexer) stateFn {
+	// We allow whitespace to precede a value, but NOT new lines.
+	// In array syntax, the array states are responsible for ignoring new
+	// lines.
+	r := lx.next()
+	switch {
+	case isWhitespace(r):
+		return lexSkip(lx, lexValue)
+	case isDigit(r):
+		lx.backup() // avoid an extra state and use the same as above
+		return lexNumberOrDateStart
+	}
+	switch r {
+	case arrayStart:
+		lx.ignore()
+		lx.emit(itemArray)
+		return lexArrayValue
+	case stringStart:
+		if lx.accept(stringStart) {
+			if lx.accept(stringStart) {
+				lx.ignore() // Ignore """
+				return lexMultilineString
+			}
+			lx.backup()
+		}
+		lx.ignore() // ignore the '"'
+		return lexString
+	case rawStringStart:
+		if lx.accept(rawStringStart) {
+			if lx.accept(rawStringStart) {
+				lx.ignore() // Ignore """
+				return lexMultilineRawString
+			}
+			lx.backup()
+		}
+		lx.ignore() // ignore the "'"
+		return lexRawString
+	case '+', '-':
+		return lexNumberStart
+	case '.': // special error case, be kind to users
+		return lx.errorf("Floats must start with a digit, not '.'.")
+	}
+	if unicode.IsLetter(r) {
+		// Be permissive here; lexBool will give a nice error if the
+		// user wrote something like
+		//   x = foo
+		// (i.e. not 'true' or 'false' but is something else word-like.)
+		lx.backup()
+		return lexBool
+	}
+	return lx.errorf("Expected value but found %q instead.", r)
+}
+
+// lexArrayValue consumes one value in an array. It assumes that '[' or ','
+// have already been consumed. All whitespace and new lines are ignored.
+func lexArrayValue(lx *lexer) stateFn {
+	r := lx.next()
+	switch {
+	case isWhitespace(r) || isNL(r):
+		return lexSkip(lx, lexArrayValue)
+	case r == commentStart:
+		lx.push(lexArrayValue)
+		return lexCommentStart
+	case r == arrayValTerm:
+		return lx.errorf("Unexpected array value terminator %q.",
+			arrayValTerm)
+	case r == arrayEnd:
+		return lexArrayEnd
+	}
+
+	lx.backup()
+	lx.push(lexArrayValueEnd)
+	return lexValue
+}
+
+// lexArrayValueEnd consumes the cruft between values of an array. Namely,
+// it ignores whitespace and expects either a ',' or a ']'.
+func lexArrayValueEnd(lx *lexer) stateFn {
+	r := lx.next()
+	switch {
+	case isWhitespace(r) || isNL(r):
+		return lexSkip(lx, lexArrayValueEnd)
+	case r == commentStart:
+		lx.push(lexArrayValueEnd)
+		return lexCommentStart
+	case r == arrayValTerm:
+		lx.ignore()
+		return lexArrayValue // move on to the next value
+	case r == arrayEnd:
+		return lexArrayEnd
+	}
+	return lx.errorf("Expected an array value terminator %q or an array "+
+		"terminator %q, but got %q instead.", arrayValTerm, arrayEnd, r)
+}
+
+// lexArrayEnd finishes the lexing of an array. It assumes that a ']' has
+// just been consumed.
+func lexArrayEnd(lx *lexer) stateFn {
+	lx.ignore()
+	lx.emit(itemArrayEnd)
+	return lx.pop()
+}
+
+// lexString consumes the inner contents of a string. It assumes that the
+// beginning '"' has already been consumed and ignored.
+func lexString(lx *lexer) stateFn {
+	r := lx.next()
+	switch {
+	case isNL(r):
+		return lx.errorf("Strings cannot contain new lines.")
+	case r == '\\':
+		lx.push(lexString)
+		return lexStringEscape
+	case r == stringEnd:
+		lx.backup()
+		lx.emit(itemString)
+		lx.next()
+		lx.ignore()
+		return lx.pop()
+	}
+	return lexString
+}
+
+// lexMultilineString consumes the inner contents of a string. It assumes that
+// the beginning '"""' has already been consumed and ignored.
+func lexMultilineString(lx *lexer) stateFn {
+	r := lx.next()
+	switch {
+	case r == '\\':
+		return lexMultilineStringEscape
+	case r == stringEnd:
+		if lx.accept(stringEnd) {
+			if lx.accept(stringEnd) {
+				lx.backup()
+				lx.backup()
+				lx.backup()
+				lx.emit(itemMultilineString)
+				lx.next()
+				lx.next()
+				lx.next()
+				lx.ignore()
+				return lx.pop()
+			}
+			lx.backup()
+		}
+	}
+	return lexMultilineString
+}
+
+// lexRawString consumes a raw string. Nothing can be escaped in such a string.
+// It assumes that the beginning "'" has already been consumed and ignored.
+func lexRawString(lx *lexer) stateFn {
+	r := lx.next()
+	switch {
+	case isNL(r):
+		return lx.errorf("Strings cannot contain new lines.")
+	case r == rawStringEnd:
+		lx.backup()
+		lx.emit(itemRawString)
+		lx.next()
+		lx.ignore()
+		return lx.pop()
+	}
+	return lexRawString
+}
+
+// lexMultilineRawString consumes a raw string. Nothing can be escaped in such
+// a string. It assumes that the beginning "'" has already been consumed and
+// ignored.
+func lexMultilineRawString(lx *lexer) stateFn {
+	r := lx.next()
+	switch {
+	case r == rawStringEnd:
+		if lx.accept(rawStringEnd) {
+			if lx.accept(rawStringEnd) {
+				lx.backup()
+				lx.backup()
+				lx.backup()
+				lx.emit(itemRawMultilineString)
+				lx.next()
+				lx.next()
+				lx.next()
+				lx.ignore()
+				return lx.pop()
+			}
+			lx.backup()
+		}
+	}
+	return lexMultilineRawString
+}
+
+// lexMultilineStringEscape consumes an escaped character. It assumes that the
+// preceding '\\' has already been consumed.
+func lexMultilineStringEscape(lx *lexer) stateFn {
+	// Handle the special case first:
+	if isNL(lx.next()) {
+		return lexMultilineString
+	} else {
+		lx.backup()
+		lx.push(lexMultilineString)
+		return lexStringEscape(lx)
+	}
+}
+
+func lexStringEscape(lx *lexer) stateFn {
+	r := lx.next()
+	switch r {
+	case 'b':
+		fallthrough
+	case 't':
+		fallthrough
+	case 'n':
+		fallthrough
+	case 'f':
+		fallthrough
+	case 'r':
+		fallthrough
+	case '"':
+		fallthrough
+	case '\\':
+		return lx.pop()
+	case 'u':
+		return lexShortUnicodeEscape
+	case 'U':
+		return lexLongUnicodeEscape
+	}
+	return lx.errorf("Invalid escape character %q. Only the following "+
+		"escape characters are allowed: "+
+		"\\b, \\t, \\n, \\f, \\r, \\\", \\/, \\\\, "+
+		"\\uXXXX and \\UXXXXXXXX.", r)
+}
+
+func lexShortUnicodeEscape(lx *lexer) stateFn {
+	var r rune
+	for i := 0; i < 4; i++ {
+		r = lx.next()
+		if !isHexadecimal(r) {
+			return lx.errorf("Expected four hexadecimal digits after '\\u', "+
+				"but got '%s' instead.", lx.current())
+		}
+	}
+	return lx.pop()
+}
+
+func lexLongUnicodeEscape(lx *lexer) stateFn {
+	var r rune
+	for i := 0; i < 8; i++ {
+		r = lx.next()
+		if !isHexadecimal(r) {
+			return lx.errorf("Expected eight hexadecimal digits after '\\U', "+
+				"but got '%s' instead.", lx.current())
+		}
+	}
+	return lx.pop()
+}
+
+// lexNumberOrDateStart consumes either an integer, a float, or datetime.
+func lexNumberOrDateStart(lx *lexer) stateFn {
+	r := lx.next()
+	if isDigit(r) {
+		return lexNumberOrDate
+	}
+	switch r {
+	case '_':
+		return lexNumber
+	case 'e', 'E':
+		return lexFloat
+	case '.':
+		return lx.errorf("Floats must start with a digit, not '.'.")
+	}
+	return lx.errorf("Expected a digit but got %q.", r)
+}
+
+// lexNumberOrDate consumes either an integer, float or datetime.
+func lexNumberOrDate(lx *lexer) stateFn {
+	r := lx.next()
+	if isDigit(r) {
+		return lexNumberOrDate
+	}
+	switch r {
+	case '-':
+		return lexDatetime
+	case '_':
+		return lexNumber
+	case '.', 'e', 'E':
+		return lexFloat
+	}
+
+	lx.backup()
+	lx.emit(itemInteger)
+	return lx.pop()
+}
+
+// lexDatetime consumes a Datetime, to a first approximation.
+// The parser validates that it matches one of the accepted formats.
+func lexDatetime(lx *lexer) stateFn {
+	r := lx.next()
+	if isDigit(r) {
+		return lexDatetime
+	}
+	switch r {
+	case '-', 'T', ':', '.', 'Z':
+		return lexDatetime
+	}
+
+	lx.backup()
+	lx.emit(itemDatetime)
+	return lx.pop()
+}
+
+// lexNumberStart consumes either an integer or a float. It assumes that a sign
+// has already been read, but that *no* digits have been consumed.
+// lexNumberStart will move to the appropriate integer or float states.
+func lexNumberStart(lx *lexer) stateFn {
+	// We MUST see a digit. Even floats have to start with a digit.
+	r := lx.next()
+	if !isDigit(r) {
+		if r == '.' {
+			return lx.errorf("Floats must start with a digit, not '.'.")
+		} else {
+			return lx.errorf("Expected a digit but got %q.", r)
+		}
+	}
+	return lexNumber
+}
+
+// lexNumber consumes an integer or a float after seeing the first digit.
+func lexNumber(lx *lexer) stateFn {
+	r := lx.next()
+	if isDigit(r) {
+		return lexNumber
+	}
+	switch r {
+	case '_':
+		return lexNumber
+	case '.', 'e', 'E':
+		return lexFloat
+	}
+
+	lx.backup()
+	lx.emit(itemInteger)
+	return lx.pop()
+}
+
+// lexFloat consumes the elements of a float. It allows any sequence of
+// float-like characters, so floats emitted by the lexer are only a first
+// approximation and must be validated by the parser.
+func lexFloat(lx *lexer) stateFn {
+	r := lx.next()
+	if isDigit(r) {
+		return lexFloat
+	}
+	switch r {
+	case '_', '.', '-', '+', 'e', 'E':
+		return lexFloat
+	}
+
+	lx.backup()
+	lx.emit(itemFloat)
+	return lx.pop()
+}
+
+// lexBool consumes a bool string: 'true' or 'false.
+func lexBool(lx *lexer) stateFn {
+	var rs []rune
+	for {
+		r := lx.next()
+		if r == eof || isWhitespace(r) || isNL(r) {
+			lx.backup()
+			break
+		}
+		rs = append(rs, r)
+	}
+	s := string(rs)
+	switch s {
+	case "true", "false":
+		lx.emit(itemBool)
+		return lx.pop()
+	}
+	return lx.errorf("Expected value but found %q instead.", s)
+}
+
+// lexCommentStart begins the lexing of a comment. It will emit
+// itemCommentStart and consume no characters, passing control to lexComment.
+func lexCommentStart(lx *lexer) stateFn {
+	lx.ignore()
+	lx.emit(itemCommentStart)
+	return lexComment
+}
+
+// lexComment lexes an entire comment. It assumes that '#' has been consumed.
+// It will consume *up to* the first new line character, and pass control
+// back to the last state on the stack.
+func lexComment(lx *lexer) stateFn {
+	r := lx.peek()
+	if isNL(r) || r == eof {
+		lx.emit(itemText)
+		return lx.pop()
+	}
+	lx.next()
+	return lexComment
+}
+
+// lexSkip ignores all slurped input and moves on to the next state.
+func lexSkip(lx *lexer, nextState stateFn) stateFn {
+	return func(lx *lexer) stateFn {
+		lx.ignore()
+		return nextState
+	}
+}
+
+// isWhitespace returns true if `r` is a whitespace character according
+// to the spec.
+func isWhitespace(r rune) bool {
+	return r == '\t' || r == ' '
+}
+
+func isNL(r rune) bool {
+	return r == '\n' || r == '\r'
+}
+
+func isDigit(r rune) bool {
+	return r >= '0' && r <= '9'
+}
+
+func isHexadecimal(r rune) bool {
+	return (r >= '0' && r <= '9') ||
+		(r >= 'a' && r <= 'f') ||
+		(r >= 'A' && r <= 'F')
+}
+
+func isBareKeyChar(r rune) bool {
+	return (r >= 'A' && r <= 'Z') ||
+		(r >= 'a' && r <= 'z') ||
+		(r >= '0' && r <= '9') ||
+		r == '_' ||
+		r == '-'
+}
+
+func (itype itemType) String() string {
+	switch itype {
+	case itemError:
+		return "Error"
+	case itemNIL:
+		return "NIL"
+	case itemEOF:
+		return "EOF"
+	case itemText:
+		return "Text"
+	case itemString:
+		return "String"
+	case itemRawString:
+		return "String"
+	case itemMultilineString:
+		return "String"
+	case itemRawMultilineString:
+		return "String"
+	case itemBool:
+		return "Bool"
+	case itemInteger:
+		return "Integer"
+	case itemFloat:
+		return "Float"
+	case itemDatetime:
+		return "DateTime"
+	case itemTableStart:
+		return "TableStart"
+	case itemTableEnd:
+		return "TableEnd"
+	case itemKeyStart:
+		return "KeyStart"
+	case itemArray:
+		return "Array"
+	case itemArrayEnd:
+		return "ArrayEnd"
+	case itemCommentStart:
+		return "CommentStart"
+	}
+	panic(fmt.Sprintf("BUG: Unknown type '%d'.", int(itype)))
+}
+
+func (item item) String() string {
+	return fmt.Sprintf("(%s, %s)", item.typ.String(), item.val)
+}
diff --git a/vendor/github.com/BurntSushi/toml/parse.go b/vendor/github.com/BurntSushi/toml/parse.go
new file mode 100644
index 0000000..a562555
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/parse.go
@@ -0,0 +1,557 @@
+package toml
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+	"unicode"
+	"unicode/utf8"
+)
+
+type parser struct {
+	mapping map[string]interface{}
+	types   map[string]tomlType
+	lx      *lexer
+
+	// A list of keys in the order that they appear in the TOML data.
+	ordered []Key
+
+	// the full key for the current hash in scope
+	context Key
+
+	// the base key name for everything except hashes
+	currentKey string
+
+	// rough approximation of line number
+	approxLine int
+
+	// A map of 'key.group.names' to whether they were created implicitly.
+	implicits map[string]bool
+}
+
+type parseError string
+
+func (pe parseError) Error() string {
+	return string(pe)
+}
+
+func parse(data string) (p *parser, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			var ok bool
+			if err, ok = r.(parseError); ok {
+				return
+			}
+			panic(r)
+		}
+	}()
+
+	p = &parser{
+		mapping:   make(map[string]interface{}),
+		types:     make(map[string]tomlType),
+		lx:        lex(data),
+		ordered:   make([]Key, 0),
+		implicits: make(map[string]bool),
+	}
+	for {
+		item := p.next()
+		if item.typ == itemEOF {
+			break
+		}
+		p.topLevel(item)
+	}
+
+	return p, nil
+}
+
+func (p *parser) panicf(format string, v ...interface{}) {
+	msg := fmt.Sprintf("Near line %d (last key parsed '%s'): %s",
+		p.approxLine, p.current(), fmt.Sprintf(format, v...))
+	panic(parseError(msg))
+}
+
+func (p *parser) next() item {
+	it := p.lx.nextItem()
+	if it.typ == itemError {
+		p.panicf("%s", it.val)
+	}
+	return it
+}
+
+func (p *parser) bug(format string, v ...interface{}) {
+	panic(fmt.Sprintf("BUG: "+format+"\n\n", v...))
+}
+
+func (p *parser) expect(typ itemType) item {
+	it := p.next()
+	p.assertEqual(typ, it.typ)
+	return it
+}
+
+func (p *parser) assertEqual(expected, got itemType) {
+	if expected != got {
+		p.bug("Expected '%s' but got '%s'.", expected, got)
+	}
+}
+
+func (p *parser) topLevel(item item) {
+	switch item.typ {
+	case itemCommentStart:
+		p.approxLine = item.line
+		p.expect(itemText)
+	case itemTableStart:
+		kg := p.next()
+		p.approxLine = kg.line
+
+		var key Key
+		for ; kg.typ != itemTableEnd && kg.typ != itemEOF; kg = p.next() {
+			key = append(key, p.keyString(kg))
+		}
+		p.assertEqual(itemTableEnd, kg.typ)
+
+		p.establishContext(key, false)
+		p.setType("", tomlHash)
+		p.ordered = append(p.ordered, key)
+	case itemArrayTableStart:
+		kg := p.next()
+		p.approxLine = kg.line
+
+		var key Key
+		for ; kg.typ != itemArrayTableEnd && kg.typ != itemEOF; kg = p.next() {
+			key = append(key, p.keyString(kg))
+		}
+		p.assertEqual(itemArrayTableEnd, kg.typ)
+
+		p.establishContext(key, true)
+		p.setType("", tomlArrayHash)
+		p.ordered = append(p.ordered, key)
+	case itemKeyStart:
+		kname := p.next()
+		p.approxLine = kname.line
+		p.currentKey = p.keyString(kname)
+
+		val, typ := p.value(p.next())
+		p.setValue(p.currentKey, val)
+		p.setType(p.currentKey, typ)
+		p.ordered = append(p.ordered, p.context.add(p.currentKey))
+		p.currentKey = ""
+	default:
+		p.bug("Unexpected type at top level: %s", item.typ)
+	}
+}
+
+// Gets a string for a key (or part of a key in a table name).
+func (p *parser) keyString(it item) string {
+	switch it.typ {
+	case itemText:
+		return it.val
+	case itemString, itemMultilineString,
+		itemRawString, itemRawMultilineString:
+		s, _ := p.value(it)
+		return s.(string)
+	default:
+		p.bug("Unexpected key type: %s", it.typ)
+		panic("unreachable")
+	}
+}
+
+// value translates an expected value from the lexer into a Go value wrapped
+// as an empty interface.
+func (p *parser) value(it item) (interface{}, tomlType) {
+	switch it.typ {
+	case itemString:
+		return p.replaceEscapes(it.val), p.typeOfPrimitive(it)
+	case itemMultilineString:
+		trimmed := stripFirstNewline(stripEscapedWhitespace(it.val))
+		return p.replaceEscapes(trimmed), p.typeOfPrimitive(it)
+	case itemRawString:
+		return it.val, p.typeOfPrimitive(it)
+	case itemRawMultilineString:
+		return stripFirstNewline(it.val), p.typeOfPrimitive(it)
+	case itemBool:
+		switch it.val {
+		case "true":
+			return true, p.typeOfPrimitive(it)
+		case "false":
+			return false, p.typeOfPrimitive(it)
+		}
+		p.bug("Expected boolean value, but got '%s'.", it.val)
+	case itemInteger:
+		if !numUnderscoresOK(it.val) {
+			p.panicf("Invalid integer %q: underscores must be surrounded by digits",
+				it.val)
+		}
+		val := strings.Replace(it.val, "_", "", -1)
+		num, err := strconv.ParseInt(val, 10, 64)
+		if err != nil {
+			// Distinguish integer values. Normally, it'd be a bug if the lexer
+			// provides an invalid integer, but it's possible that the number is
+			// out of range of valid values (which the lexer cannot determine).
+			// So mark the former as a bug but the latter as a legitimate user
+			// error.
+			if e, ok := err.(*strconv.NumError); ok &&
+				e.Err == strconv.ErrRange {
+
+				p.panicf("Integer '%s' is out of the range of 64-bit "+
+					"signed integers.", it.val)
+			} else {
+				p.bug("Expected integer value, but got '%s'.", it.val)
+			}
+		}
+		return num, p.typeOfPrimitive(it)
+	case itemFloat:
+		parts := strings.FieldsFunc(it.val, func(r rune) bool {
+			switch r {
+			case '.', 'e', 'E':
+				return true
+			}
+			return false
+		})
+		for _, part := range parts {
+			if !numUnderscoresOK(part) {
+				p.panicf("Invalid float %q: underscores must be "+
+					"surrounded by digits", it.val)
+			}
+		}
+		if !numPeriodsOK(it.val) {
+			// As a special case, numbers like '123.' or '1.e2',
+			// which are valid as far as Go/strconv are concerned,
+			// must be rejected because TOML says that a fractional
+			// part consists of '.' followed by 1+ digits.
+			p.panicf("Invalid float %q: '.' must be followed "+
+				"by one or more digits", it.val)
+		}
+		val := strings.Replace(it.val, "_", "", -1)
+		num, err := strconv.ParseFloat(val, 64)
+		if err != nil {
+			if e, ok := err.(*strconv.NumError); ok &&
+				e.Err == strconv.ErrRange {
+
+				p.panicf("Float '%s' is out of the range of 64-bit "+
+					"IEEE-754 floating-point numbers.", it.val)
+			} else {
+				p.panicf("Invalid float value: %q", it.val)
+			}
+		}
+		return num, p.typeOfPrimitive(it)
+	case itemDatetime:
+		var t time.Time
+		var ok bool
+		var err error
+		for _, format := range []string{
+			"2006-01-02T15:04:05Z07:00",
+			"2006-01-02T15:04:05",
+			"2006-01-02",
+		} {
+			t, err = time.ParseInLocation(format, it.val, time.Local)
+			if err == nil {
+				ok = true
+				break
+			}
+		}
+		if !ok {
+			p.panicf("Invalid TOML Datetime: %q.", it.val)
+		}
+		return t, p.typeOfPrimitive(it)
+	case itemArray:
+		array := make([]interface{}, 0)
+		types := make([]tomlType, 0)
+
+		for it = p.next(); it.typ != itemArrayEnd; it = p.next() {
+			if it.typ == itemCommentStart {
+				p.expect(itemText)
+				continue
+			}
+
+			val, typ := p.value(it)
+			array = append(array, val)
+			types = append(types, typ)
+		}
+		return array, p.typeOfArray(types)
+	}
+	p.bug("Unexpected value type: %s", it.typ)
+	panic("unreachable")
+}
+
+// numUnderscoresOK checks whether each underscore in s is surrounded by
+// characters that are not underscores.
+func numUnderscoresOK(s string) bool {
+	accept := false
+	for _, r := range s {
+		if r == '_' {
+			if !accept {
+				return false
+			}
+			accept = false
+			continue
+		}
+		accept = true
+	}
+	return accept
+}
+
+// numPeriodsOK checks whether every period in s is followed by a digit.
+func numPeriodsOK(s string) bool {
+	period := false
+	for _, r := range s {
+		if period && !isDigit(r) {
+			return false
+		}
+		period = r == '.'
+	}
+	return !period
+}
+
+// establishContext sets the current context of the parser,
+// where the context is either a hash or an array of hashes. Which one is
+// set depends on the value of the `array` parameter.
+//
+// Establishing the context also makes sure that the key isn't a duplicate, and
+// will create implicit hashes automatically.
+func (p *parser) establishContext(key Key, array bool) {
+	var ok bool
+
+	// Always start at the top level and drill down for our context.
+	hashContext := p.mapping
+	keyContext := make(Key, 0)
+
+	// We only need implicit hashes for key[0:-1]
+	for _, k := range key[0 : len(key)-1] {
+		_, ok = hashContext[k]
+		keyContext = append(keyContext, k)
+
+		// No key? Make an implicit hash and move on.
+		if !ok {
+			p.addImplicit(keyContext)
+			hashContext[k] = make(map[string]interface{})
+		}
+
+		// If the hash context is actually an array of tables, then set
+		// the hash context to the last element in that array.
+		//
+		// Otherwise, it better be a table, since this MUST be a key group (by
+		// virtue of it not being the last element in a key).
+		switch t := hashContext[k].(type) {
+		case []map[string]interface{}:
+			hashContext = t[len(t)-1]
+		case map[string]interface{}:
+			hashContext = t
+		default:
+			p.panicf("Key '%s' was already created as a hash.", keyContext)
+		}
+	}
+
+	p.context = keyContext
+	if array {
+		// If this is the first element for this array, then allocate a new
+		// list of tables for it.
+		k := key[len(key)-1]
+		if _, ok := hashContext[k]; !ok {
+			hashContext[k] = make([]map[string]interface{}, 0, 5)
+		}
+
+		// Add a new table. But make sure the key hasn't already been used
+		// for something else.
+		if hash, ok := hashContext[k].([]map[string]interface{}); ok {
+			hashContext[k] = append(hash, make(map[string]interface{}))
+		} else {
+			p.panicf("Key '%s' was already created and cannot be used as "+
+				"an array.", keyContext)
+		}
+	} else {
+		p.setValue(key[len(key)-1], make(map[string]interface{}))
+	}
+	p.context = append(p.context, key[len(key)-1])
+}
+
+// setValue sets the given key to the given value in the current context.
+// It will make sure that the key hasn't already been defined, account for
+// implicit key groups.
+func (p *parser) setValue(key string, value interface{}) {
+	var tmpHash interface{}
+	var ok bool
+
+	hash := p.mapping
+	keyContext := make(Key, 0)
+	for _, k := range p.context {
+		keyContext = append(keyContext, k)
+		if tmpHash, ok = hash[k]; !ok {
+			p.bug("Context for key '%s' has not been established.", keyContext)
+		}
+		switch t := tmpHash.(type) {
+		case []map[string]interface{}:
+			// The context is a table of hashes. Pick the most recent table
+			// defined as the current hash.
+			hash = t[len(t)-1]
+		case map[string]interface{}:
+			hash = t
+		default:
+			p.bug("Expected hash to have type 'map[string]interface{}', but "+
+				"it has '%T' instead.", tmpHash)
+		}
+	}
+	keyContext = append(keyContext, key)
+
+	if _, ok := hash[key]; ok {
+		// Typically, if the given key has already been set, then we have
+		// to raise an error since duplicate keys are disallowed. However,
+		// it's possible that a key was previously defined implicitly. In this
+		// case, it is allowed to be redefined concretely. (See the
+		// `tests/valid/implicit-and-explicit-after.toml` test in `toml-test`.)
+		//
+		// But we have to make sure to stop marking it as an implicit. (So that
+		// another redefinition provokes an error.)
+		//
+		// Note that since it has already been defined (as a hash), we don't
+		// want to overwrite it. So our business is done.
+		if p.isImplicit(keyContext) {
+			p.removeImplicit(keyContext)
+			return
+		}
+
+		// Otherwise, we have a concrete key trying to override a previous
+		// key, which is *always* wrong.
+		p.panicf("Key '%s' has already been defined.", keyContext)
+	}
+	hash[key] = value
+}
+
+// setType sets the type of a particular value at a given key.
+// It should be called immediately AFTER setValue.
+//
+// Note that if `key` is empty, then the type given will be applied to the
+// current context (which is either a table or an array of tables).
+func (p *parser) setType(key string, typ tomlType) {
+	keyContext := make(Key, 0, len(p.context)+1)
+	for _, k := range p.context {
+		keyContext = append(keyContext, k)
+	}
+	if len(key) > 0 { // allow type setting for hashes
+		keyContext = append(keyContext, key)
+	}
+	p.types[keyContext.String()] = typ
+}
+
+// addImplicit sets the given Key as having been created implicitly.
+func (p *parser) addImplicit(key Key) {
+	p.implicits[key.String()] = true
+}
+
+// removeImplicit stops tagging the given key as having been implicitly
+// created.
+func (p *parser) removeImplicit(key Key) {
+	p.implicits[key.String()] = false
+}
+
+// isImplicit returns true if the key group pointed to by the key was created
+// implicitly.
+func (p *parser) isImplicit(key Key) bool {
+	return p.implicits[key.String()]
+}
+
+// current returns the full key name of the current context.
+func (p *parser) current() string {
+	if len(p.currentKey) == 0 {
+		return p.context.String()
+	}
+	if len(p.context) == 0 {
+		return p.currentKey
+	}
+	return fmt.Sprintf("%s.%s", p.context, p.currentKey)
+}
+
+func stripFirstNewline(s string) string {
+	if len(s) == 0 || s[0] != '\n' {
+		return s
+	}
+	return s[1:]
+}
+
+func stripEscapedWhitespace(s string) string {
+	esc := strings.Split(s, "\\\n")
+	if len(esc) > 1 {
+		for i := 1; i < len(esc); i++ {
+			esc[i] = strings.TrimLeftFunc(esc[i], unicode.IsSpace)
+		}
+	}
+	return strings.Join(esc, "")
+}
+
+func (p *parser) replaceEscapes(str string) string {
+	var replaced []rune
+	s := []byte(str)
+	r := 0
+	for r < len(s) {
+		if s[r] != '\\' {
+			c, size := utf8.DecodeRune(s[r:])
+			r += size
+			replaced = append(replaced, c)
+			continue
+		}
+		r += 1
+		if r >= len(s) {
+			p.bug("Escape sequence at end of string.")
+			return ""
+		}
+		switch s[r] {
+		default:
+			p.bug("Expected valid escape code after \\, but got %q.", s[r])
+			return ""
+		case 'b':
+			replaced = append(replaced, rune(0x0008))
+			r += 1
+		case 't':
+			replaced = append(replaced, rune(0x0009))
+			r += 1
+		case 'n':
+			replaced = append(replaced, rune(0x000A))
+			r += 1
+		case 'f':
+			replaced = append(replaced, rune(0x000C))
+			r += 1
+		case 'r':
+			replaced = append(replaced, rune(0x000D))
+			r += 1
+		case '"':
+			replaced = append(replaced, rune(0x0022))
+			r += 1
+		case '\\':
+			replaced = append(replaced, rune(0x005C))
+			r += 1
+		case 'u':
+			// At this point, we know we have a Unicode escape of the form
+			// `uXXXX` at [r, r+5). (Because the lexer guarantees this
+			// for us.)
+			escaped := p.asciiEscapeToUnicode(s[r+1 : r+5])
+			replaced = append(replaced, escaped)
+			r += 5
+		case 'U':
+			// At this point, we know we have a Unicode escape of the form
+			// `uXXXX` at [r, r+9). (Because the lexer guarantees this
+			// for us.)
+			escaped := p.asciiEscapeToUnicode(s[r+1 : r+9])
+			replaced = append(replaced, escaped)
+			r += 9
+		}
+	}
+	return string(replaced)
+}
+
+func (p *parser) asciiEscapeToUnicode(bs []byte) rune {
+	s := string(bs)
+	hex, err := strconv.ParseUint(strings.ToLower(s), 16, 32)
+	if err != nil {
+		p.bug("Could not parse '%s' as a hexadecimal number, but the "+
+			"lexer claims it's OK: %s", s, err)
+	}
+	if !utf8.ValidRune(rune(hex)) {
+		p.panicf("Escaped character '\\u%s' is not valid UTF-8.", s)
+	}
+	return rune(hex)
+}
+
+func isStringType(ty itemType) bool {
+	return ty == itemString || ty == itemMultilineString ||
+		ty == itemRawString || ty == itemRawMultilineString
+}
diff --git a/vendor/github.com/BurntSushi/toml/session.vim b/vendor/github.com/BurntSushi/toml/session.vim
new file mode 100644
index 0000000..562164b
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/session.vim
@@ -0,0 +1 @@
+au BufWritePost *.go silent!make tags > /dev/null 2>&1
diff --git a/vendor/github.com/BurntSushi/toml/type_check.go b/vendor/github.com/BurntSushi/toml/type_check.go
new file mode 100644
index 0000000..c73f8af
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/type_check.go
@@ -0,0 +1,91 @@
+package toml
+
+// tomlType represents any Go type that corresponds to a TOML type.
+// While the first draft of the TOML spec has a simplistic type system that
+// probably doesn't need this level of sophistication, we seem to be militating
+// toward adding real composite types.
+type tomlType interface {
+	typeString() string
+}
+
+// typeEqual accepts any two types and returns true if they are equal.
+func typeEqual(t1, t2 tomlType) bool {
+	if t1 == nil || t2 == nil {
+		return false
+	}
+	return t1.typeString() == t2.typeString()
+}
+
+func typeIsHash(t tomlType) bool {
+	return typeEqual(t, tomlHash) || typeEqual(t, tomlArrayHash)
+}
+
+type tomlBaseType string
+
+func (btype tomlBaseType) typeString() string {
+	return string(btype)
+}
+
+func (btype tomlBaseType) String() string {
+	return btype.typeString()
+}
+
+var (
+	tomlInteger   tomlBaseType = "Integer"
+	tomlFloat     tomlBaseType = "Float"
+	tomlDatetime  tomlBaseType = "Datetime"
+	tomlString    tomlBaseType = "String"
+	tomlBool      tomlBaseType = "Bool"
+	tomlArray     tomlBaseType = "Array"
+	tomlHash      tomlBaseType = "Hash"
+	tomlArrayHash tomlBaseType = "ArrayHash"
+)
+
+// typeOfPrimitive returns a tomlType of any primitive value in TOML.
+// Primitive values are: Integer, Float, Datetime, String and Bool.
+//
+// Passing a lexer item other than the following will cause a BUG message
+// to occur: itemString, itemBool, itemInteger, itemFloat, itemDatetime.
+func (p *parser) typeOfPrimitive(lexItem item) tomlType {
+	switch lexItem.typ {
+	case itemInteger:
+		return tomlInteger
+	case itemFloat:
+		return tomlFloat
+	case itemDatetime:
+		return tomlDatetime
+	case itemString:
+		return tomlString
+	case itemMultilineString:
+		return tomlString
+	case itemRawString:
+		return tomlString
+	case itemRawMultilineString:
+		return tomlString
+	case itemBool:
+		return tomlBool
+	}
+	p.bug("Cannot infer primitive type of lex item '%s'.", lexItem)
+	panic("unreachable")
+}
+
+// typeOfArray returns a tomlType for an array given a list of types of its
+// values.
+//
+// In the current spec, if an array is homogeneous, then its type is always
+// "Array". If the array is not homogeneous, an error is generated.
+func (p *parser) typeOfArray(types []tomlType) tomlType {
+	// Empty arrays are cool.
+	if len(types) == 0 {
+		return tomlArray
+	}
+
+	theType := types[0]
+	for _, t := range types[1:] {
+		if !typeEqual(theType, t) {
+			p.panicf("Array contains values of type '%s' and '%s', but "+
+				"arrays must be homogeneous.", theType, t)
+		}
+	}
+	return tomlArray
+}
diff --git a/vendor/github.com/BurntSushi/toml/type_fields.go b/vendor/github.com/BurntSushi/toml/type_fields.go
new file mode 100644
index 0000000..608997c
--- /dev/null
+++ b/vendor/github.com/BurntSushi/toml/type_fields.go
@@ -0,0 +1,242 @@
+package toml
+
+// Struct field handling is adapted from code in encoding/json:
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the Go distribution.
+
+import (
+	"reflect"
+	"sort"
+	"sync"
+)
+
+// A field represents a single field found in a struct.
+type field struct {
+	name  string       // the name of the field (`toml` tag included)
+	tag   bool         // whether field has a `toml` tag
+	index []int        // represents the depth of an anonymous field
+	typ   reflect.Type // the type of the field
+}
+
+// byName sorts field by name, breaking ties with depth,
+// then breaking ties with "name came from toml tag", then
+// breaking ties with index sequence.
+type byName []field
+
+func (x byName) Len() int { return len(x) }
+
+func (x byName) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
+
+func (x byName) Less(i, j int) bool {
+	if x[i].name != x[j].name {
+		return x[i].name < x[j].name
+	}
+	if len(x[i].index) != len(x[j].index) {
+		return len(x[i].index) < len(x[j].index)
+	}
+	if x[i].tag != x[j].tag {
+		return x[i].tag
+	}
+	return byIndex(x).Less(i, j)
+}
+
+// byIndex sorts field by index sequence.
+type byIndex []field
+
+func (x byIndex) Len() int { return len(x) }
+
+func (x byIndex) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
+
+func (x byIndex) Less(i, j int) bool {
+	for k, xik := range x[i].index {
+		if k >= len(x[j].index) {
+			return false
+		}
+		if xik != x[j].index[k] {
+			return xik < x[j].index[k]
+		}
+	}
+	return len(x[i].index) < len(x[j].index)
+}
+
+// typeFields returns a list of fields that TOML should recognize for the given
+// type. The algorithm is breadth-first search over the set of structs to
+// include - the top struct and then any reachable anonymous structs.
+func typeFields(t reflect.Type) []field {
+	// Anonymous fields to explore at the current level and the next.
+	current := []field{}
+	next := []field{{typ: t}}
+
+	// Count of queued names for current level and the next.
+	count := map[reflect.Type]int{}
+	nextCount := map[reflect.Type]int{}
+
+	// Types already visited at an earlier level.
+	visited := map[reflect.Type]bool{}
+
+	// Fields found.
+	var fields []field
+
+	for len(next) > 0 {
+		current, next = next, current[:0]
+		count, nextCount = nextCount, map[reflect.Type]int{}
+
+		for _, f := range current {
+			if visited[f.typ] {
+				continue
+			}
+			visited[f.typ] = true
+
+			// Scan f.typ for fields to include.
+			for i := 0; i < f.typ.NumField(); i++ {
+				sf := f.typ.Field(i)
+				if sf.PkgPath != "" && !sf.Anonymous { // unexported
+					continue
+				}
+				opts := getOptions(sf.Tag)
+				if opts.skip {
+					continue
+				}
+				index := make([]int, len(f.index)+1)
+				copy(index, f.index)
+				index[len(f.index)] = i
+
+				ft := sf.Type
+				if ft.Name() == "" && ft.Kind() == reflect.Ptr {
+					// Follow pointer.
+					ft = ft.Elem()
+				}
+
+				// Record found field and index sequence.
+				if opts.name != "" || !sf.Anonymous || ft.Kind() != reflect.Struct {
+					tagged := opts.name != ""
+					name := opts.name
+					if name == "" {
+						name = sf.Name
+					}
+					fields = append(fields, field{name, tagged, index, ft})
+					if count[f.typ] > 1 {
+						// If there were multiple instances, add a second,
+						// so that the annihilation code will see a duplicate.
+						// It only cares about the distinction between 1 or 2,
+						// so don't bother generating any more copies.
+						fields = append(fields, fields[len(fields)-1])
+					}
+					continue
+				}
+
+				// Record new anonymous struct to explore in next round.
+				nextCount[ft]++
+				if nextCount[ft] == 1 {
+					f := field{name: ft.Name(), index: index, typ: ft}
+					next = append(next, f)
+				}
+			}
+		}
+	}
+
+	sort.Sort(byName(fields))
+
+	// Delete all fields that are hidden by the Go rules for embedded fields,
+	// except that fields with TOML tags are promoted.
+
+	// The fields are sorted in primary order of name, secondary order
+	// of field index length. Loop over names; for each name, delete
+	// hidden fields by choosing the one dominant field that survives.
+	out := fields[:0]
+	for advance, i := 0, 0; i < len(fields); i += advance {
+		// One iteration per name.
+		// Find the sequence of fields with the name of this first field.
+		fi := fields[i]
+		name := fi.name
+		for advance = 1; i+advance < len(fields); advance++ {
+			fj := fields[i+advance]
+			if fj.name != name {
+				break
+			}
+		}
+		if advance == 1 { // Only one field with this name
+			out = append(out, fi)
+			continue
+		}
+		dominant, ok := dominantField(fields[i : i+advance])
+		if ok {
+			out = append(out, dominant)
+		}
+	}
+
+	fields = out
+	sort.Sort(byIndex(fields))
+
+	return fields
+}
+
+// dominantField looks through the fields, all of which are known to
+// have the same name, to find the single field that dominates the
+// others using Go's embedding rules, modified by the presence of
+// TOML tags. If there are multiple top-level fields, the boolean
+// will be false: This condition is an error in Go and we skip all
+// the fields.
+func dominantField(fields []field) (field, bool) {
+	// The fields are sorted in increasing index-length order. The winner
+	// must therefore be one with the shortest index length. Drop all
+	// longer entries, which is easy: just truncate the slice.
+	length := len(fields[0].index)
+	tagged := -1 // Index of first tagged field.
+	for i, f := range fields {
+		if len(f.index) > length {
+			fields = fields[:i]
+			break
+		}
+		if f.tag {
+			if tagged >= 0 {
+				// Multiple tagged fields at the same level: conflict.
+				// Return no field.
+				return field{}, false
+			}
+			tagged = i
+		}
+	}
+	if tagged >= 0 {
+		return fields[tagged], true
+	}
+	// All remaining fields have the same length. If there's more than one,
+	// we have a conflict (two fields named "X" at the same level) and we
+	// return no field.
+	if len(fields) > 1 {
+		return field{}, false
+	}
+	return fields[0], true
+}
+
+var fieldCache struct {
+	sync.RWMutex
+	m map[reflect.Type][]field
+}
+
+// cachedTypeFields is like typeFields but uses a cache to avoid repeated work.
+func cachedTypeFields(t reflect.Type) []field {
+	fieldCache.RLock()
+	f := fieldCache.m[t]
+	fieldCache.RUnlock()
+	if f != nil {
+		return f
+	}
+
+	// Compute fields without lock.
+	// Might duplicate effort but won't hold other computations back.
+	f = typeFields(t)
+	if f == nil {
+		f = []field{}
+	}
+
+	fieldCache.Lock()
+	if fieldCache.m == nil {
+		fieldCache.m = map[reflect.Type][]field{}
+	}
+	fieldCache.m[t] = f
+	fieldCache.Unlock()
+	return f
+}
diff --git a/vendor/github.com/davecgh/go-spew/LICENSE b/vendor/github.com/davecgh/go-spew/LICENSE
new file mode 100644
index 0000000..2a7cfd2
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/LICENSE
@@ -0,0 +1,13 @@
+Copyright (c) 2012-2013 Dave Collins <dave@davec.name>
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/vendor/github.com/davecgh/go-spew/spew/bypass.go b/vendor/github.com/davecgh/go-spew/spew/bypass.go
new file mode 100644
index 0000000..565bf58
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/bypass.go
@@ -0,0 +1,151 @@
+// Copyright (c) 2015 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is not running on Google App Engine and "-tags disableunsafe"
+// is not added to the go build command line.
+// +build !appengine,!disableunsafe
+
+package spew
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = false
+
+	// ptrSize is the size of a pointer on the current arch.
+	ptrSize = unsafe.Sizeof((*byte)(nil))
+)
+
+var (
+	// offsetPtr, offsetScalar, and offsetFlag are the offsets for the
+	// internal reflect.Value fields.  These values are valid before golang
+	// commit ecccf07e7f9d which changed the format.  The are also valid
+	// after commit 82f48826c6c7 which changed the format again to mirror
+	// the original format.  Code in the init function updates these offsets
+	// as necessary.
+	offsetPtr    = uintptr(ptrSize)
+	offsetScalar = uintptr(0)
+	offsetFlag   = uintptr(ptrSize * 2)
+
+	// flagKindWidth and flagKindShift indicate various bits that the
+	// reflect package uses internally to track kind information.
+	//
+	// flagRO indicates whether or not the value field of a reflect.Value is
+	// read-only.
+	//
+	// flagIndir indicates whether the value field of a reflect.Value is
+	// the actual data or a pointer to the data.
+	//
+	// These values are valid before golang commit 90a7c3c86944 which
+	// changed their positions.  Code in the init function updates these
+	// flags as necessary.
+	flagKindWidth = uintptr(5)
+	flagKindShift = uintptr(flagKindWidth - 1)
+	flagRO        = uintptr(1 << 0)
+	flagIndir     = uintptr(1 << 1)
+)
+
+func init() {
+	// Older versions of reflect.Value stored small integers directly in the
+	// ptr field (which is named val in the older versions).  Versions
+	// between commits ecccf07e7f9d and 82f48826c6c7 added a new field named
+	// scalar for this purpose which unfortunately came before the flag
+	// field, so the offset of the flag field is different for those
+	// versions.
+	//
+	// This code constructs a new reflect.Value from a known small integer
+	// and checks if the size of the reflect.Value struct indicates it has
+	// the scalar field. When it does, the offsets are updated accordingly.
+	vv := reflect.ValueOf(0xf00)
+	if unsafe.Sizeof(vv) == (ptrSize * 4) {
+		offsetScalar = ptrSize * 2
+		offsetFlag = ptrSize * 3
+	}
+
+	// Commit 90a7c3c86944 changed the flag positions such that the low
+	// order bits are the kind.  This code extracts the kind from the flags
+	// field and ensures it's the correct type.  When it's not, the flag
+	// order has been changed to the newer format, so the flags are updated
+	// accordingly.
+	upf := unsafe.Pointer(uintptr(unsafe.Pointer(&vv)) + offsetFlag)
+	upfv := *(*uintptr)(upf)
+	flagKindMask := uintptr((1<<flagKindWidth - 1) << flagKindShift)
+	if (upfv&flagKindMask)>>flagKindShift != uintptr(reflect.Int) {
+		flagKindShift = 0
+		flagRO = 1 << 5
+		flagIndir = 1 << 6
+
+		// Commit adf9b30e5594 modified the flags to separate the
+		// flagRO flag into two bits which specifies whether or not the
+		// field is embedded.  This causes flagIndir to move over a bit
+		// and means that flagRO is the combination of either of the
+		// original flagRO bit and the new bit.
+		//
+		// This code detects the change by extracting what used to be
+		// the indirect bit to ensure it's set.  When it's not, the flag
+		// order has been changed to the newer format, so the flags are
+		// updated accordingly.
+		if upfv&flagIndir == 0 {
+			flagRO = 3 << 5
+			flagIndir = 1 << 7
+		}
+	}
+}
+
+// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
+// the typical safety restrictions preventing access to unaddressable and
+// unexported data.  It works by digging the raw pointer to the underlying
+// value out of the protected value and generating a new unprotected (unsafe)
+// reflect.Value to it.
+//
+// This allows us to check for implementations of the Stringer and error
+// interfaces to be used for pretty printing ordinarily unaddressable and
+// inaccessible values such as unexported struct fields.
+func unsafeReflectValue(v reflect.Value) (rv reflect.Value) {
+	indirects := 1
+	vt := v.Type()
+	upv := unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetPtr)
+	rvf := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetFlag))
+	if rvf&flagIndir != 0 {
+		vt = reflect.PtrTo(v.Type())
+		indirects++
+	} else if offsetScalar != 0 {
+		// The value is in the scalar field when it's not one of the
+		// reference types.
+		switch vt.Kind() {
+		case reflect.Uintptr:
+		case reflect.Chan:
+		case reflect.Func:
+		case reflect.Map:
+		case reflect.Ptr:
+		case reflect.UnsafePointer:
+		default:
+			upv = unsafe.Pointer(uintptr(unsafe.Pointer(&v)) +
+				offsetScalar)
+		}
+	}
+
+	pv := reflect.NewAt(vt, upv)
+	rv = pv
+	for i := 0; i < indirects; i++ {
+		rv = rv.Elem()
+	}
+	return rv
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go b/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go
new file mode 100644
index 0000000..457e412
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/bypasssafe.go
@@ -0,0 +1,37 @@
+// Copyright (c) 2015 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when either the code is running on Google App Engine or "-tags disableunsafe"
+// is added to the go build command line.
+// +build appengine disableunsafe
+
+package spew
+
+import "reflect"
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = true
+)
+
+// unsafeReflectValue typically converts the passed reflect.Value into a one
+// that bypasses the typical safety restrictions preventing access to
+// unaddressable and unexported data.  However, doing this relies on access to
+// the unsafe package.  This is a stub version which simply returns the passed
+// reflect.Value when the unsafe package is not available.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+	return v
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/common.go b/vendor/github.com/davecgh/go-spew/spew/common.go
new file mode 100644
index 0000000..14f02dc
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/common.go
@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strconv"
+)
+
+// Some constants in the form of bytes to avoid string overhead.  This mirrors
+// the technique used in the fmt package.
+var (
+	panicBytes            = []byte("(PANIC=")
+	plusBytes             = []byte("+")
+	iBytes                = []byte("i")
+	trueBytes             = []byte("true")
+	falseBytes            = []byte("false")
+	interfaceBytes        = []byte("(interface {})")
+	commaNewlineBytes     = []byte(",\n")
+	newlineBytes          = []byte("\n")
+	openBraceBytes        = []byte("{")
+	openBraceNewlineBytes = []byte("{\n")
+	closeBraceBytes       = []byte("}")
+	asteriskBytes         = []byte("*")
+	colonBytes            = []byte(":")
+	colonSpaceBytes       = []byte(": ")
+	openParenBytes        = []byte("(")
+	closeParenBytes       = []byte(")")
+	spaceBytes            = []byte(" ")
+	pointerChainBytes     = []byte("->")
+	nilAngleBytes         = []byte("<nil>")
+	maxNewlineBytes       = []byte("<max depth reached>\n")
+	maxShortBytes         = []byte("<max>")
+	circularBytes         = []byte("<already shown>")
+	circularShortBytes    = []byte("<shown>")
+	invalidAngleBytes     = []byte("<invalid>")
+	openBracketBytes      = []byte("[")
+	closeBracketBytes     = []byte("]")
+	percentBytes          = []byte("%")
+	precisionBytes        = []byte(".")
+	openAngleBytes        = []byte("<")
+	closeAngleBytes       = []byte(">")
+	openMapBytes          = []byte("map[")
+	closeMapBytes         = []byte("]")
+	lenEqualsBytes        = []byte("len=")
+	capEqualsBytes        = []byte("cap=")
+)
+
+// hexDigits is used to map a decimal value to a hex digit.
+var hexDigits = "0123456789abcdef"
+
+// catchPanic handles any panics that might occur during the handleMethods
+// calls.
+func catchPanic(w io.Writer, v reflect.Value) {
+	if err := recover(); err != nil {
+		w.Write(panicBytes)
+		fmt.Fprintf(w, "%v", err)
+		w.Write(closeParenBytes)
+	}
+}
+
+// handleMethods attempts to call the Error and String methods on the underlying
+// type the passed reflect.Value represents and outputes the result to Writer w.
+//
+// It handles panics in any called methods by catching and displaying the error
+// as the formatted value.
+func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
+	// We need an interface to check if the type implements the error or
+	// Stringer interface.  However, the reflect package won't give us an
+	// interface on certain things like unexported struct fields in order
+	// to enforce visibility rules.  We use unsafe, when it's available,
+	// to bypass these restrictions since this package does not mutate the
+	// values.
+	if !v.CanInterface() {
+		if UnsafeDisabled {
+			return false
+		}
+
+		v = unsafeReflectValue(v)
+	}
+
+	// Choose whether or not to do error and Stringer interface lookups against
+	// the base type or a pointer to the base type depending on settings.
+	// Technically calling one of these methods with a pointer receiver can
+	// mutate the value, however, types which choose to satisify an error or
+	// Stringer interface with a pointer receiver should not be mutating their
+	// state inside these interface methods.
+	if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
+		v = unsafeReflectValue(v)
+	}
+	if v.CanAddr() {
+		v = v.Addr()
+	}
+
+	// Is it an error or Stringer?
+	switch iface := v.Interface().(type) {
+	case error:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.Error()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+
+		w.Write([]byte(iface.Error()))
+		return true
+
+	case fmt.Stringer:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.String()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+		w.Write([]byte(iface.String()))
+		return true
+	}
+	return false
+}
+
+// printBool outputs a boolean value as true or false to Writer w.
+func printBool(w io.Writer, val bool) {
+	if val {
+		w.Write(trueBytes)
+	} else {
+		w.Write(falseBytes)
+	}
+}
+
+// printInt outputs a signed integer value to Writer w.
+func printInt(w io.Writer, val int64, base int) {
+	w.Write([]byte(strconv.FormatInt(val, base)))
+}
+
+// printUint outputs an unsigned integer value to Writer w.
+func printUint(w io.Writer, val uint64, base int) {
+	w.Write([]byte(strconv.FormatUint(val, base)))
+}
+
+// printFloat outputs a floating point value using the specified precision,
+// which is expected to be 32 or 64bit, to Writer w.
+func printFloat(w io.Writer, val float64, precision int) {
+	w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
+}
+
+// printComplex outputs a complex value using the specified float precision
+// for the real and imaginary parts to Writer w.
+func printComplex(w io.Writer, c complex128, floatPrecision int) {
+	r := real(c)
+	w.Write(openParenBytes)
+	w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
+	i := imag(c)
+	if i >= 0 {
+		w.Write(plusBytes)
+	}
+	w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
+	w.Write(iBytes)
+	w.Write(closeParenBytes)
+}
+
+// printHexPtr outputs a uintptr formatted as hexidecimal with a leading '0x'
+// prefix to Writer w.
+func printHexPtr(w io.Writer, p uintptr) {
+	// Null pointer.
+	num := uint64(p)
+	if num == 0 {
+		w.Write(nilAngleBytes)
+		return
+	}
+
+	// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
+	buf := make([]byte, 18)
+
+	// It's simpler to construct the hex string right to left.
+	base := uint64(16)
+	i := len(buf) - 1
+	for num >= base {
+		buf[i] = hexDigits[num%base]
+		num /= base
+		i--
+	}
+	buf[i] = hexDigits[num]
+
+	// Add '0x' prefix.
+	i--
+	buf[i] = 'x'
+	i--
+	buf[i] = '0'
+
+	// Strip unused leading bytes.
+	buf = buf[i:]
+	w.Write(buf)
+}
+
+// valuesSorter implements sort.Interface to allow a slice of reflect.Value
+// elements to be sorted.
+type valuesSorter struct {
+	values  []reflect.Value
+	strings []string // either nil or same len and values
+	cs      *ConfigState
+}
+
+// newValuesSorter initializes a valuesSorter instance, which holds a set of
+// surrogate keys on which the data should be sorted.  It uses flags in
+// ConfigState to decide if and how to populate those surrogate keys.
+func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
+	vs := &valuesSorter{values: values, cs: cs}
+	if canSortSimply(vs.values[0].Kind()) {
+		return vs
+	}
+	if !cs.DisableMethods {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			b := bytes.Buffer{}
+			if !handleMethods(cs, &b, vs.values[i]) {
+				vs.strings = nil
+				break
+			}
+			vs.strings[i] = b.String()
+		}
+	}
+	if vs.strings == nil && cs.SpewKeys {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
+		}
+	}
+	return vs
+}
+
+// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
+// directly, or whether it should be considered for sorting by surrogate keys
+// (if the ConfigState allows it).
+func canSortSimply(kind reflect.Kind) bool {
+	// This switch parallels valueSortLess, except for the default case.
+	switch kind {
+	case reflect.Bool:
+		return true
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return true
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return true
+	case reflect.Float32, reflect.Float64:
+		return true
+	case reflect.String:
+		return true
+	case reflect.Uintptr:
+		return true
+	case reflect.Array:
+		return true
+	}
+	return false
+}
+
+// Len returns the number of values in the slice.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Len() int {
+	return len(s.values)
+}
+
+// Swap swaps the values at the passed indices.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Swap(i, j int) {
+	s.values[i], s.values[j] = s.values[j], s.values[i]
+	if s.strings != nil {
+		s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
+	}
+}
+
+// valueSortLess returns whether the first value should sort before the second
+// value.  It is used by valueSorter.Less as part of the sort.Interface
+// implementation.
+func valueSortLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return a.Int() < b.Int()
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return a.Uint() < b.Uint()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.String:
+		return a.String() < b.String()
+	case reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Array:
+		// Compare the contents of both arrays.
+		l := a.Len()
+		for i := 0; i < l; i++ {
+			av := a.Index(i)
+			bv := b.Index(i)
+			if av.Interface() == bv.Interface() {
+				continue
+			}
+			return valueSortLess(av, bv)
+		}
+	}
+	return a.String() < b.String()
+}
+
+// Less returns whether the value at index i should sort before the
+// value at index j.  It is part of the sort.Interface implementation.
+func (s *valuesSorter) Less(i, j int) bool {
+	if s.strings == nil {
+		return valueSortLess(s.values[i], s.values[j])
+	}
+	return s.strings[i] < s.strings[j]
+}
+
+// sortValues is a sort function that handles both native types and any type that
+// can be converted to error or Stringer.  Other inputs are sorted according to
+// their Value.String() value to ensure display stability.
+func sortValues(values []reflect.Value, cs *ConfigState) {
+	if len(values) == 0 {
+		return
+	}
+	sort.Sort(newValuesSorter(values, cs))
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/config.go b/vendor/github.com/davecgh/go-spew/spew/config.go
new file mode 100644
index 0000000..ee1ab07
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/config.go
@@ -0,0 +1,297 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+// ConfigState houses the configuration options used by spew to format and
+// display values.  There is a global instance, Config, that is used to control
+// all top-level Formatter and Dump functionality.  Each ConfigState instance
+// provides methods equivalent to the top-level functions.
+//
+// The zero value for ConfigState provides no indentation.  You would typically
+// want to set it to a space or a tab.
+//
+// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
+// with default settings.  See the documentation of NewDefaultConfig for default
+// values.
+type ConfigState struct {
+	// Indent specifies the string to use for each indentation level.  The
+	// global config instance that all top-level functions use set this to a
+	// single space by default.  If you would like more indentation, you might
+	// set this to a tab with "\t" or perhaps two spaces with "  ".
+	Indent string
+
+	// MaxDepth controls the maximum number of levels to descend into nested
+	// data structures.  The default, 0, means there is no limit.
+	//
+	// NOTE: Circular data structures are properly detected, so it is not
+	// necessary to set this value unless you specifically want to limit deeply
+	// nested data structures.
+	MaxDepth int
+
+	// DisableMethods specifies whether or not error and Stringer interfaces are
+	// invoked for types that implement them.
+	DisableMethods bool
+
+	// DisablePointerMethods specifies whether or not to check for and invoke
+	// error and Stringer interfaces on types which only accept a pointer
+	// receiver when the current type is not a pointer.
+	//
+	// NOTE: This might be an unsafe action since calling one of these methods
+	// with a pointer receiver could technically mutate the value, however,
+	// in practice, types which choose to satisify an error or Stringer
+	// interface with a pointer receiver should not be mutating their state
+	// inside these interface methods.  As a result, this option relies on
+	// access to the unsafe package, so it will not have any effect when
+	// running in environments without access to the unsafe package such as
+	// Google App Engine or with the "disableunsafe" build tag specified.
+	DisablePointerMethods bool
+
+	// ContinueOnMethod specifies whether or not recursion should continue once
+	// a custom error or Stringer interface is invoked.  The default, false,
+	// means it will print the results of invoking the custom error or Stringer
+	// interface and return immediately instead of continuing to recurse into
+	// the internals of the data type.
+	//
+	// NOTE: This flag does not have any effect if method invocation is disabled
+	// via the DisableMethods or DisablePointerMethods options.
+	ContinueOnMethod bool
+
+	// SortKeys specifies map keys should be sorted before being printed. Use
+	// this to have a more deterministic, diffable output.  Note that only
+	// native types (bool, int, uint, floats, uintptr and string) and types
+	// that support the error or Stringer interfaces (if methods are
+	// enabled) are supported, with other types sorted according to the
+	// reflect.Value.String() output which guarantees display stability.
+	SortKeys bool
+
+	// SpewKeys specifies that, as a last resort attempt, map keys should
+	// be spewed to strings and sorted by those strings.  This is only
+	// considered if SortKeys is true.
+	SpewKeys bool
+}
+
+// Config is the active configuration of the top-level functions.
+// The configuration can be changed by modifying the contents of spew.Config.
+var Config = ConfigState{Indent: " "}
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the formatted string as a value that satisfies error.  See NewFormatter
+// for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, c.convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, c.convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, c.convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a Formatter interface returned by c.NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, c.convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(c.convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, c.convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(c.convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprint(a ...interface{}) string {
+	return fmt.Sprint(c.convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, c.convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a Formatter interface returned by c.NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(c.convertArgs(a)...)
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+c.Printf, c.Println, or c.Printf.
+*/
+func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(c, v)
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
+	fdump(c, w, a...)
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by modifying the public members
+of c.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func (c *ConfigState) Dump(a ...interface{}) {
+	fdump(c, os.Stdout, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func (c *ConfigState) Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(c, &buf, a...)
+	return buf.String()
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a spew Formatter interface using
+// the ConfigState associated with s.
+func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = newFormatter(c, arg)
+	}
+	return formatters
+}
+
+// NewDefaultConfig returns a ConfigState with the following default settings.
+//
+// 	Indent: " "
+// 	MaxDepth: 0
+// 	DisableMethods: false
+// 	DisablePointerMethods: false
+// 	ContinueOnMethod: false
+// 	SortKeys: false
+func NewDefaultConfig() *ConfigState {
+	return &ConfigState{Indent: " "}
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/doc.go b/vendor/github.com/davecgh/go-spew/spew/doc.go
new file mode 100644
index 0000000..5be0c40
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/doc.go
@@ -0,0 +1,202 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+Package spew implements a deep pretty printer for Go data structures to aid in
+debugging.
+
+A quick overview of the additional features spew provides over the built-in
+printing facilities for Go data types are as follows:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output (only when using
+	  Dump style)
+
+There are two different approaches spew allows for dumping Go data structures:
+
+	* Dump style which prints with newlines, customizable indentation,
+	  and additional debug information such as types and all pointer addresses
+	  used to indirect to the final value
+	* A custom Formatter interface that integrates cleanly with the standard fmt
+	  package and replaces %v, %+v, %#v, and %#+v to provide inline printing
+	  similar to the default %v while providing the additional functionality
+	  outlined above and passing unsupported format verbs such as %x and %q
+	  along to fmt
+
+Quick Start
+
+This section demonstrates how to quickly get started with spew.  See the
+sections below for further details on formatting and configuration options.
+
+To dump a variable with full newlines, indentation, type, and pointer
+information use Dump, Fdump, or Sdump:
+	spew.Dump(myVar1, myVar2, ...)
+	spew.Fdump(someWriter, myVar1, myVar2, ...)
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Alternatively, if you would prefer to use format strings with a compacted inline
+printing style, use the convenience wrappers Printf, Fprintf, etc with
+%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
+%#+v (adds types and pointer addresses):
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+Configuration Options
+
+Configuration of spew is handled by fields in the ConfigState type.  For
+convenience, all of the top-level functions use a global state available
+via the spew.Config global.
+
+It is also possible to create a ConfigState instance that provides methods
+equivalent to the top-level functions.  This allows concurrent configuration
+options.  See the ConfigState documentation for more details.
+
+The following configuration options are available:
+	* Indent
+		String to use for each indentation level for Dump functions.
+		It is a single space by default.  A popular alternative is "\t".
+
+	* MaxDepth
+		Maximum number of levels to descend into nested data structures.
+		There is no limit by default.
+
+	* DisableMethods
+		Disables invocation of error and Stringer interface methods.
+		Method invocation is enabled by default.
+
+	* DisablePointerMethods
+		Disables invocation of error and Stringer interface methods on types
+		which only accept pointer receivers from non-pointer variables.
+		Pointer method invocation is enabled by default.
+
+	* ContinueOnMethod
+		Enables recursion into types after invoking error and Stringer interface
+		methods. Recursion after method invocation is disabled by default.
+
+	* SortKeys
+		Specifies map keys should be sorted before being printed. Use
+		this to have a more deterministic, diffable output.  Note that
+		only native types (bool, int, uint, floats, uintptr and string)
+		and types which implement error or Stringer interfaces are
+		supported with other types sorted according to the
+		reflect.Value.String() output which guarantees display
+		stability.  Natural map order is used by default.
+
+	* SpewKeys
+		Specifies that, as a last resort attempt, map keys should be
+		spewed to strings and sorted by those strings.  This is only
+		considered if SortKeys is true.
+
+Dump Usage
+
+Simply call spew.Dump with a list of variables you want to dump:
+
+	spew.Dump(myVar1, myVar2, ...)
+
+You may also call spew.Fdump if you would prefer to output to an arbitrary
+io.Writer.  For example, to dump to standard error:
+
+	spew.Fdump(os.Stderr, myVar1, myVar2, ...)
+
+A third option is to call spew.Sdump to get the formatted output as a string:
+
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Sample Dump Output
+
+See the Dump example for details on the setup of the types and variables being
+shown here.
+
+	(main.Foo) {
+	 unexportedField: (*main.Bar)(0xf84002e210)({
+	  flag: (main.Flag) flagTwo,
+	  data: (uintptr) <nil>
+	 }),
+	 ExportedField: (map[interface {}]interface {}) (len=1) {
+	  (string) (len=3) "one": (bool) true
+	 }
+	}
+
+Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
+command as shown.
+	([]uint8) (len=32 cap=32) {
+	 00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
+	 00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
+	 00000020  31 32                                             |12|
+	}
+
+Custom Formatter
+
+Spew provides a custom formatter that implements the fmt.Formatter interface
+so that it integrates cleanly with standard fmt package printing functions. The
+formatter is useful for inline printing of smaller data types similar to the
+standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Custom Formatter Usage
+
+The simplest way to make use of the spew custom formatter is to call one of the
+convenience functions such as spew.Printf, spew.Println, or spew.Printf.  The
+functions have syntax you are most likely already familiar with:
+
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Println(myVar, myVar2)
+	spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+See the Index for the full list convenience functions.
+
+Sample Formatter Output
+
+Double pointer to a uint8:
+	  %v: <**>5
+	 %+v: <**>(0xf8400420d0->0xf8400420c8)5
+	 %#v: (**uint8)5
+	%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
+
+Pointer to circular struct with a uint8 field and a pointer to itself:
+	  %v: <*>{1 <*><shown>}
+	 %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
+	 %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
+	%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
+
+See the Printf example for details on the setup of variables being shown
+here.
+
+Errors
+
+Since it is possible for custom Stringer/error interfaces to panic, spew
+detects them and handles them internally by printing the panic information
+inline with the output.  Since spew is intended to provide deep pretty printing
+capabilities on structures, it intentionally does not return any errors.
+*/
+package spew
diff --git a/vendor/github.com/davecgh/go-spew/spew/dump.go b/vendor/github.com/davecgh/go-spew/spew/dump.go
new file mode 100644
index 0000000..a0ff95e
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/dump.go
@@ -0,0 +1,509 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	// uint8Type is a reflect.Type representing a uint8.  It is used to
+	// convert cgo types to uint8 slices for hexdumping.
+	uint8Type = reflect.TypeOf(uint8(0))
+
+	// cCharRE is a regular expression that matches a cgo char.
+	// It is used to detect character arrays to hexdump them.
+	cCharRE = regexp.MustCompile("^.*\\._Ctype_char$")
+
+	// cUnsignedCharRE is a regular expression that matches a cgo unsigned
+	// char.  It is used to detect unsigned character arrays to hexdump
+	// them.
+	cUnsignedCharRE = regexp.MustCompile("^.*\\._Ctype_unsignedchar$")
+
+	// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
+	// It is used to detect uint8_t arrays to hexdump them.
+	cUint8tCharRE = regexp.MustCompile("^.*\\._Ctype_uint8_t$")
+)
+
+// dumpState contains information about the state of a dump operation.
+type dumpState struct {
+	w                io.Writer
+	depth            int
+	pointers         map[uintptr]int
+	ignoreNextType   bool
+	ignoreNextIndent bool
+	cs               *ConfigState
+}
+
+// indent performs indentation according to the depth level and cs.Indent
+// option.
+func (d *dumpState) indent() {
+	if d.ignoreNextIndent {
+		d.ignoreNextIndent = false
+		return
+	}
+	d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface && !v.IsNil() {
+		v = v.Elem()
+	}
+	return v
+}
+
+// dumpPtr handles formatting of pointers by indirecting them as necessary.
+func (d *dumpState) dumpPtr(v reflect.Value) {
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range d.pointers {
+		if depth >= d.depth {
+			delete(d.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by dereferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := d.pointers[addr]; ok && pd < d.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		d.pointers[addr] = d.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type information.
+	d.w.Write(openParenBytes)
+	d.w.Write(bytes.Repeat(asteriskBytes, indirects))
+	d.w.Write([]byte(ve.Type().String()))
+	d.w.Write(closeParenBytes)
+
+	// Display pointer information.
+	if len(pointerChain) > 0 {
+		d.w.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				d.w.Write(pointerChainBytes)
+			}
+			printHexPtr(d.w, addr)
+		}
+		d.w.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	d.w.Write(openParenBytes)
+	switch {
+	case nilFound == true:
+		d.w.Write(nilAngleBytes)
+
+	case cycleFound == true:
+		d.w.Write(circularBytes)
+
+	default:
+		d.ignoreNextType = true
+		d.dump(ve)
+	}
+	d.w.Write(closeParenBytes)
+}
+
+// dumpSlice handles formatting of arrays and slices.  Byte (uint8 under
+// reflection) arrays and slices are dumped in hexdump -C fashion.
+func (d *dumpState) dumpSlice(v reflect.Value) {
+	// Determine whether this type should be hex dumped or not.  Also,
+	// for types which should be hexdumped, try to use the underlying data
+	// first, then fall back to trying to convert them to a uint8 slice.
+	var buf []uint8
+	doConvert := false
+	doHexDump := false
+	numEntries := v.Len()
+	if numEntries > 0 {
+		vt := v.Index(0).Type()
+		vts := vt.String()
+		switch {
+		// C types that need to be converted.
+		case cCharRE.MatchString(vts):
+			fallthrough
+		case cUnsignedCharRE.MatchString(vts):
+			fallthrough
+		case cUint8tCharRE.MatchString(vts):
+			doConvert = true
+
+		// Try to use existing uint8 slices and fall back to converting
+		// and copying if that fails.
+		case vt.Kind() == reflect.Uint8:
+			// We need an addressable interface to convert the type
+			// to a byte slice.  However, the reflect package won't
+			// give us an interface on certain things like
+			// unexported struct fields in order to enforce
+			// visibility rules.  We use unsafe, when available, to
+			// bypass these restrictions since this package does not
+			// mutate the values.
+			vs := v
+			if !vs.CanInterface() || !vs.CanAddr() {
+				vs = unsafeReflectValue(vs)
+			}
+			if !UnsafeDisabled {
+				vs = vs.Slice(0, numEntries)
+
+				// Use the existing uint8 slice if it can be
+				// type asserted.
+				iface := vs.Interface()
+				if slice, ok := iface.([]uint8); ok {
+					buf = slice
+					doHexDump = true
+					break
+				}
+			}
+
+			// The underlying data needs to be converted if it can't
+			// be type asserted to a uint8 slice.
+			doConvert = true
+		}
+
+		// Copy and convert the underlying type if needed.
+		if doConvert && vt.ConvertibleTo(uint8Type) {
+			// Convert and copy each element into a uint8 byte
+			// slice.
+			buf = make([]uint8, numEntries)
+			for i := 0; i < numEntries; i++ {
+				vv := v.Index(i)
+				buf[i] = uint8(vv.Convert(uint8Type).Uint())
+			}
+			doHexDump = true
+		}
+	}
+
+	// Hexdump the entire slice as needed.
+	if doHexDump {
+		indent := strings.Repeat(d.cs.Indent, d.depth)
+		str := indent + hex.Dump(buf)
+		str = strings.Replace(str, "\n", "\n"+indent, -1)
+		str = strings.TrimRight(str, d.cs.Indent)
+		d.w.Write([]byte(str))
+		return
+	}
+
+	// Recursively call dump for each item.
+	for i := 0; i < numEntries; i++ {
+		d.dump(d.unpackValue(v.Index(i)))
+		if i < (numEntries - 1) {
+			d.w.Write(commaNewlineBytes)
+		} else {
+			d.w.Write(newlineBytes)
+		}
+	}
+}
+
+// dump is the main workhorse for dumping a value.  It uses the passed reflect
+// value to figure out what kind of object we are dealing with and formats it
+// appropriately.  It is a recursive function, however circular data structures
+// are detected and handled properly.
+func (d *dumpState) dump(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		d.w.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		d.indent()
+		d.dumpPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !d.ignoreNextType {
+		d.indent()
+		d.w.Write(openParenBytes)
+		d.w.Write([]byte(v.Type().String()))
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+	d.ignoreNextType = false
+
+	// Display length and capacity if the built-in len and cap functions
+	// work with the value's kind and the len/cap itself is non-zero.
+	valueLen, valueCap := 0, 0
+	switch v.Kind() {
+	case reflect.Array, reflect.Slice, reflect.Chan:
+		valueLen, valueCap = v.Len(), v.Cap()
+	case reflect.Map, reflect.String:
+		valueLen = v.Len()
+	}
+	if valueLen != 0 || valueCap != 0 {
+		d.w.Write(openParenBytes)
+		if valueLen != 0 {
+			d.w.Write(lenEqualsBytes)
+			printInt(d.w, int64(valueLen), 10)
+		}
+		if valueCap != 0 {
+			if valueLen != 0 {
+				d.w.Write(spaceBytes)
+			}
+			d.w.Write(capEqualsBytes)
+			printInt(d.w, int64(valueCap), 10)
+		}
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+
+	// Call Stringer/error interfaces if they exist and the handle methods flag
+	// is enabled
+	if !d.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(d.cs, d.w, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(d.w, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(d.w, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(d.w, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(d.w, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(d.w, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(d.w, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(d.w, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			d.dumpSlice(v)
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.String:
+		d.w.Write([]byte(strconv.Quote(v.String())))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			numEntries := v.Len()
+			keys := v.MapKeys()
+			if d.cs.SortKeys {
+				sortValues(keys, d.cs)
+			}
+			for i, key := range keys {
+				d.dump(d.unpackValue(key))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.MapIndex(key)))
+				if i < (numEntries - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Struct:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			vt := v.Type()
+			numFields := v.NumField()
+			for i := 0; i < numFields; i++ {
+				d.indent()
+				vtf := vt.Field(i)
+				d.w.Write([]byte(vtf.Name))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.Field(i)))
+				if i < (numFields - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(d.w, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(d.w, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it in case any new
+	// types are added.
+	default:
+		if v.CanInterface() {
+			fmt.Fprintf(d.w, "%v", v.Interface())
+		} else {
+			fmt.Fprintf(d.w, "%v", v.String())
+		}
+	}
+}
+
+// fdump is a helper function to consolidate the logic from the various public
+// methods which take varying writers and config states.
+func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
+	for _, arg := range a {
+		if arg == nil {
+			w.Write(interfaceBytes)
+			w.Write(spaceBytes)
+			w.Write(nilAngleBytes)
+			w.Write(newlineBytes)
+			continue
+		}
+
+		d := dumpState{w: w, cs: cs}
+		d.pointers = make(map[uintptr]int)
+		d.dump(reflect.ValueOf(arg))
+		d.w.Write(newlineBytes)
+	}
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func Fdump(w io.Writer, a ...interface{}) {
+	fdump(&Config, w, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(&Config, &buf, a...)
+	return buf.String()
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by an exported package global,
+spew.Config.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func Dump(a ...interface{}) {
+	fdump(&Config, os.Stdout, a...)
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/format.go b/vendor/github.com/davecgh/go-spew/spew/format.go
new file mode 100644
index 0000000..ecf3b80
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/format.go
@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+// supportedFlags is a list of all the character flags supported by fmt package.
+const supportedFlags = "0-+# "
+
+// formatState implements the fmt.Formatter interface and contains information
+// about the state of a formatting operation.  The NewFormatter function can
+// be used to get a new Formatter which can be used directly as arguments
+// in standard fmt package printing calls.
+type formatState struct {
+	value          interface{}
+	fs             fmt.State
+	depth          int
+	pointers       map[uintptr]int
+	ignoreNextType bool
+	cs             *ConfigState
+}
+
+// buildDefaultFormat recreates the original format string without precision
+// and width information to pass in to fmt.Sprintf in the case of an
+// unrecognized type.  Unless new types are added to the language, this
+// function won't ever be called.
+func (f *formatState) buildDefaultFormat() (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	buf.WriteRune('v')
+
+	format = buf.String()
+	return format
+}
+
+// constructOrigFormat recreates the original format string including precision
+// and width information to pass along to the standard fmt package.  This allows
+// automatic deferral of all format strings this package doesn't support.
+func (f *formatState) constructOrigFormat(verb rune) (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	if width, ok := f.fs.Width(); ok {
+		buf.WriteString(strconv.Itoa(width))
+	}
+
+	if precision, ok := f.fs.Precision(); ok {
+		buf.Write(precisionBytes)
+		buf.WriteString(strconv.Itoa(precision))
+	}
+
+	buf.WriteRune(verb)
+
+	format = buf.String()
+	return format
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible and
+// ensures that types for values which have been unpacked from an interface
+// are displayed when the show types flag is also set.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface {
+		f.ignoreNextType = false
+		if !v.IsNil() {
+			v = v.Elem()
+		}
+	}
+	return v
+}
+
+// formatPtr handles formatting of pointers by indirecting them as necessary.
+func (f *formatState) formatPtr(v reflect.Value) {
+	// Display nil if top level pointer is nil.
+	showTypes := f.fs.Flag('#')
+	if v.IsNil() && (!showTypes || f.ignoreNextType) {
+		f.fs.Write(nilAngleBytes)
+		return
+	}
+
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range f.pointers {
+		if depth >= f.depth {
+			delete(f.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to possibly show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by derferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := f.pointers[addr]; ok && pd < f.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		f.pointers[addr] = f.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type or indirection level depending on flags.
+	if showTypes && !f.ignoreNextType {
+		f.fs.Write(openParenBytes)
+		f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
+		f.fs.Write([]byte(ve.Type().String()))
+		f.fs.Write(closeParenBytes)
+	} else {
+		if nilFound || cycleFound {
+			indirects += strings.Count(ve.Type().String(), "*")
+		}
+		f.fs.Write(openAngleBytes)
+		f.fs.Write([]byte(strings.Repeat("*", indirects)))
+		f.fs.Write(closeAngleBytes)
+	}
+
+	// Display pointer information depending on flags.
+	if f.fs.Flag('+') && (len(pointerChain) > 0) {
+		f.fs.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				f.fs.Write(pointerChainBytes)
+			}
+			printHexPtr(f.fs, addr)
+		}
+		f.fs.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	switch {
+	case nilFound == true:
+		f.fs.Write(nilAngleBytes)
+
+	case cycleFound == true:
+		f.fs.Write(circularShortBytes)
+
+	default:
+		f.ignoreNextType = true
+		f.format(ve)
+	}
+}
+
+// format is the main workhorse for providing the Formatter interface.  It
+// uses the passed reflect value to figure out what kind of object we are
+// dealing with and formats it appropriately.  It is a recursive function,
+// however circular data structures are detected and handled properly.
+func (f *formatState) format(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		f.fs.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		f.formatPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !f.ignoreNextType && f.fs.Flag('#') {
+		f.fs.Write(openParenBytes)
+		f.fs.Write([]byte(v.Type().String()))
+		f.fs.Write(closeParenBytes)
+	}
+	f.ignoreNextType = false
+
+	// Call Stringer/error interfaces if they exist and the handle methods
+	// flag is enabled.
+	if !f.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(f.cs, f.fs, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(f.fs, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(f.fs, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(f.fs, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(f.fs, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(f.fs, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(f.fs, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(f.fs, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		f.fs.Write(openBracketBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			numEntries := v.Len()
+			for i := 0; i < numEntries; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.Index(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBracketBytes)
+
+	case reflect.String:
+		f.fs.Write([]byte(v.String()))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+
+		f.fs.Write(openMapBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			keys := v.MapKeys()
+			if f.cs.SortKeys {
+				sortValues(keys, f.cs)
+			}
+			for i, key := range keys {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(key))
+				f.fs.Write(colonBytes)
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.MapIndex(key)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeMapBytes)
+
+	case reflect.Struct:
+		numFields := v.NumField()
+		f.fs.Write(openBraceBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			vt := v.Type()
+			for i := 0; i < numFields; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				vtf := vt.Field(i)
+				if f.fs.Flag('+') || f.fs.Flag('#') {
+					f.fs.Write([]byte(vtf.Name))
+					f.fs.Write(colonBytes)
+				}
+				f.format(f.unpackValue(v.Field(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(f.fs, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(f.fs, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it if any get added.
+	default:
+		format := f.buildDefaultFormat()
+		if v.CanInterface() {
+			fmt.Fprintf(f.fs, format, v.Interface())
+		} else {
+			fmt.Fprintf(f.fs, format, v.String())
+		}
+	}
+}
+
+// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
+// details.
+func (f *formatState) Format(fs fmt.State, verb rune) {
+	f.fs = fs
+
+	// Use standard formatting for verbs that are not v.
+	if verb != 'v' {
+		format := f.constructOrigFormat(verb)
+		fmt.Fprintf(fs, format, f.value)
+		return
+	}
+
+	if f.value == nil {
+		if fs.Flag('#') {
+			fs.Write(interfaceBytes)
+		}
+		fs.Write(nilAngleBytes)
+		return
+	}
+
+	f.format(reflect.ValueOf(f.value))
+}
+
+// newFormatter is a helper function to consolidate the logic from the various
+// public methods which take varying config states.
+func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
+	fs := &formatState{value: v, cs: cs}
+	fs.pointers = make(map[uintptr]int)
+	return fs
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+Printf, Println, or Fprintf.
+*/
+func NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(&Config, v)
+}
diff --git a/vendor/github.com/davecgh/go-spew/spew/spew.go b/vendor/github.com/davecgh/go-spew/spew/spew.go
new file mode 100644
index 0000000..d8233f5
--- /dev/null
+++ b/vendor/github.com/davecgh/go-spew/spew/spew.go
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"fmt"
+	"io"
+)
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the formatted string as a value that satisfies error.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a default Formatter interface returned by NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
+func Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
+func Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprint(a ...interface{}) string {
+	return fmt.Sprint(convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(convertArgs(a)...)
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a default spew Formatter interface.
+func convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = NewFormatter(arg)
+	}
+	return formatters
+}
diff --git a/vendor/github.com/fsnotify/fsnotify/AUTHORS b/vendor/github.com/fsnotify/fsnotify/AUTHORS
new file mode 100644
index 0000000..6438bb3
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/AUTHORS
@@ -0,0 +1,43 @@
+# Names should be added to this file as
+#	Name or Organization <email address>
+# The email address is not required for organizations.
+
+# You can update this list using the following command:
+#
+#   $ git shortlog -se | awk '{print $2 " " $3 " " $4}'
+
+# Please keep the list sorted.
+
+Adrien Bustany <adrien@bustany.org>
+Amit Krishnan <amit.krishnan@oracle.com>
+Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com>
+Caleb Spare <cespare@gmail.com>
+Case Nelson <case@teammating.com>
+Chris Howey <chris@howey.me> <howeyc@gmail.com>
+Christoffer Buchholz <christoffer.buchholz@gmail.com>
+Daniel Wagner-Hall <dawagner@gmail.com>
+Dave Cheney <dave@cheney.net>
+Evan Phoenix <evan@fallingsnow.net>
+Francisco Souza <f@souza.cc>
+Hari haran <hariharan.uno@gmail.com>
+John C Barstow
+Kelvin Fo <vmirage@gmail.com>
+Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
+Matt Layher <mdlayher@gmail.com>
+Nathan Youngman <git@nathany.com>
+Paul Hammond <paul@paulhammond.org>
+Pawel Knap <pawelknap88@gmail.com>
+Pieter Droogendijk <pieter@binky.org.uk>
+Pursuit92 <JoshChase@techpursuit.net>
+Riku Voipio <riku.voipio@linaro.org>
+Rob Figueiredo <robfig@gmail.com>
+Soge Zhang <zhssoge@gmail.com>
+Tiffany Jernigan <tiffany.jernigan@intel.com>
+Tilak Sharma <tilaks@google.com>
+Travis Cline <travis.cline@gmail.com>
+Tudor Golubenco <tudor.g@gmail.com>
+Yukang <moorekang@gmail.com>
+bronze1man <bronze1man@gmail.com>
+debrando <denis.brandolini@gmail.com>
+henrikedwards <henrik.edwards@gmail.com>
+铁哥 <guotie.9@gmail.com>
diff --git a/vendor/github.com/fsnotify/fsnotify/CHANGELOG.md b/vendor/github.com/fsnotify/fsnotify/CHANGELOG.md
new file mode 100644
index 0000000..675fab9
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/CHANGELOG.md
@@ -0,0 +1,291 @@
+# Changelog
+
+## v1.3.0 / 2016-04-19
+
+* Support linux/arm64 by [patching](https://go-review.googlesource.com/#/c/21971/) x/sys/unix and switching to to it from syscall (thanks @suihkulokki) [#135](https://github.com/fsnotify/fsnotify/pull/135)
+
+## v1.2.10 / 2016-03-02
+
+* Fix golint errors in windows.go [#121](https://github.com/fsnotify/fsnotify/pull/121) (thanks @tiffanyfj)
+
+## v1.2.9 / 2016-01-13
+
+kqueue: Fix logic for CREATE after REMOVE [#111](https://github.com/fsnotify/fsnotify/pull/111) (thanks @bep)
+
+## v1.2.8 / 2015-12-17
+
+* kqueue: fix race condition in Close [#105](https://github.com/fsnotify/fsnotify/pull/105) (thanks @djui for reporting the issue and @ppknap for writing a failing test)
+* inotify: fix race in test
+* enable race detection for continuous integration (Linux, Mac, Windows)
+
+## v1.2.5 / 2015-10-17
+
+* inotify: use epoll_create1 for arm64 support (requires Linux 2.6.27 or later) [#100](https://github.com/fsnotify/fsnotify/pull/100) (thanks @suihkulokki)
+* inotify: fix path leaks [#73](https://github.com/fsnotify/fsnotify/pull/73) (thanks @chamaken)
+* kqueue: watch for rename events on subdirectories [#83](https://github.com/fsnotify/fsnotify/pull/83) (thanks @guotie)
+* kqueue: avoid infinite loops from symlinks cycles [#101](https://github.com/fsnotify/fsnotify/pull/101) (thanks @illicitonion)
+
+## v1.2.1 / 2015-10-14
+
+* kqueue: don't watch named pipes [#98](https://github.com/fsnotify/fsnotify/pull/98) (thanks @evanphx)
+
+## v1.2.0 / 2015-02-08
+
+* inotify: use epoll to wake up readEvents [#66](https://github.com/fsnotify/fsnotify/pull/66) (thanks @PieterD)
+* inotify: closing watcher should now always shut down goroutine [#63](https://github.com/fsnotify/fsnotify/pull/63) (thanks @PieterD)
+* kqueue: close kqueue after removing watches, fixes [#59](https://github.com/fsnotify/fsnotify/issues/59)
+
+## v1.1.1 / 2015-02-05
+
+* inotify: Retry read on EINTR [#61](https://github.com/fsnotify/fsnotify/issues/61) (thanks @PieterD)
+
+## v1.1.0 / 2014-12-12
+
+* kqueue: rework internals [#43](https://github.com/fsnotify/fsnotify/pull/43)
+    * add low-level functions
+    * only need to store flags on directories
+    * less mutexes [#13](https://github.com/fsnotify/fsnotify/issues/13)
+    * done can be an unbuffered channel
+    * remove calls to os.NewSyscallError
+* More efficient string concatenation for Event.String() [#52](https://github.com/fsnotify/fsnotify/pull/52) (thanks @mdlayher)
+* kqueue: fix regression in  rework causing subdirectories to be watched [#48](https://github.com/fsnotify/fsnotify/issues/48)
+* kqueue: cleanup internal watch before sending remove event [#51](https://github.com/fsnotify/fsnotify/issues/51)
+
+## v1.0.4 / 2014-09-07
+
+* kqueue: add dragonfly to the build tags.
+* Rename source code files, rearrange code so exported APIs are at the top.
+* Add done channel to example code. [#37](https://github.com/fsnotify/fsnotify/pull/37) (thanks @chenyukang)
+
+## v1.0.3 / 2014-08-19
+
+* [Fix] Windows MOVED_TO now translates to Create like on BSD and Linux. [#36](https://github.com/fsnotify/fsnotify/issues/36)
+
+## v1.0.2 / 2014-08-17
+
+* [Fix] Missing create events on OS X. [#14](https://github.com/fsnotify/fsnotify/issues/14) (thanks @zhsso)
+* [Fix] Make ./path and path equivalent. (thanks @zhsso)
+
+## v1.0.0 / 2014-08-15
+
+* [API] Remove AddWatch on Windows, use Add.
+* Improve documentation for exported identifiers. [#30](https://github.com/fsnotify/fsnotify/issues/30)
+* Minor updates based on feedback from golint.
+
+## dev / 2014-07-09
+
+* Moved to [github.com/fsnotify/fsnotify](https://github.com/fsnotify/fsnotify).
+* Use os.NewSyscallError instead of returning errno (thanks @hariharan-uno)
+
+## dev / 2014-07-04
+
+* kqueue: fix incorrect mutex used in Close()
+* Update example to demonstrate usage of Op.
+
+## dev / 2014-06-28
+
+* [API] Don't set the Write Op for attribute notifications [#4](https://github.com/fsnotify/fsnotify/issues/4)
+* Fix for String() method on Event (thanks Alex Brainman)
+* Don't build on Plan 9 or Solaris (thanks @4ad)
+
+## dev / 2014-06-21
+
+* Events channel of type Event rather than *Event.
+* [internal] use syscall constants directly for inotify and kqueue.
+* [internal] kqueue: rename events to kevents and fileEvent to event.
+
+## dev / 2014-06-19
+
+* Go 1.3+ required on Windows (uses syscall.ERROR_MORE_DATA internally).
+* [internal] remove cookie from Event struct (unused).
+* [internal] Event struct has the same definition across every OS.
+* [internal] remove internal watch and removeWatch methods.
+
+## dev / 2014-06-12
+
+* [API] Renamed Watch() to Add() and RemoveWatch() to Remove().
+* [API] Pluralized channel names: Events and Errors.
+* [API] Renamed FileEvent struct to Event.
+* [API] Op constants replace methods like IsCreate().
+
+## dev / 2014-06-12
+
+* Fix data race on kevent buffer (thanks @tilaks) [#98](https://github.com/howeyc/fsnotify/pull/98)
+
+## dev / 2014-05-23
+
+* [API] Remove current implementation of WatchFlags.
+    * current implementation doesn't take advantage of OS for efficiency
+    * provides little benefit over filtering events as they are received, but has  extra bookkeeping and mutexes
+    * no tests for the current implementation
+    * not fully implemented on Windows [#93](https://github.com/howeyc/fsnotify/issues/93#issuecomment-39285195)
+
+## v0.9.3 / 2014-12-31
+
+* kqueue: cleanup internal watch before sending remove event [#51](https://github.com/fsnotify/fsnotify/issues/51)
+
+## v0.9.2 / 2014-08-17
+
+* [Backport] Fix missing create events on OS X. [#14](https://github.com/fsnotify/fsnotify/issues/14) (thanks @zhsso)
+
+## v0.9.1 / 2014-06-12
+
+* Fix data race on kevent buffer (thanks @tilaks) [#98](https://github.com/howeyc/fsnotify/pull/98)
+
+## v0.9.0 / 2014-01-17
+
+* IsAttrib() for events that only concern a file's metadata [#79][] (thanks @abustany)
+* [Fix] kqueue: fix deadlock [#77][] (thanks @cespare)
+* [NOTICE] Development has moved to `code.google.com/p/go.exp/fsnotify` in preparation for inclusion in the Go standard library.
+
+## v0.8.12 / 2013-11-13
+
+* [API] Remove FD_SET and friends from Linux adapter
+
+## v0.8.11 / 2013-11-02
+
+* [Doc] Add Changelog [#72][] (thanks @nathany)
+* [Doc] Spotlight and double modify events on OS X [#62][] (reported by @paulhammond)
+
+## v0.8.10 / 2013-10-19
+
+* [Fix] kqueue: remove file watches when parent directory is removed [#71][] (reported by @mdwhatcott)
+* [Fix] kqueue: race between Close and readEvents [#70][] (reported by @bernerdschaefer)
+* [Doc] specify OS-specific limits in README (thanks @debrando)
+
+## v0.8.9 / 2013-09-08
+
+* [Doc] Contributing (thanks @nathany)
+* [Doc] update package path in example code [#63][] (thanks @paulhammond)
+* [Doc] GoCI badge in README (Linux only) [#60][]
+* [Doc] Cross-platform testing with Vagrant  [#59][] (thanks @nathany)
+
+## v0.8.8 / 2013-06-17
+
+* [Fix] Windows: handle `ERROR_MORE_DATA` on Windows [#49][] (thanks @jbowtie)
+
+## v0.8.7 / 2013-06-03
+
+* [API] Make syscall flags internal
+* [Fix] inotify: ignore event changes
+* [Fix] race in symlink test [#45][] (reported by @srid)
+* [Fix] tests on Windows
+* lower case error messages
+
+## v0.8.6 / 2013-05-23
+
+* kqueue: Use EVT_ONLY flag on Darwin
+* [Doc] Update README with full example
+
+## v0.8.5 / 2013-05-09
+
+* [Fix] inotify: allow monitoring of "broken" symlinks (thanks @tsg)
+
+## v0.8.4 / 2013-04-07
+
+* [Fix] kqueue: watch all file events [#40][] (thanks @ChrisBuchholz)
+
+## v0.8.3 / 2013-03-13
+
+* [Fix] inoitfy/kqueue memory leak [#36][] (reported by @nbkolchin)
+* [Fix] kqueue: use fsnFlags for watching a directory [#33][] (reported by @nbkolchin)
+
+## v0.8.2 / 2013-02-07
+
+* [Doc] add Authors
+* [Fix] fix data races for map access [#29][] (thanks @fsouza)
+
+## v0.8.1 / 2013-01-09
+
+* [Fix] Windows path separators
+* [Doc] BSD License
+
+## v0.8.0 / 2012-11-09
+
+* kqueue: directory watching improvements (thanks @vmirage)
+* inotify: add `IN_MOVED_TO` [#25][] (requested by @cpisto)
+* [Fix] kqueue: deleting watched directory [#24][] (reported by @jakerr)
+
+## v0.7.4 / 2012-10-09
+
+* [Fix] inotify: fixes from https://codereview.appspot.com/5418045/ (ugorji)
+* [Fix] kqueue: preserve watch flags when watching for delete [#21][] (reported by @robfig)
+* [Fix] kqueue: watch the directory even if it isn't a new watch (thanks @robfig)
+* [Fix] kqueue: modify after recreation of file
+
+## v0.7.3 / 2012-09-27
+
+* [Fix] kqueue: watch with an existing folder inside the watched folder (thanks @vmirage)
+* [Fix] kqueue: no longer get duplicate CREATE events
+
+## v0.7.2 / 2012-09-01
+
+* kqueue: events for created directories
+
+## v0.7.1 / 2012-07-14
+
+* [Fix] for renaming files
+
+## v0.7.0 / 2012-07-02
+
+* [Feature] FSNotify flags
+* [Fix] inotify: Added file name back to event path
+
+## v0.6.0 / 2012-06-06
+
+* kqueue: watch files after directory created (thanks @tmc)
+
+## v0.5.1 / 2012-05-22
+
+* [Fix] inotify: remove all watches before Close()
+
+## v0.5.0 / 2012-05-03
+
+* [API] kqueue: return errors during watch instead of sending over channel
+* kqueue: match symlink behavior on Linux
+* inotify: add `DELETE_SELF` (requested by @taralx)
+* [Fix] kqueue: handle EINTR (reported by @robfig)
+* [Doc] Godoc example [#1][] (thanks @davecheney)
+
+## v0.4.0 / 2012-03-30
+
+* Go 1 released: build with go tool
+* [Feature] Windows support using winfsnotify
+* Windows does not have attribute change notifications
+* Roll attribute notifications into IsModify
+
+## v0.3.0 / 2012-02-19
+
+* kqueue: add files when watch directory
+
+## v0.2.0 / 2011-12-30
+
+* update to latest Go weekly code
+
+## v0.1.0 / 2011-10-19
+
+* kqueue: add watch on file creation to match inotify
+* kqueue: create file event
+* inotify: ignore `IN_IGNORED` events
+* event String()
+* linux: common FileEvent functions
+* initial commit
+
+[#79]: https://github.com/howeyc/fsnotify/pull/79
+[#77]: https://github.com/howeyc/fsnotify/pull/77
+[#72]: https://github.com/howeyc/fsnotify/issues/72
+[#71]: https://github.com/howeyc/fsnotify/issues/71
+[#70]: https://github.com/howeyc/fsnotify/issues/70
+[#63]: https://github.com/howeyc/fsnotify/issues/63
+[#62]: https://github.com/howeyc/fsnotify/issues/62
+[#60]: https://github.com/howeyc/fsnotify/issues/60
+[#59]: https://github.com/howeyc/fsnotify/issues/59
+[#49]: https://github.com/howeyc/fsnotify/issues/49
+[#45]: https://github.com/howeyc/fsnotify/issues/45
+[#40]: https://github.com/howeyc/fsnotify/issues/40
+[#36]: https://github.com/howeyc/fsnotify/issues/36
+[#33]: https://github.com/howeyc/fsnotify/issues/33
+[#29]: https://github.com/howeyc/fsnotify/issues/29
+[#25]: https://github.com/howeyc/fsnotify/issues/25
+[#24]: https://github.com/howeyc/fsnotify/issues/24
+[#21]: https://github.com/howeyc/fsnotify/issues/21
diff --git a/vendor/github.com/fsnotify/fsnotify/CONTRIBUTING.md b/vendor/github.com/fsnotify/fsnotify/CONTRIBUTING.md
new file mode 100644
index 0000000..617e45a
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/CONTRIBUTING.md
@@ -0,0 +1,77 @@
+# Contributing
+
+## Issues
+
+* Request features and report bugs using the [GitHub Issue Tracker](https://github.com/fsnotify/fsnotify/issues).
+* Please indicate the platform you are using fsnotify on.
+* A code example to reproduce the problem is appreciated.
+
+## Pull Requests
+
+### Contributor License Agreement
+
+fsnotify is derived from code in the [golang.org/x/exp](https://godoc.org/golang.org/x/exp) package and it may be included [in the standard library](https://github.com/fsnotify/fsnotify/issues/1) in the future. Therefore fsnotify carries the same [LICENSE](https://github.com/fsnotify/fsnotify/blob/master/LICENSE) as Go. Contributors retain their copyright, so you need to fill out a short form before we can accept your contribution: [Google Individual Contributor License Agreement](https://developers.google.com/open-source/cla/individual).
+
+Please indicate that you have signed the CLA in your pull request.
+
+### How fsnotify is Developed
+
+* Development is done on feature branches.
+* Tests are run on BSD, Linux, OS X and Windows.
+* Pull requests are reviewed and [applied to master][am] using [hub][].
+  * Maintainers may modify or squash commits rather than asking contributors to.
+* To issue a new release, the maintainers will:
+  * Update the CHANGELOG
+  * Tag a version, which will become available through gopkg.in.
+ 
+### How to Fork
+
+For smooth sailing, always use the original import path. Installing with `go get` makes this easy. 
+
+1. Install from GitHub (`go get -u github.com/fsnotify/fsnotify`)
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Ensure everything works and the tests pass (see below)
+4. Commit your changes (`git commit -am 'Add some feature'`)
+
+Contribute upstream:
+
+1. Fork fsnotify on GitHub
+2. Add your remote (`git remote add fork git@github.com:mycompany/repo.git`)
+3. Push to the branch (`git push fork my-new-feature`)
+4. Create a new Pull Request on GitHub
+
+This workflow is [thoroughly explained by Katrina Owen](https://blog.splice.com/contributing-open-source-git-repositories-go/).
+
+### Testing
+
+fsnotify uses build tags to compile different code on Linux, BSD, OS X, and Windows.
+
+Before doing a pull request, please do your best to test your changes on multiple platforms, and list which platforms you were able/unable to test on.
+
+To aid in cross-platform testing there is a Vagrantfile for Linux and BSD.
+
+* Install [Vagrant](http://www.vagrantup.com/) and [VirtualBox](https://www.virtualbox.org/)
+* Setup [Vagrant Gopher](https://github.com/nathany/vagrant-gopher) in your `src` folder.
+* Run `vagrant up` from the project folder. You can also setup just one box with `vagrant up linux` or `vagrant up bsd` (note: the BSD box doesn't support Windows hosts at this time, and NFS may prompt for your host OS password)
+* Once setup, you can run the test suite on a given OS with a single command `vagrant ssh linux -c 'cd fsnotify/fsnotify; go test'`.
+* When you're done, you will want to halt or destroy the Vagrant boxes.
+
+Notice: fsnotify file system events won't trigger in shared folders. The tests get around this limitation by using the /tmp directory.
+
+Right now there is no equivalent solution for Windows and OS X, but there are Windows VMs [freely available from Microsoft](http://www.modern.ie/en-us/virtualization-tools#downloads).
+
+### Maintainers
+
+Help maintaining fsnotify is welcome. To be a maintainer:
+
+* Submit a pull request and sign the CLA as above.
+* You must be able to run the test suite on Mac, Windows, Linux and BSD.
+
+To keep master clean, the fsnotify project uses the "apply mail" workflow outlined in Nathaniel Talbott's post ["Merge pull request" Considered Harmful][am]. This requires installing [hub][].
+
+All code changes should be internal pull requests.
+
+Releases are tagged using [Semantic Versioning](http://semver.org/).
+
+[hub]: https://github.com/github/hub
+[am]: http://blog.spreedly.com/2014/06/24/merge-pull-request-considered-harmful/#.VGa5yZPF_Zs
diff --git a/vendor/github.com/fsnotify/fsnotify/LICENSE b/vendor/github.com/fsnotify/fsnotify/LICENSE
new file mode 100644
index 0000000..f21e540
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/LICENSE
@@ -0,0 +1,28 @@
+Copyright (c) 2012 The Go Authors. All rights reserved.
+Copyright (c) 2012 fsnotify Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/fsnotify/fsnotify/README.md b/vendor/github.com/fsnotify/fsnotify/README.md
new file mode 100644
index 0000000..5ebce86
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/README.md
@@ -0,0 +1,50 @@
+# File system notifications for Go
+
+[![GoDoc](https://godoc.org/github.com/fsnotify/fsnotify?status.svg)](https://godoc.org/github.com/fsnotify/fsnotify) [![Go Report Card](https://goreportcard.com/badge/github.com/fsnotify/fsnotify)](https://goreportcard.com/report/github.com/fsnotify/fsnotify) [![Coverage](http://gocover.io/_badge/github.com/fsnotify/fsnotify)](http://gocover.io/github.com/fsnotify/fsnotify) 
+
+fsnotify utilizes [golang.org/x/sys](https://godoc.org/golang.org/x/sys) rather than `syscall` from the standard library. Ensure you have the latest version installed by running:
+
+```console
+go get -u golang.org/x/sys/...
+```
+
+Cross platform: Windows, Linux, BSD and OS X.
+
+|Adapter   |OS        |Status    |
+|----------|----------|----------|
+|inotify   |Linux 2.6.27 or later, Android\*|Supported [![Build Status](https://travis-ci.org/fsnotify/fsnotify.svg?branch=master)](https://travis-ci.org/fsnotify/fsnotify)|
+|kqueue    |BSD, OS X, iOS\*|Supported [![Build Status](https://travis-ci.org/fsnotify/fsnotify.svg?branch=master)](https://travis-ci.org/fsnotify/fsnotify)|
+|ReadDirectoryChangesW|Windows|Supported [![Build status](https://ci.appveyor.com/api/projects/status/ivwjubaih4r0udeh/branch/master?svg=true)](https://ci.appveyor.com/project/NathanYoungman/fsnotify/branch/master)|
+|FSEvents  |OS X          |[Planned](https://github.com/fsnotify/fsnotify/issues/11)|
+|FEN       |Solaris 11    |[In Progress](https://github.com/fsnotify/fsnotify/issues/12)|
+|fanotify  |Linux 2.6.37+ | |
+|USN Journals |Windows    |[Maybe](https://github.com/fsnotify/fsnotify/issues/53)|
+|Polling   |*All*         |[Maybe](https://github.com/fsnotify/fsnotify/issues/9)|
+
+\* Android and iOS are untested.
+
+Please see [the documentation](https://godoc.org/github.com/fsnotify/fsnotify) for usage. Consult the [Wiki](https://github.com/fsnotify/fsnotify/wiki) for the FAQ and further information.
+
+## API stability
+
+fsnotify is a fork of [howeyc/fsnotify](https://godoc.org/github.com/howeyc/fsnotify) with a new API as of v1.0. The API is based on [this design document](http://goo.gl/MrYxyA). 
+
+All [releases](https://github.com/fsnotify/fsnotify/releases) are tagged based on [Semantic Versioning](http://semver.org/). Further API changes are [planned](https://github.com/fsnotify/fsnotify/milestones), and will be tagged with a new major revision number.
+
+Go 1.6 supports dependencies located in the `vendor/` folder. Unless you are creating a library, it is recommended that you copy fsnotify into `vendor/github.com/fsnotify/fsnotify` within your project, and likewise for `golang.org/x/sys`.
+
+## Contributing
+
+Please refer to [CONTRIBUTING][] before opening an issue or pull request.
+
+## Example
+
+See [example_test.go](https://github.com/fsnotify/fsnotify/blob/master/example_test.go).
+
+[contributing]: https://github.com/fsnotify/fsnotify/blob/master/CONTRIBUTING.md
+
+## Related Projects
+
+* [notify](https://github.com/rjeczalik/notify)
+* [fsevents](https://github.com/fsnotify/fsevents)
+
diff --git a/vendor/github.com/fsnotify/fsnotify/fen.go b/vendor/github.com/fsnotify/fsnotify/fen.go
new file mode 100644
index 0000000..ced39cb
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/fen.go
@@ -0,0 +1,37 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build solaris
+
+package fsnotify
+
+import (
+	"errors"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct {
+	Events chan Event
+	Errors chan error
+}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+	return nil, errors.New("FEN based watcher not yet supported for fsnotify\n")
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+	return nil
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+	return nil
+}
+
+// Remove stops watching the the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+	return nil
+}
diff --git a/vendor/github.com/fsnotify/fsnotify/fsnotify.go b/vendor/github.com/fsnotify/fsnotify/fsnotify.go
new file mode 100644
index 0000000..d1d39a0
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/fsnotify.go
@@ -0,0 +1,62 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !plan9
+
+// Package fsnotify provides a platform-independent interface for file system notifications.
+package fsnotify
+
+import (
+	"bytes"
+	"fmt"
+)
+
+// Event represents a single file system notification.
+type Event struct {
+	Name string // Relative path to the file or directory.
+	Op   Op     // File operation that triggered the event.
+}
+
+// Op describes a set of file operations.
+type Op uint32
+
+// These are the generalized file operations that can trigger a notification.
+const (
+	Create Op = 1 << iota
+	Write
+	Remove
+	Rename
+	Chmod
+)
+
+// String returns a string representation of the event in the form
+// "file: REMOVE|WRITE|..."
+func (e Event) String() string {
+	// Use a buffer for efficient string concatenation
+	var buffer bytes.Buffer
+
+	if e.Op&Create == Create {
+		buffer.WriteString("|CREATE")
+	}
+	if e.Op&Remove == Remove {
+		buffer.WriteString("|REMOVE")
+	}
+	if e.Op&Write == Write {
+		buffer.WriteString("|WRITE")
+	}
+	if e.Op&Rename == Rename {
+		buffer.WriteString("|RENAME")
+	}
+	if e.Op&Chmod == Chmod {
+		buffer.WriteString("|CHMOD")
+	}
+
+	// If buffer remains empty, return no event names
+	if buffer.Len() == 0 {
+		return fmt.Sprintf("%q: ", e.Name)
+	}
+
+	// Return a list of event names, with leading pipe character stripped
+	return fmt.Sprintf("%q: %s", e.Name, buffer.String()[1:])
+}
diff --git a/vendor/github.com/fsnotify/fsnotify/inotify.go b/vendor/github.com/fsnotify/fsnotify/inotify.go
new file mode 100644
index 0000000..9700df5
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/inotify.go
@@ -0,0 +1,325 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package fsnotify
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct {
+	Events   chan Event
+	Errors   chan error
+	mu       sync.Mutex // Map access
+	cv       *sync.Cond // sync removing on rm_watch with IN_IGNORE
+	fd       int
+	poller   *fdPoller
+	watches  map[string]*watch // Map of inotify watches (key: path)
+	paths    map[int]string    // Map of watched paths (key: watch descriptor)
+	done     chan struct{}     // Channel for sending a "quit message" to the reader goroutine
+	doneResp chan struct{}     // Channel to respond to Close
+}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+	// Create inotify fd
+	fd, errno := unix.InotifyInit()
+	if fd == -1 {
+		return nil, errno
+	}
+	// Create epoll
+	poller, err := newFdPoller(fd)
+	if err != nil {
+		unix.Close(fd)
+		return nil, err
+	}
+	w := &Watcher{
+		fd:       fd,
+		poller:   poller,
+		watches:  make(map[string]*watch),
+		paths:    make(map[int]string),
+		Events:   make(chan Event),
+		Errors:   make(chan error),
+		done:     make(chan struct{}),
+		doneResp: make(chan struct{}),
+	}
+	w.cv = sync.NewCond(&w.mu)
+
+	go w.readEvents()
+	return w, nil
+}
+
+func (w *Watcher) isClosed() bool {
+	select {
+	case <-w.done:
+		return true
+	default:
+		return false
+	}
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+	if w.isClosed() {
+		return nil
+	}
+
+	// Send 'close' signal to goroutine, and set the Watcher to closed.
+	close(w.done)
+
+	// Wake up goroutine
+	w.poller.wake()
+
+	// Wait for goroutine to close
+	<-w.doneResp
+
+	return nil
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+	name = filepath.Clean(name)
+	if w.isClosed() {
+		return errors.New("inotify instance already closed")
+	}
+
+	const agnosticEvents = unix.IN_MOVED_TO | unix.IN_MOVED_FROM |
+		unix.IN_CREATE | unix.IN_ATTRIB | unix.IN_MODIFY |
+		unix.IN_MOVE_SELF | unix.IN_DELETE | unix.IN_DELETE_SELF
+
+	var flags uint32 = agnosticEvents
+
+	w.mu.Lock()
+	watchEntry, found := w.watches[name]
+	w.mu.Unlock()
+	if found {
+		watchEntry.flags |= flags
+		flags |= unix.IN_MASK_ADD
+	}
+	wd, errno := unix.InotifyAddWatch(w.fd, name, flags)
+	if wd == -1 {
+		return errno
+	}
+
+	w.mu.Lock()
+	w.watches[name] = &watch{wd: uint32(wd), flags: flags}
+	w.paths[wd] = name
+	w.mu.Unlock()
+
+	return nil
+}
+
+// Remove stops watching the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+	name = filepath.Clean(name)
+
+	// Fetch the watch.
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	watch, ok := w.watches[name]
+
+	// Remove it from inotify.
+	if !ok {
+		return fmt.Errorf("can't remove non-existent inotify watch for: %s", name)
+	}
+	// inotify_rm_watch will return EINVAL if the file has been deleted;
+	// the inotify will already have been removed.
+	// watches and pathes are deleted in ignoreLinux() implicitly and asynchronously
+	// by calling inotify_rm_watch() below. e.g. readEvents() goroutine receives IN_IGNORE
+	// so that EINVAL means that the wd is being rm_watch()ed or its file removed
+	// by another thread and we have not received IN_IGNORE event.
+	success, errno := unix.InotifyRmWatch(w.fd, watch.wd)
+	if success == -1 {
+		// TODO: Perhaps it's not helpful to return an error here in every case.
+		// the only two possible errors are:
+		// EBADF, which happens when w.fd is not a valid file descriptor of any kind.
+		// EINVAL, which is when fd is not an inotify descriptor or wd is not a valid watch descriptor.
+		// Watch descriptors are invalidated when they are removed explicitly or implicitly;
+		// explicitly by inotify_rm_watch, implicitly when the file they are watching is deleted.
+		return errno
+	}
+
+	// wait until ignoreLinux() deleting maps
+	exists := true
+	for exists {
+		w.cv.Wait()
+		_, exists = w.watches[name]
+	}
+
+	return nil
+}
+
+type watch struct {
+	wd    uint32 // Watch descriptor (as returned by the inotify_add_watch() syscall)
+	flags uint32 // inotify flags of this watch (see inotify(7) for the list of valid flags)
+}
+
+// readEvents reads from the inotify file descriptor, converts the
+// received events into Event objects and sends them via the Events channel
+func (w *Watcher) readEvents() {
+	var (
+		buf   [unix.SizeofInotifyEvent * 4096]byte // Buffer for a maximum of 4096 raw events
+		n     int                                  // Number of bytes read with read()
+		errno error                                // Syscall errno
+		ok    bool                                 // For poller.wait
+	)
+
+	defer close(w.doneResp)
+	defer close(w.Errors)
+	defer close(w.Events)
+	defer unix.Close(w.fd)
+	defer w.poller.close()
+
+	for {
+		// See if we have been closed.
+		if w.isClosed() {
+			return
+		}
+
+		ok, errno = w.poller.wait()
+		if errno != nil {
+			select {
+			case w.Errors <- errno:
+			case <-w.done:
+				return
+			}
+			continue
+		}
+
+		if !ok {
+			continue
+		}
+
+		n, errno = unix.Read(w.fd, buf[:])
+		// If a signal interrupted execution, see if we've been asked to close, and try again.
+		// http://man7.org/linux/man-pages/man7/signal.7.html :
+		// "Before Linux 3.8, reads from an inotify(7) file descriptor were not restartable"
+		if errno == unix.EINTR {
+			continue
+		}
+
+		// unix.Read might have been woken up by Close. If so, we're done.
+		if w.isClosed() {
+			return
+		}
+
+		if n < unix.SizeofInotifyEvent {
+			var err error
+			if n == 0 {
+				// If EOF is received. This should really never happen.
+				err = io.EOF
+			} else if n < 0 {
+				// If an error occurred while reading.
+				err = errno
+			} else {
+				// Read was too short.
+				err = errors.New("notify: short read in readEvents()")
+			}
+			select {
+			case w.Errors <- err:
+			case <-w.done:
+				return
+			}
+			continue
+		}
+
+		var offset uint32
+		// We don't know how many events we just read into the buffer
+		// While the offset points to at least one whole event...
+		for offset <= uint32(n-unix.SizeofInotifyEvent) {
+			// Point "raw" to the event in the buffer
+			raw := (*unix.InotifyEvent)(unsafe.Pointer(&buf[offset]))
+
+			mask := uint32(raw.Mask)
+			nameLen := uint32(raw.Len)
+			// If the event happened to the watched directory or the watched file, the kernel
+			// doesn't append the filename to the event, but we would like to always fill the
+			// the "Name" field with a valid filename. We retrieve the path of the watch from
+			// the "paths" map.
+			w.mu.Lock()
+			name := w.paths[int(raw.Wd)]
+			w.mu.Unlock()
+			if nameLen > 0 {
+				// Point "bytes" at the first byte of the filename
+				bytes := (*[unix.PathMax]byte)(unsafe.Pointer(&buf[offset+unix.SizeofInotifyEvent]))
+				// The filename is padded with NULL bytes. TrimRight() gets rid of those.
+				name += "/" + strings.TrimRight(string(bytes[0:nameLen]), "\000")
+			}
+
+			event := newEvent(name, mask)
+
+			// Send the events that are not ignored on the events channel
+			if !event.ignoreLinux(w, raw.Wd, mask) {
+				select {
+				case w.Events <- event:
+				case <-w.done:
+					return
+				}
+			}
+
+			// Move to the next event in the buffer
+			offset += unix.SizeofInotifyEvent + nameLen
+		}
+	}
+}
+
+// Certain types of events can be "ignored" and not sent over the Events
+// channel. Such as events marked ignore by the kernel, or MODIFY events
+// against files that do not exist.
+func (e *Event) ignoreLinux(w *Watcher, wd int32, mask uint32) bool {
+	// Ignore anything the inotify API says to ignore
+	if mask&unix.IN_IGNORED == unix.IN_IGNORED {
+		w.mu.Lock()
+		defer w.mu.Unlock()
+		name := w.paths[int(wd)]
+		delete(w.paths, int(wd))
+		delete(w.watches, name)
+		w.cv.Broadcast()
+		return true
+	}
+
+	// If the event is not a DELETE or RENAME, the file must exist.
+	// Otherwise the event is ignored.
+	// *Note*: this was put in place because it was seen that a MODIFY
+	// event was sent after the DELETE. This ignores that MODIFY and
+	// assumes a DELETE will come or has come if the file doesn't exist.
+	if !(e.Op&Remove == Remove || e.Op&Rename == Rename) {
+		_, statErr := os.Lstat(e.Name)
+		return os.IsNotExist(statErr)
+	}
+	return false
+}
+
+// newEvent returns an platform-independent Event based on an inotify mask.
+func newEvent(name string, mask uint32) Event {
+	e := Event{Name: name}
+	if mask&unix.IN_CREATE == unix.IN_CREATE || mask&unix.IN_MOVED_TO == unix.IN_MOVED_TO {
+		e.Op |= Create
+	}
+	if mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF || mask&unix.IN_DELETE == unix.IN_DELETE {
+		e.Op |= Remove
+	}
+	if mask&unix.IN_MODIFY == unix.IN_MODIFY {
+		e.Op |= Write
+	}
+	if mask&unix.IN_MOVE_SELF == unix.IN_MOVE_SELF || mask&unix.IN_MOVED_FROM == unix.IN_MOVED_FROM {
+		e.Op |= Rename
+	}
+	if mask&unix.IN_ATTRIB == unix.IN_ATTRIB {
+		e.Op |= Chmod
+	}
+	return e
+}
diff --git a/vendor/github.com/fsnotify/fsnotify/inotify_poller.go b/vendor/github.com/fsnotify/fsnotify/inotify_poller.go
new file mode 100644
index 0000000..cc7db4b
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/inotify_poller.go
@@ -0,0 +1,187 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package fsnotify
+
+import (
+	"errors"
+
+	"golang.org/x/sys/unix"
+)
+
+type fdPoller struct {
+	fd   int    // File descriptor (as returned by the inotify_init() syscall)
+	epfd int    // Epoll file descriptor
+	pipe [2]int // Pipe for waking up
+}
+
+func emptyPoller(fd int) *fdPoller {
+	poller := new(fdPoller)
+	poller.fd = fd
+	poller.epfd = -1
+	poller.pipe[0] = -1
+	poller.pipe[1] = -1
+	return poller
+}
+
+// Create a new inotify poller.
+// This creates an inotify handler, and an epoll handler.
+func newFdPoller(fd int) (*fdPoller, error) {
+	var errno error
+	poller := emptyPoller(fd)
+	defer func() {
+		if errno != nil {
+			poller.close()
+		}
+	}()
+	poller.fd = fd
+
+	// Create epoll fd
+	poller.epfd, errno = unix.EpollCreate1(0)
+	if poller.epfd == -1 {
+		return nil, errno
+	}
+	// Create pipe; pipe[0] is the read end, pipe[1] the write end.
+	errno = unix.Pipe2(poller.pipe[:], unix.O_NONBLOCK)
+	if errno != nil {
+		return nil, errno
+	}
+
+	// Register inotify fd with epoll
+	event := unix.EpollEvent{
+		Fd:     int32(poller.fd),
+		Events: unix.EPOLLIN,
+	}
+	errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.fd, &event)
+	if errno != nil {
+		return nil, errno
+	}
+
+	// Register pipe fd with epoll
+	event = unix.EpollEvent{
+		Fd:     int32(poller.pipe[0]),
+		Events: unix.EPOLLIN,
+	}
+	errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.pipe[0], &event)
+	if errno != nil {
+		return nil, errno
+	}
+
+	return poller, nil
+}
+
+// Wait using epoll.
+// Returns true if something is ready to be read,
+// false if there is not.
+func (poller *fdPoller) wait() (bool, error) {
+	// 3 possible events per fd, and 2 fds, makes a maximum of 6 events.
+	// I don't know whether epoll_wait returns the number of events returned,
+	// or the total number of events ready.
+	// I decided to catch both by making the buffer one larger than the maximum.
+	events := make([]unix.EpollEvent, 7)
+	for {
+		n, errno := unix.EpollWait(poller.epfd, events, -1)
+		if n == -1 {
+			if errno == unix.EINTR {
+				continue
+			}
+			return false, errno
+		}
+		if n == 0 {
+			// If there are no events, try again.
+			continue
+		}
+		if n > 6 {
+			// This should never happen. More events were returned than should be possible.
+			return false, errors.New("epoll_wait returned more events than I know what to do with")
+		}
+		ready := events[:n]
+		epollhup := false
+		epollerr := false
+		epollin := false
+		for _, event := range ready {
+			if event.Fd == int32(poller.fd) {
+				if event.Events&unix.EPOLLHUP != 0 {
+					// This should not happen, but if it does, treat it as a wakeup.
+					epollhup = true
+				}
+				if event.Events&unix.EPOLLERR != 0 {
+					// If an error is waiting on the file descriptor, we should pretend
+					// something is ready to read, and let unix.Read pick up the error.
+					epollerr = true
+				}
+				if event.Events&unix.EPOLLIN != 0 {
+					// There is data to read.
+					epollin = true
+				}
+			}
+			if event.Fd == int32(poller.pipe[0]) {
+				if event.Events&unix.EPOLLHUP != 0 {
+					// Write pipe descriptor was closed, by us. This means we're closing down the
+					// watcher, and we should wake up.
+				}
+				if event.Events&unix.EPOLLERR != 0 {
+					// If an error is waiting on the pipe file descriptor.
+					// This is an absolute mystery, and should never ever happen.
+					return false, errors.New("Error on the pipe descriptor.")
+				}
+				if event.Events&unix.EPOLLIN != 0 {
+					// This is a regular wakeup, so we have to clear the buffer.
+					err := poller.clearWake()
+					if err != nil {
+						return false, err
+					}
+				}
+			}
+		}
+
+		if epollhup || epollerr || epollin {
+			return true, nil
+		}
+		return false, nil
+	}
+}
+
+// Close the write end of the poller.
+func (poller *fdPoller) wake() error {
+	buf := make([]byte, 1)
+	n, errno := unix.Write(poller.pipe[1], buf)
+	if n == -1 {
+		if errno == unix.EAGAIN {
+			// Buffer is full, poller will wake.
+			return nil
+		}
+		return errno
+	}
+	return nil
+}
+
+func (poller *fdPoller) clearWake() error {
+	// You have to be woken up a LOT in order to get to 100!
+	buf := make([]byte, 100)
+	n, errno := unix.Read(poller.pipe[0], buf)
+	if n == -1 {
+		if errno == unix.EAGAIN {
+			// Buffer is empty, someone else cleared our wake.
+			return nil
+		}
+		return errno
+	}
+	return nil
+}
+
+// Close all poller file descriptors, but not the one passed to it.
+func (poller *fdPoller) close() {
+	if poller.pipe[1] != -1 {
+		unix.Close(poller.pipe[1])
+	}
+	if poller.pipe[0] != -1 {
+		unix.Close(poller.pipe[0])
+	}
+	if poller.epfd != -1 {
+		unix.Close(poller.epfd)
+	}
+}
diff --git a/vendor/github.com/fsnotify/fsnotify/kqueue.go b/vendor/github.com/fsnotify/fsnotify/kqueue.go
new file mode 100644
index 0000000..c2b4acb
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/kqueue.go
@@ -0,0 +1,503 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd openbsd netbsd dragonfly darwin
+
+package fsnotify
+
+import (
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct {
+	Events chan Event
+	Errors chan error
+	done   chan bool // Channel for sending a "quit message" to the reader goroutine
+
+	kq int // File descriptor (as returned by the kqueue() syscall).
+
+	mu              sync.Mutex        // Protects access to watcher data
+	watches         map[string]int    // Map of watched file descriptors (key: path).
+	externalWatches map[string]bool   // Map of watches added by user of the library.
+	dirFlags        map[string]uint32 // Map of watched directories to fflags used in kqueue.
+	paths           map[int]pathInfo  // Map file descriptors to path names for processing kqueue events.
+	fileExists      map[string]bool   // Keep track of if we know this file exists (to stop duplicate create events).
+	isClosed        bool              // Set to true when Close() is first called
+}
+
+type pathInfo struct {
+	name  string
+	isDir bool
+}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+	kq, err := kqueue()
+	if err != nil {
+		return nil, err
+	}
+
+	w := &Watcher{
+		kq:              kq,
+		watches:         make(map[string]int),
+		dirFlags:        make(map[string]uint32),
+		paths:           make(map[int]pathInfo),
+		fileExists:      make(map[string]bool),
+		externalWatches: make(map[string]bool),
+		Events:          make(chan Event),
+		Errors:          make(chan error),
+		done:            make(chan bool),
+	}
+
+	go w.readEvents()
+	return w, nil
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+	w.mu.Lock()
+	if w.isClosed {
+		w.mu.Unlock()
+		return nil
+	}
+	w.isClosed = true
+	w.mu.Unlock()
+
+	// copy paths to remove while locked
+	w.mu.Lock()
+	var pathsToRemove = make([]string, 0, len(w.watches))
+	for name := range w.watches {
+		pathsToRemove = append(pathsToRemove, name)
+	}
+	w.mu.Unlock()
+	// unlock before calling Remove, which also locks
+
+	var err error
+	for _, name := range pathsToRemove {
+		if e := w.Remove(name); e != nil && err == nil {
+			err = e
+		}
+	}
+
+	// Send "quit" message to the reader goroutine:
+	w.done <- true
+
+	return nil
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+	w.mu.Lock()
+	w.externalWatches[name] = true
+	w.mu.Unlock()
+	_, err := w.addWatch(name, noteAllEvents)
+	return err
+}
+
+// Remove stops watching the the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+	name = filepath.Clean(name)
+	w.mu.Lock()
+	watchfd, ok := w.watches[name]
+	w.mu.Unlock()
+	if !ok {
+		return fmt.Errorf("can't remove non-existent kevent watch for: %s", name)
+	}
+
+	const registerRemove = unix.EV_DELETE
+	if err := register(w.kq, []int{watchfd}, registerRemove, 0); err != nil {
+		return err
+	}
+
+	unix.Close(watchfd)
+
+	w.mu.Lock()
+	isDir := w.paths[watchfd].isDir
+	delete(w.watches, name)
+	delete(w.paths, watchfd)
+	delete(w.dirFlags, name)
+	w.mu.Unlock()
+
+	// Find all watched paths that are in this directory that are not external.
+	if isDir {
+		var pathsToRemove []string
+		w.mu.Lock()
+		for _, path := range w.paths {
+			wdir, _ := filepath.Split(path.name)
+			if filepath.Clean(wdir) == name {
+				if !w.externalWatches[path.name] {
+					pathsToRemove = append(pathsToRemove, path.name)
+				}
+			}
+		}
+		w.mu.Unlock()
+		for _, name := range pathsToRemove {
+			// Since these are internal, not much sense in propagating error
+			// to the user, as that will just confuse them with an error about
+			// a path they did not explicitly watch themselves.
+			w.Remove(name)
+		}
+	}
+
+	return nil
+}
+
+// Watch all events (except NOTE_EXTEND, NOTE_LINK, NOTE_REVOKE)
+const noteAllEvents = unix.NOTE_DELETE | unix.NOTE_WRITE | unix.NOTE_ATTRIB | unix.NOTE_RENAME
+
+// keventWaitTime to block on each read from kevent
+var keventWaitTime = durationToTimespec(100 * time.Millisecond)
+
+// addWatch adds name to the watched file set.
+// The flags are interpreted as described in kevent(2).
+// Returns the real path to the file which was added, if any, which may be different from the one passed in the case of symlinks.
+func (w *Watcher) addWatch(name string, flags uint32) (string, error) {
+	var isDir bool
+	// Make ./name and name equivalent
+	name = filepath.Clean(name)
+
+	w.mu.Lock()
+	if w.isClosed {
+		w.mu.Unlock()
+		return "", errors.New("kevent instance already closed")
+	}
+	watchfd, alreadyWatching := w.watches[name]
+	// We already have a watch, but we can still override flags.
+	if alreadyWatching {
+		isDir = w.paths[watchfd].isDir
+	}
+	w.mu.Unlock()
+
+	if !alreadyWatching {
+		fi, err := os.Lstat(name)
+		if err != nil {
+			return "", err
+		}
+
+		// Don't watch sockets.
+		if fi.Mode()&os.ModeSocket == os.ModeSocket {
+			return "", nil
+		}
+
+		// Don't watch named pipes.
+		if fi.Mode()&os.ModeNamedPipe == os.ModeNamedPipe {
+			return "", nil
+		}
+
+		// Follow Symlinks
+		// Unfortunately, Linux can add bogus symlinks to watch list without
+		// issue, and Windows can't do symlinks period (AFAIK). To  maintain
+		// consistency, we will act like everything is fine. There will simply
+		// be no file events for broken symlinks.
+		// Hence the returns of nil on errors.
+		if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
+			name, err = filepath.EvalSymlinks(name)
+			if err != nil {
+				return "", nil
+			}
+
+			w.mu.Lock()
+			_, alreadyWatching = w.watches[name]
+			w.mu.Unlock()
+
+			if alreadyWatching {
+				return name, nil
+			}
+
+			fi, err = os.Lstat(name)
+			if err != nil {
+				return "", nil
+			}
+		}
+
+		watchfd, err = unix.Open(name, openMode, 0700)
+		if watchfd == -1 {
+			return "", err
+		}
+
+		isDir = fi.IsDir()
+	}
+
+	const registerAdd = unix.EV_ADD | unix.EV_CLEAR | unix.EV_ENABLE
+	if err := register(w.kq, []int{watchfd}, registerAdd, flags); err != nil {
+		unix.Close(watchfd)
+		return "", err
+	}
+
+	if !alreadyWatching {
+		w.mu.Lock()
+		w.watches[name] = watchfd
+		w.paths[watchfd] = pathInfo{name: name, isDir: isDir}
+		w.mu.Unlock()
+	}
+
+	if isDir {
+		// Watch the directory if it has not been watched before,
+		// or if it was watched before, but perhaps only a NOTE_DELETE (watchDirectoryFiles)
+		w.mu.Lock()
+
+		watchDir := (flags&unix.NOTE_WRITE) == unix.NOTE_WRITE &&
+			(!alreadyWatching || (w.dirFlags[name]&unix.NOTE_WRITE) != unix.NOTE_WRITE)
+		// Store flags so this watch can be updated later
+		w.dirFlags[name] = flags
+		w.mu.Unlock()
+
+		if watchDir {
+			if err := w.watchDirectoryFiles(name); err != nil {
+				return "", err
+			}
+		}
+	}
+	return name, nil
+}
+
+// readEvents reads from kqueue and converts the received kevents into
+// Event values that it sends down the Events channel.
+func (w *Watcher) readEvents() {
+	eventBuffer := make([]unix.Kevent_t, 10)
+
+	for {
+		// See if there is a message on the "done" channel
+		select {
+		case <-w.done:
+			err := unix.Close(w.kq)
+			if err != nil {
+				w.Errors <- err
+			}
+			close(w.Events)
+			close(w.Errors)
+			return
+		default:
+		}
+
+		// Get new events
+		kevents, err := read(w.kq, eventBuffer, &keventWaitTime)
+		// EINTR is okay, the syscall was interrupted before timeout expired.
+		if err != nil && err != unix.EINTR {
+			w.Errors <- err
+			continue
+		}
+
+		// Flush the events we received to the Events channel
+		for len(kevents) > 0 {
+			kevent := &kevents[0]
+			watchfd := int(kevent.Ident)
+			mask := uint32(kevent.Fflags)
+			w.mu.Lock()
+			path := w.paths[watchfd]
+			w.mu.Unlock()
+			event := newEvent(path.name, mask)
+
+			if path.isDir && !(event.Op&Remove == Remove) {
+				// Double check to make sure the directory exists. This can happen when
+				// we do a rm -fr on a recursively watched folders and we receive a
+				// modification event first but the folder has been deleted and later
+				// receive the delete event
+				if _, err := os.Lstat(event.Name); os.IsNotExist(err) {
+					// mark is as delete event
+					event.Op |= Remove
+				}
+			}
+
+			if event.Op&Rename == Rename || event.Op&Remove == Remove {
+				w.Remove(event.Name)
+				w.mu.Lock()
+				delete(w.fileExists, event.Name)
+				w.mu.Unlock()
+			}
+
+			if path.isDir && event.Op&Write == Write && !(event.Op&Remove == Remove) {
+				w.sendDirectoryChangeEvents(event.Name)
+			} else {
+				// Send the event on the Events channel
+				w.Events <- event
+			}
+
+			if event.Op&Remove == Remove {
+				// Look for a file that may have overwritten this.
+				// For example, mv f1 f2 will delete f2, then create f2.
+				if path.isDir {
+					fileDir := filepath.Clean(event.Name)
+					w.mu.Lock()
+					_, found := w.watches[fileDir]
+					w.mu.Unlock()
+					if found {
+						// make sure the directory exists before we watch for changes. When we
+						// do a recursive watch and perform rm -fr, the parent directory might
+						// have gone missing, ignore the missing directory and let the
+						// upcoming delete event remove the watch from the parent directory.
+						if _, err := os.Lstat(fileDir); err == nil {
+							w.sendDirectoryChangeEvents(fileDir)
+						}
+					}
+				} else {
+					filePath := filepath.Clean(event.Name)
+					if fileInfo, err := os.Lstat(filePath); err == nil {
+						w.sendFileCreatedEventIfNew(filePath, fileInfo)
+					}
+				}
+			}
+
+			// Move to next event
+			kevents = kevents[1:]
+		}
+	}
+}
+
+// newEvent returns an platform-independent Event based on kqueue Fflags.
+func newEvent(name string, mask uint32) Event {
+	e := Event{Name: name}
+	if mask&unix.NOTE_DELETE == unix.NOTE_DELETE {
+		e.Op |= Remove
+	}
+	if mask&unix.NOTE_WRITE == unix.NOTE_WRITE {
+		e.Op |= Write
+	}
+	if mask&unix.NOTE_RENAME == unix.NOTE_RENAME {
+		e.Op |= Rename
+	}
+	if mask&unix.NOTE_ATTRIB == unix.NOTE_ATTRIB {
+		e.Op |= Chmod
+	}
+	return e
+}
+
+func newCreateEvent(name string) Event {
+	return Event{Name: name, Op: Create}
+}
+
+// watchDirectoryFiles to mimic inotify when adding a watch on a directory
+func (w *Watcher) watchDirectoryFiles(dirPath string) error {
+	// Get all files
+	files, err := ioutil.ReadDir(dirPath)
+	if err != nil {
+		return err
+	}
+
+	for _, fileInfo := range files {
+		filePath := filepath.Join(dirPath, fileInfo.Name())
+		filePath, err = w.internalWatch(filePath, fileInfo)
+		if err != nil {
+			return err
+		}
+
+		w.mu.Lock()
+		w.fileExists[filePath] = true
+		w.mu.Unlock()
+	}
+
+	return nil
+}
+
+// sendDirectoryEvents searches the directory for newly created files
+// and sends them over the event channel. This functionality is to have
+// the BSD version of fsnotify match Linux inotify which provides a
+// create event for files created in a watched directory.
+func (w *Watcher) sendDirectoryChangeEvents(dirPath string) {
+	// Get all files
+	files, err := ioutil.ReadDir(dirPath)
+	if err != nil {
+		w.Errors <- err
+	}
+
+	// Search for new files
+	for _, fileInfo := range files {
+		filePath := filepath.Join(dirPath, fileInfo.Name())
+		err := w.sendFileCreatedEventIfNew(filePath, fileInfo)
+
+		if err != nil {
+			return
+		}
+	}
+}
+
+// sendFileCreatedEvent sends a create event if the file isn't already being tracked.
+func (w *Watcher) sendFileCreatedEventIfNew(filePath string, fileInfo os.FileInfo) (err error) {
+	w.mu.Lock()
+	_, doesExist := w.fileExists[filePath]
+	w.mu.Unlock()
+	if !doesExist {
+		// Send create event
+		w.Events <- newCreateEvent(filePath)
+	}
+
+	// like watchDirectoryFiles (but without doing another ReadDir)
+	filePath, err = w.internalWatch(filePath, fileInfo)
+	if err != nil {
+		return err
+	}
+
+	w.mu.Lock()
+	w.fileExists[filePath] = true
+	w.mu.Unlock()
+
+	return nil
+}
+
+func (w *Watcher) internalWatch(name string, fileInfo os.FileInfo) (string, error) {
+	if fileInfo.IsDir() {
+		// mimic Linux providing delete events for subdirectories
+		// but preserve the flags used if currently watching subdirectory
+		w.mu.Lock()
+		flags := w.dirFlags[name]
+		w.mu.Unlock()
+
+		flags |= unix.NOTE_DELETE | unix.NOTE_RENAME
+		return w.addWatch(name, flags)
+	}
+
+	// watch file to mimic Linux inotify
+	return w.addWatch(name, noteAllEvents)
+}
+
+// kqueue creates a new kernel event queue and returns a descriptor.
+func kqueue() (kq int, err error) {
+	kq, err = unix.Kqueue()
+	if kq == -1 {
+		return kq, err
+	}
+	return kq, nil
+}
+
+// register events with the queue
+func register(kq int, fds []int, flags int, fflags uint32) error {
+	changes := make([]unix.Kevent_t, len(fds))
+
+	for i, fd := range fds {
+		// SetKevent converts int to the platform-specific types:
+		unix.SetKevent(&changes[i], fd, unix.EVFILT_VNODE, flags)
+		changes[i].Fflags = fflags
+	}
+
+	// register the events
+	success, err := unix.Kevent(kq, changes, nil, nil)
+	if success == -1 {
+		return err
+	}
+	return nil
+}
+
+// read retrieves pending events, or waits until an event occurs.
+// A timeout of nil blocks indefinitely, while 0 polls the queue.
+func read(kq int, events []unix.Kevent_t, timeout *unix.Timespec) ([]unix.Kevent_t, error) {
+	n, err := unix.Kevent(kq, nil, events, timeout)
+	if err != nil {
+		return nil, err
+	}
+	return events[0:n], nil
+}
+
+// durationToTimespec prepares a timeout value
+func durationToTimespec(d time.Duration) unix.Timespec {
+	return unix.NsecToTimespec(d.Nanoseconds())
+}
diff --git a/vendor/github.com/fsnotify/fsnotify/open_mode_bsd.go b/vendor/github.com/fsnotify/fsnotify/open_mode_bsd.go
new file mode 100644
index 0000000..7d8de14
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/open_mode_bsd.go
@@ -0,0 +1,11 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd openbsd netbsd dragonfly
+
+package fsnotify
+
+import "golang.org/x/sys/unix"
+
+const openMode = unix.O_NONBLOCK | unix.O_RDONLY
diff --git a/vendor/github.com/fsnotify/fsnotify/open_mode_darwin.go b/vendor/github.com/fsnotify/fsnotify/open_mode_darwin.go
new file mode 100644
index 0000000..9139e17
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/open_mode_darwin.go
@@ -0,0 +1,12 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin
+
+package fsnotify
+
+import "golang.org/x/sys/unix"
+
+// note: this constant is not defined on BSD
+const openMode = unix.O_EVTONLY
diff --git a/vendor/github.com/fsnotify/fsnotify/windows.go b/vendor/github.com/fsnotify/fsnotify/windows.go
new file mode 100644
index 0000000..c836bdb
--- /dev/null
+++ b/vendor/github.com/fsnotify/fsnotify/windows.go
@@ -0,0 +1,561 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows
+
+package fsnotify
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"sync"
+	"syscall"
+	"unsafe"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct {
+	Events   chan Event
+	Errors   chan error
+	isClosed bool           // Set to true when Close() is first called
+	mu       sync.Mutex     // Map access
+	port     syscall.Handle // Handle to completion port
+	watches  watchMap       // Map of watches (key: i-number)
+	input    chan *input    // Inputs to the reader are sent on this channel
+	quit     chan chan<- error
+}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+	port, e := syscall.CreateIoCompletionPort(syscall.InvalidHandle, 0, 0, 0)
+	if e != nil {
+		return nil, os.NewSyscallError("CreateIoCompletionPort", e)
+	}
+	w := &Watcher{
+		port:    port,
+		watches: make(watchMap),
+		input:   make(chan *input, 1),
+		Events:  make(chan Event, 50),
+		Errors:  make(chan error),
+		quit:    make(chan chan<- error, 1),
+	}
+	go w.readEvents()
+	return w, nil
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+	if w.isClosed {
+		return nil
+	}
+	w.isClosed = true
+
+	// Send "quit" message to the reader goroutine
+	ch := make(chan error)
+	w.quit <- ch
+	if err := w.wakeupReader(); err != nil {
+		return err
+	}
+	return <-ch
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+	if w.isClosed {
+		return errors.New("watcher already closed")
+	}
+	in := &input{
+		op:    opAddWatch,
+		path:  filepath.Clean(name),
+		flags: sysFSALLEVENTS,
+		reply: make(chan error),
+	}
+	w.input <- in
+	if err := w.wakeupReader(); err != nil {
+		return err
+	}
+	return <-in.reply
+}
+
+// Remove stops watching the the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+	in := &input{
+		op:    opRemoveWatch,
+		path:  filepath.Clean(name),
+		reply: make(chan error),
+	}
+	w.input <- in
+	if err := w.wakeupReader(); err != nil {
+		return err
+	}
+	return <-in.reply
+}
+
+const (
+	// Options for AddWatch
+	sysFSONESHOT = 0x80000000
+	sysFSONLYDIR = 0x1000000
+
+	// Events
+	sysFSACCESS     = 0x1
+	sysFSALLEVENTS  = 0xfff
+	sysFSATTRIB     = 0x4
+	sysFSCLOSE      = 0x18
+	sysFSCREATE     = 0x100
+	sysFSDELETE     = 0x200
+	sysFSDELETESELF = 0x400
+	sysFSMODIFY     = 0x2
+	sysFSMOVE       = 0xc0
+	sysFSMOVEDFROM  = 0x40
+	sysFSMOVEDTO    = 0x80
+	sysFSMOVESELF   = 0x800
+
+	// Special events
+	sysFSIGNORED   = 0x8000
+	sysFSQOVERFLOW = 0x4000
+)
+
+func newEvent(name string, mask uint32) Event {
+	e := Event{Name: name}
+	if mask&sysFSCREATE == sysFSCREATE || mask&sysFSMOVEDTO == sysFSMOVEDTO {
+		e.Op |= Create
+	}
+	if mask&sysFSDELETE == sysFSDELETE || mask&sysFSDELETESELF == sysFSDELETESELF {
+		e.Op |= Remove
+	}
+	if mask&sysFSMODIFY == sysFSMODIFY {
+		e.Op |= Write
+	}
+	if mask&sysFSMOVE == sysFSMOVE || mask&sysFSMOVESELF == sysFSMOVESELF || mask&sysFSMOVEDFROM == sysFSMOVEDFROM {
+		e.Op |= Rename
+	}
+	if mask&sysFSATTRIB == sysFSATTRIB {
+		e.Op |= Chmod
+	}
+	return e
+}
+
+const (
+	opAddWatch = iota
+	opRemoveWatch
+)
+
+const (
+	provisional uint64 = 1 << (32 + iota)
+)
+
+type input struct {
+	op    int
+	path  string
+	flags uint32
+	reply chan error
+}
+
+type inode struct {
+	handle syscall.Handle
+	volume uint32
+	index  uint64
+}
+
+type watch struct {
+	ov     syscall.Overlapped
+	ino    *inode            // i-number
+	path   string            // Directory path
+	mask   uint64            // Directory itself is being watched with these notify flags
+	names  map[string]uint64 // Map of names being watched and their notify flags
+	rename string            // Remembers the old name while renaming a file
+	buf    [4096]byte
+}
+
+type indexMap map[uint64]*watch
+type watchMap map[uint32]indexMap
+
+func (w *Watcher) wakeupReader() error {
+	e := syscall.PostQueuedCompletionStatus(w.port, 0, 0, nil)
+	if e != nil {
+		return os.NewSyscallError("PostQueuedCompletionStatus", e)
+	}
+	return nil
+}
+
+func getDir(pathname string) (dir string, err error) {
+	attr, e := syscall.GetFileAttributes(syscall.StringToUTF16Ptr(pathname))
+	if e != nil {
+		return "", os.NewSyscallError("GetFileAttributes", e)
+	}
+	if attr&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
+		dir = pathname
+	} else {
+		dir, _ = filepath.Split(pathname)
+		dir = filepath.Clean(dir)
+	}
+	return
+}
+
+func getIno(path string) (ino *inode, err error) {
+	h, e := syscall.CreateFile(syscall.StringToUTF16Ptr(path),
+		syscall.FILE_LIST_DIRECTORY,
+		syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE,
+		nil, syscall.OPEN_EXISTING,
+		syscall.FILE_FLAG_BACKUP_SEMANTICS|syscall.FILE_FLAG_OVERLAPPED, 0)
+	if e != nil {
+		return nil, os.NewSyscallError("CreateFile", e)
+	}
+	var fi syscall.ByHandleFileInformation
+	if e = syscall.GetFileInformationByHandle(h, &fi); e != nil {
+		syscall.CloseHandle(h)
+		return nil, os.NewSyscallError("GetFileInformationByHandle", e)
+	}
+	ino = &inode{
+		handle: h,
+		volume: fi.VolumeSerialNumber,
+		index:  uint64(fi.FileIndexHigh)<<32 | uint64(fi.FileIndexLow),
+	}
+	return ino, nil
+}
+
+// Must run within the I/O thread.
+func (m watchMap) get(ino *inode) *watch {
+	if i := m[ino.volume]; i != nil {
+		return i[ino.index]
+	}
+	return nil
+}
+
+// Must run within the I/O thread.
+func (m watchMap) set(ino *inode, watch *watch) {
+	i := m[ino.volume]
+	if i == nil {
+		i = make(indexMap)
+		m[ino.volume] = i
+	}
+	i[ino.index] = watch
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) addWatch(pathname string, flags uint64) error {
+	dir, err := getDir(pathname)
+	if err != nil {
+		return err
+	}
+	if flags&sysFSONLYDIR != 0 && pathname != dir {
+		return nil
+	}
+	ino, err := getIno(dir)
+	if err != nil {
+		return err
+	}
+	w.mu.Lock()
+	watchEntry := w.watches.get(ino)
+	w.mu.Unlock()
+	if watchEntry == nil {
+		if _, e := syscall.CreateIoCompletionPort(ino.handle, w.port, 0, 0); e != nil {
+			syscall.CloseHandle(ino.handle)
+			return os.NewSyscallError("CreateIoCompletionPort", e)
+		}
+		watchEntry = &watch{
+			ino:   ino,
+			path:  dir,
+			names: make(map[string]uint64),
+		}
+		w.mu.Lock()
+		w.watches.set(ino, watchEntry)
+		w.mu.Unlock()
+		flags |= provisional
+	} else {
+		syscall.CloseHandle(ino.handle)
+	}
+	if pathname == dir {
+		watchEntry.mask |= flags
+	} else {
+		watchEntry.names[filepath.Base(pathname)] |= flags
+	}
+	if err = w.startRead(watchEntry); err != nil {
+		return err
+	}
+	if pathname == dir {
+		watchEntry.mask &= ^provisional
+	} else {
+		watchEntry.names[filepath.Base(pathname)] &= ^provisional
+	}
+	return nil
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) remWatch(pathname string) error {
+	dir, err := getDir(pathname)
+	if err != nil {
+		return err
+	}
+	ino, err := getIno(dir)
+	if err != nil {
+		return err
+	}
+	w.mu.Lock()
+	watch := w.watches.get(ino)
+	w.mu.Unlock()
+	if watch == nil {
+		return fmt.Errorf("can't remove non-existent watch for: %s", pathname)
+	}
+	if pathname == dir {
+		w.sendEvent(watch.path, watch.mask&sysFSIGNORED)
+		watch.mask = 0
+	} else {
+		name := filepath.Base(pathname)
+		w.sendEvent(watch.path+"\\"+name, watch.names[name]&sysFSIGNORED)
+		delete(watch.names, name)
+	}
+	return w.startRead(watch)
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) deleteWatch(watch *watch) {
+	for name, mask := range watch.names {
+		if mask&provisional == 0 {
+			w.sendEvent(watch.path+"\\"+name, mask&sysFSIGNORED)
+		}
+		delete(watch.names, name)
+	}
+	if watch.mask != 0 {
+		if watch.mask&provisional == 0 {
+			w.sendEvent(watch.path, watch.mask&sysFSIGNORED)
+		}
+		watch.mask = 0
+	}
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) startRead(watch *watch) error {
+	if e := syscall.CancelIo(watch.ino.handle); e != nil {
+		w.Errors <- os.NewSyscallError("CancelIo", e)
+		w.deleteWatch(watch)
+	}
+	mask := toWindowsFlags(watch.mask)
+	for _, m := range watch.names {
+		mask |= toWindowsFlags(m)
+	}
+	if mask == 0 {
+		if e := syscall.CloseHandle(watch.ino.handle); e != nil {
+			w.Errors <- os.NewSyscallError("CloseHandle", e)
+		}
+		w.mu.Lock()
+		delete(w.watches[watch.ino.volume], watch.ino.index)
+		w.mu.Unlock()
+		return nil
+	}
+	e := syscall.ReadDirectoryChanges(watch.ino.handle, &watch.buf[0],
+		uint32(unsafe.Sizeof(watch.buf)), false, mask, nil, &watch.ov, 0)
+	if e != nil {
+		err := os.NewSyscallError("ReadDirectoryChanges", e)
+		if e == syscall.ERROR_ACCESS_DENIED && watch.mask&provisional == 0 {
+			// Watched directory was probably removed
+			if w.sendEvent(watch.path, watch.mask&sysFSDELETESELF) {
+				if watch.mask&sysFSONESHOT != 0 {
+					watch.mask = 0
+				}
+			}
+			err = nil
+		}
+		w.deleteWatch(watch)
+		w.startRead(watch)
+		return err
+	}
+	return nil
+}
+
+// readEvents reads from the I/O completion port, converts the
+// received events into Event objects and sends them via the Events channel.
+// Entry point to the I/O thread.
+func (w *Watcher) readEvents() {
+	var (
+		n, key uint32
+		ov     *syscall.Overlapped
+	)
+	runtime.LockOSThread()
+
+	for {
+		e := syscall.GetQueuedCompletionStatus(w.port, &n, &key, &ov, syscall.INFINITE)
+		watch := (*watch)(unsafe.Pointer(ov))
+
+		if watch == nil {
+			select {
+			case ch := <-w.quit:
+				w.mu.Lock()
+				var indexes []indexMap
+				for _, index := range w.watches {
+					indexes = append(indexes, index)
+				}
+				w.mu.Unlock()
+				for _, index := range indexes {
+					for _, watch := range index {
+						w.deleteWatch(watch)
+						w.startRead(watch)
+					}
+				}
+				var err error
+				if e := syscall.CloseHandle(w.port); e != nil {
+					err = os.NewSyscallError("CloseHandle", e)
+				}
+				close(w.Events)
+				close(w.Errors)
+				ch <- err
+				return
+			case in := <-w.input:
+				switch in.op {
+				case opAddWatch:
+					in.reply <- w.addWatch(in.path, uint64(in.flags))
+				case opRemoveWatch:
+					in.reply <- w.remWatch(in.path)
+				}
+			default:
+			}
+			continue
+		}
+
+		switch e {
+		case syscall.ERROR_MORE_DATA:
+			if watch == nil {
+				w.Errors <- errors.New("ERROR_MORE_DATA has unexpectedly null lpOverlapped buffer")
+			} else {
+				// The i/o succeeded but the buffer is full.
+				// In theory we should be building up a full packet.
+				// In practice we can get away with just carrying on.
+				n = uint32(unsafe.Sizeof(watch.buf))
+			}
+		case syscall.ERROR_ACCESS_DENIED:
+			// Watched directory was probably removed
+			w.sendEvent(watch.path, watch.mask&sysFSDELETESELF)
+			w.deleteWatch(watch)
+			w.startRead(watch)
+			continue
+		case syscall.ERROR_OPERATION_ABORTED:
+			// CancelIo was called on this handle
+			continue
+		default:
+			w.Errors <- os.NewSyscallError("GetQueuedCompletionPort", e)
+			continue
+		case nil:
+		}
+
+		var offset uint32
+		for {
+			if n == 0 {
+				w.Events <- newEvent("", sysFSQOVERFLOW)
+				w.Errors <- errors.New("short read in readEvents()")
+				break
+			}
+
+			// Point "raw" to the event in the buffer
+			raw := (*syscall.FileNotifyInformation)(unsafe.Pointer(&watch.buf[offset]))
+			buf := (*[syscall.MAX_PATH]uint16)(unsafe.Pointer(&raw.FileName))
+			name := syscall.UTF16ToString(buf[:raw.FileNameLength/2])
+			fullname := watch.path + "\\" + name
+
+			var mask uint64
+			switch raw.Action {
+			case syscall.FILE_ACTION_REMOVED:
+				mask = sysFSDELETESELF
+			case syscall.FILE_ACTION_MODIFIED:
+				mask = sysFSMODIFY
+			case syscall.FILE_ACTION_RENAMED_OLD_NAME:
+				watch.rename = name
+			case syscall.FILE_ACTION_RENAMED_NEW_NAME:
+				if watch.names[watch.rename] != 0 {
+					watch.names[name] |= watch.names[watch.rename]
+					delete(watch.names, watch.rename)
+					mask = sysFSMOVESELF
+				}
+			}
+
+			sendNameEvent := func() {
+				if w.sendEvent(fullname, watch.names[name]&mask) {
+					if watch.names[name]&sysFSONESHOT != 0 {
+						delete(watch.names, name)
+					}
+				}
+			}
+			if raw.Action != syscall.FILE_ACTION_RENAMED_NEW_NAME {
+				sendNameEvent()
+			}
+			if raw.Action == syscall.FILE_ACTION_REMOVED {
+				w.sendEvent(fullname, watch.names[name]&sysFSIGNORED)
+				delete(watch.names, name)
+			}
+			if w.sendEvent(fullname, watch.mask&toFSnotifyFlags(raw.Action)) {
+				if watch.mask&sysFSONESHOT != 0 {
+					watch.mask = 0
+				}
+			}
+			if raw.Action == syscall.FILE_ACTION_RENAMED_NEW_NAME {
+				fullname = watch.path + "\\" + watch.rename
+				sendNameEvent()
+			}
+
+			// Move to the next event in the buffer
+			if raw.NextEntryOffset == 0 {
+				break
+			}
+			offset += raw.NextEntryOffset
+
+			// Error!
+			if offset >= n {
+				w.Errors <- errors.New("Windows system assumed buffer larger than it is, events have likely been missed.")
+				break
+			}
+		}
+
+		if err := w.startRead(watch); err != nil {
+			w.Errors <- err
+		}
+	}
+}
+
+func (w *Watcher) sendEvent(name string, mask uint64) bool {
+	if mask == 0 {
+		return false
+	}
+	event := newEvent(name, uint32(mask))
+	select {
+	case ch := <-w.quit:
+		w.quit <- ch
+	case w.Events <- event:
+	}
+	return true
+}
+
+func toWindowsFlags(mask uint64) uint32 {
+	var m uint32
+	if mask&sysFSACCESS != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_LAST_ACCESS
+	}
+	if mask&sysFSMODIFY != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_LAST_WRITE
+	}
+	if mask&sysFSATTRIB != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_ATTRIBUTES
+	}
+	if mask&(sysFSMOVE|sysFSCREATE|sysFSDELETE) != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_FILE_NAME | syscall.FILE_NOTIFY_CHANGE_DIR_NAME
+	}
+	return m
+}
+
+func toFSnotifyFlags(action uint32) uint64 {
+	switch action {
+	case syscall.FILE_ACTION_ADDED:
+		return sysFSCREATE
+	case syscall.FILE_ACTION_REMOVED:
+		return sysFSDELETE
+	case syscall.FILE_ACTION_MODIFIED:
+		return sysFSMODIFY
+	case syscall.FILE_ACTION_RENAMED_OLD_NAME:
+		return sysFSMOVEDFROM
+	case syscall.FILE_ACTION_RENAMED_NEW_NAME:
+		return sysFSMOVEDTO
+	}
+	return 0
+}
diff --git a/vendor/github.com/google/go-github/LICENSE b/vendor/github.com/google/go-github/LICENSE
new file mode 100644
index 0000000..5582e4a
--- /dev/null
+++ b/vendor/github.com/google/go-github/LICENSE
@@ -0,0 +1,341 @@
+Copyright (c) 2013 The go-github AUTHORS. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------
+
+Some documentation is taken from the GitHub Developer site
+<http://developer.github.com/>, which is available under the following Creative
+Commons Attribution 3.0 License.  This applies only to the go-github source
+code and would not apply to any compiled binaries.
+
+THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS CREATIVE
+COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). THE WORK IS PROTECTED BY
+COPYRIGHT AND/OR OTHER APPLICABLE LAW. ANY USE OF THE WORK OTHER THAN AS
+AUTHORIZED UNDER THIS LICENSE OR COPYRIGHT LAW IS PROHIBITED.
+
+BY EXERCISING ANY RIGHTS TO THE WORK PROVIDED HERE, YOU ACCEPT AND AGREE
+TO BE BOUND BY THE TERMS OF THIS LICENSE. TO THE EXTENT THIS LICENSE MAY
+BE CONSIDERED TO BE A CONTRACT, THE LICENSOR GRANTS YOU THE RIGHTS
+CONTAINED HERE IN CONSIDERATION OF YOUR ACCEPTANCE OF SUCH TERMS AND
+CONDITIONS.
+
+1. Definitions
+
+ a. "Adaptation" means a work based upon the Work, or upon the Work and
+    other pre-existing works, such as a translation, adaptation,
+    derivative work, arrangement of music or other alterations of a
+    literary or artistic work, or phonogram or performance and includes
+    cinematographic adaptations or any other form in which the Work may be
+    recast, transformed, or adapted including in any form recognizably
+    derived from the original, except that a work that constitutes a
+    Collection will not be considered an Adaptation for the purpose of
+    this License. For the avoidance of doubt, where the Work is a musical
+    work, performance or phonogram, the synchronization of the Work in
+    timed-relation with a moving image ("synching") will be considered an
+    Adaptation for the purpose of this License.
+ b. "Collection" means a collection of literary or artistic works, such as
+    encyclopedias and anthologies, or performances, phonograms or
+    broadcasts, or other works or subject matter other than works listed
+    in Section 1(f) below, which, by reason of the selection and
+    arrangement of their contents, constitute intellectual creations, in
+    which the Work is included in its entirety in unmodified form along
+    with one or more other contributions, each constituting separate and
+    independent works in themselves, which together are assembled into a
+    collective whole. A work that constitutes a Collection will not be
+    considered an Adaptation (as defined above) for the purposes of this
+    License.
+ c. "Distribute" means to make available to the public the original and
+    copies of the Work or Adaptation, as appropriate, through sale or
+    other transfer of ownership.
+ d. "Licensor" means the individual, individuals, entity or entities that
+    offer(s) the Work under the terms of this License.
+ e. "Original Author" means, in the case of a literary or artistic work,
+    the individual, individuals, entity or entities who created the Work
+    or if no individual or entity can be identified, the publisher; and in
+    addition (i) in the case of a performance the actors, singers,
+    musicians, dancers, and other persons who act, sing, deliver, declaim,
+    play in, interpret or otherwise perform literary or artistic works or
+    expressions of folklore; (ii) in the case of a phonogram the producer
+    being the person or legal entity who first fixes the sounds of a
+    performance or other sounds; and, (iii) in the case of broadcasts, the
+    organization that transmits the broadcast.
+ f. "Work" means the literary and/or artistic work offered under the terms
+    of this License including without limitation any production in the
+    literary, scientific and artistic domain, whatever may be the mode or
+    form of its expression including digital form, such as a book,
+    pamphlet and other writing; a lecture, address, sermon or other work
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+    extent it is protected as a copyrightable work; or a work performed by
+    a variety or circus performer to the extent it is not otherwise
+    considered a literary or artistic work.
+ g. "You" means an individual or entity exercising rights under this
+    License who has not previously violated the terms of this License with
+    respect to the Work, or who has received express permission from the
+    Licensor to exercise rights under this License despite a previous
+    violation.
+ h. "Publicly Perform" means to perform public recitations of the Work and
+    to communicate to the public those public recitations, by any means or
+    process, including by wire or wireless means or public digital
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+ i. "Reproduce" means to make copies of the Work by any means including
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+    fixation and reproducing fixations of the Work, including storage of a
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+
+2. Fair Dealing Rights. Nothing in this License is intended to reduce,
+limit, or restrict any uses free from copyright or rights arising from
+limitations or exceptions that are provided for in connection with the
+copyright protection under copyright law or other applicable laws.
+
+3. License Grant. Subject to the terms and conditions of this License,
+Licensor hereby grants You a worldwide, royalty-free, non-exclusive,
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+
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+   iii. Voluntary License Schemes. The Licensor waives the right to
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+The above rights may be exercised in all media and formats whether now
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+such modifications as are technically necessary to exercise the rights in
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+
+4. Restrictions. The license granted in Section 3 above is expressly made
+subject to and limited by the following restrictions:
+
+ a. You may Distribute or Publicly Perform the Work only under the terms
+    of this License. You must include a copy of, or the Uniform Resource
+    Identifier (URI) for, this License with every copy of the Work You
+    Distribute or Publicly Perform. You may not offer or impose any terms
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+    additional rights are deemed to be included in the License; this
+    License is not intended to restrict the license of any rights under
+    applicable law.
+
+
+Creative Commons Notice
+
+    Creative Commons is not a party to this License, and makes no warranty
+    whatsoever in connection with the Work. Creative Commons will not be
+    liable to You or any party on any legal theory for any damages
+    whatsoever, including without limitation any general, special,
+    incidental or consequential damages arising in connection to this
+    license. Notwithstanding the foregoing two (2) sentences, if Creative
+    Commons has expressly identified itself as the Licensor hereunder, it
+    shall have all rights and obligations of Licensor.
+
+    Except for the limited purpose of indicating to the public that the
+    Work is licensed under the CCPL, Creative Commons does not authorize
+    the use by either party of the trademark "Creative Commons" or any
+    related trademark or logo of Creative Commons without the prior
+    written consent of Creative Commons. Any permitted use will be in
+    compliance with Creative Commons' then-current trademark usage
+    guidelines, as may be published on its website or otherwise made
+    available upon request from time to time. For the avoidance of doubt,
+    this trademark restriction does not form part of this License.
+
+    Creative Commons may be contacted at http://creativecommons.org/.
diff --git a/vendor/github.com/google/go-github/github/activity.go b/vendor/github.com/google/go-github/github/activity.go
new file mode 100644
index 0000000..88ad8d2
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/activity.go
@@ -0,0 +1,69 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+// ActivityService handles communication with the activity related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/
+type ActivityService struct {
+	client *Client
+}
+
+// FeedLink represents a link to a related resource.
+type FeedLink struct {
+	HRef *string `json:"href,omitempty"`
+	Type *string `json:"type,omitempty"`
+}
+
+// Feeds represents timeline resources in Atom format.
+type Feeds struct {
+	TimelineURL                 *string  `json:"timeline_url,omitempty"`
+	UserURL                     *string  `json:"user_url,omitempty"`
+	CurrentUserPublicURL        *string  `json:"current_user_public_url,omitempty"`
+	CurrentUserURL              *string  `json:"current_user_url,omitempty"`
+	CurrentUserActorURL         *string  `json:"current_user_actor_url,omitempty"`
+	CurrentUserOrganizationURL  *string  `json:"current_user_organization_url,omitempty"`
+	CurrentUserOrganizationURLs []string `json:"current_user_organization_urls,omitempty"`
+	Links                       *struct {
+		Timeline                 *FeedLink  `json:"timeline,omitempty"`
+		User                     *FeedLink  `json:"user,omitempty"`
+		CurrentUserPublic        *FeedLink  `json:"current_user_public,omitempty"`
+		CurrentUser              *FeedLink  `json:"current_user,omitempty"`
+		CurrentUserActor         *FeedLink  `json:"current_user_actor,omitempty"`
+		CurrentUserOrganization  *FeedLink  `json:"current_user_organization,omitempty"`
+		CurrentUserOrganizations []FeedLink `json:"current_user_organizations,omitempty"`
+	} `json:"_links,omitempty"`
+}
+
+// ListFeeds lists all the feeds available to the authenticated user.
+//
+// GitHub provides several timeline resources in Atom format:
+//     Timeline: The GitHub global public timeline
+//     User: The public timeline for any user, using URI template
+//     Current user public: The public timeline for the authenticated user
+//     Current user: The private timeline for the authenticated user
+//     Current user actor: The private timeline for activity created by the
+//         authenticated user
+//     Current user organizations: The private timeline for the organizations
+//         the authenticated user is a member of.
+//
+// Note: Private feeds are only returned when authenticating via Basic Auth
+// since current feed URIs use the older, non revocable auth tokens.
+func (s *ActivityService) ListFeeds() (*Feeds, *Response, error) {
+	req, err := s.client.NewRequest("GET", "feeds", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	f := &Feeds{}
+	resp, err := s.client.Do(req, f)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return f, resp, nil
+}
diff --git a/vendor/github.com/google/go-github/github/activity_events.go b/vendor/github.com/google/go-github/github/activity_events.go
new file mode 100644
index 0000000..be7e4b2
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/activity_events.go
@@ -0,0 +1,287 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+// Event represents a GitHub event.
+type Event struct {
+	Type       *string          `json:"type,omitempty"`
+	Public     *bool            `json:"public"`
+	RawPayload *json.RawMessage `json:"payload,omitempty"`
+	Repo       *Repository      `json:"repo,omitempty"`
+	Actor      *User            `json:"actor,omitempty"`
+	Org        *Organization    `json:"org,omitempty"`
+	CreatedAt  *time.Time       `json:"created_at,omitempty"`
+	ID         *string          `json:"id,omitempty"`
+}
+
+func (e Event) String() string {
+	return Stringify(e)
+}
+
+// Payload returns the parsed event payload. For recognized event types,
+// a value of the corresponding struct type will be returned.
+func (e *Event) Payload() (payload interface{}) {
+	switch *e.Type {
+	case "CommitCommentEvent":
+		payload = &CommitCommentEvent{}
+	case "CreateEvent":
+		payload = &CreateEvent{}
+	case "DeleteEvent":
+		payload = &DeleteEvent{}
+	case "DeploymentEvent":
+		payload = &DeploymentEvent{}
+	case "DeploymentStatusEvent":
+		payload = &DeploymentStatusEvent{}
+	case "ForkEvent":
+		payload = &ForkEvent{}
+	case "GollumEvent":
+		payload = &GollumEvent{}
+	case "IssueActivityEvent":
+		payload = &IssueActivityEvent{}
+	case "IssueCommentEvent":
+		payload = &IssueCommentEvent{}
+	case "IssuesEvent":
+		payload = &IssuesEvent{}
+	case "MemberEvent":
+		payload = &MemberEvent{}
+	case "MembershipEvent":
+		payload = &MembershipEvent{}
+	case "PageBuildEvent":
+		payload = &PageBuildEvent{}
+	case "PublicEvent":
+		payload = &PublicEvent{}
+	case "PullRequestEvent":
+		payload = &PullRequestEvent{}
+	case "PullRequestReviewCommentEvent":
+		payload = &PullRequestReviewCommentEvent{}
+	case "PushEvent":
+		payload = &PushEvent{}
+	case "ReleaseEvent":
+		payload = &ReleaseEvent{}
+	case "RepositoryEvent":
+		payload = &RepositoryEvent{}
+	case "StatusEvent":
+		payload = &StatusEvent{}
+	case "TeamAddEvent":
+		payload = &TeamAddEvent{}
+	case "WatchEvent":
+		payload = &WatchEvent{}
+	}
+	if err := json.Unmarshal(*e.RawPayload, &payload); err != nil {
+		panic(err.Error())
+	}
+	return payload
+}
+
+// ListEvents drinks from the firehose of all public events across GitHub.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-public-events
+func (s *ActivityService) ListEvents(opt *ListOptions) ([]Event, *Response, error) {
+	u, err := addOptions("events", opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
+
+// ListRepositoryEvents lists events for a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-repository-events
+func (s *ActivityService) ListRepositoryEvents(owner, repo string, opt *ListOptions) ([]Event, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/events", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
+
+// ListIssueEventsForRepository lists issue events for a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-issue-events-for-a-repository
+func (s *ActivityService) ListIssueEventsForRepository(owner, repo string, opt *ListOptions) ([]Event, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/events", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
+
+// ListEventsForRepoNetwork lists public events for a network of repositories.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-public-events-for-a-network-of-repositories
+func (s *ActivityService) ListEventsForRepoNetwork(owner, repo string, opt *ListOptions) ([]Event, *Response, error) {
+	u := fmt.Sprintf("networks/%v/%v/events", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
+
+// ListEventsForOrganization lists public events for an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-public-events-for-an-organization
+func (s *ActivityService) ListEventsForOrganization(org string, opt *ListOptions) ([]Event, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/events", org)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
+
+// ListEventsPerformedByUser lists the events performed by a user. If publicOnly is
+// true, only public events will be returned.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-events-performed-by-a-user
+func (s *ActivityService) ListEventsPerformedByUser(user string, publicOnly bool, opt *ListOptions) ([]Event, *Response, error) {
+	var u string
+	if publicOnly {
+		u = fmt.Sprintf("users/%v/events/public", user)
+	} else {
+		u = fmt.Sprintf("users/%v/events", user)
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
+
+// ListEventsReceivedByUser lists the events received by a user. If publicOnly is
+// true, only public events will be returned.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-events-that-a-user-has-received
+func (s *ActivityService) ListEventsReceivedByUser(user string, publicOnly bool, opt *ListOptions) ([]Event, *Response, error) {
+	var u string
+	if publicOnly {
+		u = fmt.Sprintf("users/%v/received_events/public", user)
+	} else {
+		u = fmt.Sprintf("users/%v/received_events", user)
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
+
+// ListUserEventsForOrganization provides the user’s organization dashboard. You
+// must be authenticated as the user to view this.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/#list-events-for-an-organization
+func (s *ActivityService) ListUserEventsForOrganization(org, user string, opt *ListOptions) ([]Event, *Response, error) {
+	u := fmt.Sprintf("users/%v/events/orgs/%v", user, org)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	events := new([]Event)
+	resp, err := s.client.Do(req, events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *events, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/activity_notifications.go b/vendor/github.com/google/go-github/github/activity_notifications.go
new file mode 100644
index 0000000..290b954
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/activity_notifications.go
@@ -0,0 +1,225 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// Notification identifies a GitHub notification for a user.
+type Notification struct {
+	ID         *string              `json:"id,omitempty"`
+	Repository *Repository          `json:"repository,omitempty"`
+	Subject    *NotificationSubject `json:"subject,omitempty"`
+
+	// Reason identifies the event that triggered the notification.
+	//
+	// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#notification-reasons
+	Reason *string `json:"reason,omitempty"`
+
+	Unread     *bool      `json:"unread,omitempty"`
+	UpdatedAt  *time.Time `json:"updated_at,omitempty"`
+	LastReadAt *time.Time `json:"last_read_at,omitempty"`
+	URL        *string    `json:"url,omitempty"`
+}
+
+// NotificationSubject identifies the subject of a notification.
+type NotificationSubject struct {
+	Title            *string `json:"title,omitempty"`
+	URL              *string `json:"url,omitempty"`
+	LatestCommentURL *string `json:"latest_comment_url,omitempty"`
+	Type             *string `json:"type,omitempty"`
+}
+
+// NotificationListOptions specifies the optional parameters to the
+// ActivityService.ListNotifications method.
+type NotificationListOptions struct {
+	All           bool      `url:"all,omitempty"`
+	Participating bool      `url:"participating,omitempty"`
+	Since         time.Time `url:"since,omitempty"`
+	Before        time.Time `url:"before,omitempty"`
+}
+
+// ListNotifications lists all notifications for the authenticated user.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#list-your-notifications
+func (s *ActivityService) ListNotifications(opt *NotificationListOptions) ([]Notification, *Response, error) {
+	u := fmt.Sprintf("notifications")
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var notifications []Notification
+	resp, err := s.client.Do(req, &notifications)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return notifications, resp, err
+}
+
+// ListRepositoryNotifications lists all notifications in a given repository
+// for the authenticated user.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#list-your-notifications-in-a-repository
+func (s *ActivityService) ListRepositoryNotifications(owner, repo string, opt *NotificationListOptions) ([]Notification, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/notifications", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var notifications []Notification
+	resp, err := s.client.Do(req, &notifications)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return notifications, resp, err
+}
+
+type markReadOptions struct {
+	LastReadAt time.Time `url:"last_read_at,omitempty"`
+}
+
+// MarkNotificationsRead marks all notifications up to lastRead as read.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#mark-as-read
+func (s *ActivityService) MarkNotificationsRead(lastRead time.Time) (*Response, error) {
+	u := fmt.Sprintf("notifications")
+	u, err := addOptions(u, markReadOptions{lastRead})
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// MarkRepositoryNotificationsRead marks all notifications up to lastRead in
+// the specified repository as read.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#mark-notifications-as-read-in-a-repository
+func (s *ActivityService) MarkRepositoryNotificationsRead(owner, repo string, lastRead time.Time) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/notifications", owner, repo)
+	u, err := addOptions(u, markReadOptions{lastRead})
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// GetThread gets the specified notification thread.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#view-a-single-thread
+func (s *ActivityService) GetThread(id string) (*Notification, *Response, error) {
+	u := fmt.Sprintf("notifications/threads/%v", id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	notification := new(Notification)
+	resp, err := s.client.Do(req, notification)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return notification, resp, err
+}
+
+// MarkThreadRead marks the specified thread as read.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#mark-a-thread-as-read
+func (s *ActivityService) MarkThreadRead(id string) (*Response, error) {
+	u := fmt.Sprintf("notifications/threads/%v", id)
+
+	req, err := s.client.NewRequest("PATCH", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// GetThreadSubscription checks to see if the authenticated user is subscribed
+// to a thread.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#get-a-thread-subscription
+func (s *ActivityService) GetThreadSubscription(id string) (*Subscription, *Response, error) {
+	u := fmt.Sprintf("notifications/threads/%v/subscription", id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	sub := new(Subscription)
+	resp, err := s.client.Do(req, sub)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return sub, resp, err
+}
+
+// SetThreadSubscription sets the subscription for the specified thread for the
+// authenticated user.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#set-a-thread-subscription
+func (s *ActivityService) SetThreadSubscription(id string, subscription *Subscription) (*Subscription, *Response, error) {
+	u := fmt.Sprintf("notifications/threads/%v/subscription", id)
+
+	req, err := s.client.NewRequest("PUT", u, subscription)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	sub := new(Subscription)
+	resp, err := s.client.Do(req, sub)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return sub, resp, err
+}
+
+// DeleteThreadSubscription deletes the subscription for the specified thread
+// for the authenticated user.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/notifications/#delete-a-thread-subscription
+func (s *ActivityService) DeleteThreadSubscription(id string) (*Response, error) {
+	u := fmt.Sprintf("notifications/threads/%v/subscription", id)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/activity_star.go b/vendor/github.com/google/go-github/github/activity_star.go
new file mode 100644
index 0000000..080d654
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/activity_star.go
@@ -0,0 +1,132 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// StarredRepository is returned by ListStarred.
+type StarredRepository struct {
+	StarredAt  *Timestamp  `json:"starred_at,omitempty"`
+	Repository *Repository `json:"repo,omitempty"`
+}
+
+// Stargazer represents a user that has starred a repository.
+type Stargazer struct {
+	StarredAt *Timestamp `json:"starred_at,omitempty"`
+	User      *User      `json:"user,omitempty"`
+}
+
+// ListStargazers lists people who have starred the specified repo.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/starring/#list-stargazers
+func (s *ActivityService) ListStargazers(owner, repo string, opt *ListOptions) ([]Stargazer, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/stargazers", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeStarringPreview)
+
+	stargazers := new([]Stargazer)
+	resp, err := s.client.Do(req, stargazers)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *stargazers, resp, err
+}
+
+// ActivityListStarredOptions specifies the optional parameters to the
+// ActivityService.ListStarred method.
+type ActivityListStarredOptions struct {
+	// How to sort the repository list.  Possible values are: created, updated,
+	// pushed, full_name.  Default is "full_name".
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort repositories.  Possible values are: asc, desc.
+	// Default is "asc" when sort is "full_name", otherwise default is "desc".
+	Direction string `url:"direction,omitempty"`
+
+	ListOptions
+}
+
+// ListStarred lists all the repos starred by a user.  Passing the empty string
+// will list the starred repositories for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/starring/#list-repositories-being-starred
+func (s *ActivityService) ListStarred(user string, opt *ActivityListStarredOptions) ([]StarredRepository, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/starred", user)
+	} else {
+		u = "user/starred"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeStarringPreview)
+
+	repos := new([]StarredRepository)
+	resp, err := s.client.Do(req, repos)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *repos, resp, err
+}
+
+// IsStarred checks if a repository is starred by authenticated user.
+//
+// GitHub API docs: https://developer.github.com/v3/activity/starring/#check-if-you-are-starring-a-repository
+func (s *ActivityService) IsStarred(owner, repo string) (bool, *Response, error) {
+	u := fmt.Sprintf("user/starred/%v/%v", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+	resp, err := s.client.Do(req, nil)
+	starred, err := parseBoolResponse(err)
+	return starred, resp, err
+}
+
+// Star a repository as the authenticated user.
+//
+// GitHub API docs: https://developer.github.com/v3/activity/starring/#star-a-repository
+func (s *ActivityService) Star(owner, repo string) (*Response, error) {
+	u := fmt.Sprintf("user/starred/%v/%v", owner, repo)
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// Unstar a repository as the authenticated user.
+//
+// GitHub API docs: https://developer.github.com/v3/activity/starring/#unstar-a-repository
+func (s *ActivityService) Unstar(owner, repo string) (*Response, error) {
+	u := fmt.Sprintf("user/starred/%v/%v", owner, repo)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/activity_watching.go b/vendor/github.com/google/go-github/github/activity_watching.go
new file mode 100644
index 0000000..c002b3b
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/activity_watching.go
@@ -0,0 +1,136 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Subscription identifies a repository or thread subscription.
+type Subscription struct {
+	Subscribed *bool      `json:"subscribed,omitempty"`
+	Ignored    *bool      `json:"ignored,omitempty"`
+	Reason     *string    `json:"reason,omitempty"`
+	CreatedAt  *Timestamp `json:"created_at,omitempty"`
+	URL        *string    `json:"url,omitempty"`
+
+	// only populated for repository subscriptions
+	RepositoryURL *string `json:"repository_url,omitempty"`
+
+	// only populated for thread subscriptions
+	ThreadURL *string `json:"thread_url,omitempty"`
+}
+
+// ListWatchers lists watchers of a particular repo.
+//
+// GitHub API Docs: http://developer.github.com/v3/activity/watching/#list-watchers
+func (s *ActivityService) ListWatchers(owner, repo string, opt *ListOptions) ([]User, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/subscribers", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	watchers := new([]User)
+	resp, err := s.client.Do(req, watchers)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *watchers, resp, err
+}
+
+// ListWatched lists the repositories the specified user is watching.  Passing
+// the empty string will fetch watched repos for the authenticated user.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/watching/#list-repositories-being-watched
+func (s *ActivityService) ListWatched(user string, opt *ListOptions) ([]Repository, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/subscriptions", user)
+	} else {
+		u = "user/subscriptions"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	watched := new([]Repository)
+	resp, err := s.client.Do(req, watched)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *watched, resp, err
+}
+
+// GetRepositorySubscription returns the subscription for the specified
+// repository for the authenticated user.  If the authenticated user is not
+// watching the repository, a nil Subscription is returned.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/watching/#get-a-repository-subscription
+func (s *ActivityService) GetRepositorySubscription(owner, repo string) (*Subscription, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/subscription", owner, repo)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	sub := new(Subscription)
+	resp, err := s.client.Do(req, sub)
+	if err != nil {
+		// if it's just a 404, don't return that as an error
+		_, err = parseBoolResponse(err)
+		return nil, resp, err
+	}
+
+	return sub, resp, err
+}
+
+// SetRepositorySubscription sets the subscription for the specified repository
+// for the authenticated user.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/watching/#set-a-repository-subscription
+func (s *ActivityService) SetRepositorySubscription(owner, repo string, subscription *Subscription) (*Subscription, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/subscription", owner, repo)
+
+	req, err := s.client.NewRequest("PUT", u, subscription)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	sub := new(Subscription)
+	resp, err := s.client.Do(req, sub)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return sub, resp, err
+}
+
+// DeleteRepositorySubscription deletes the subscription for the specified
+// repository for the authenticated user.
+//
+// GitHub API Docs: https://developer.github.com/v3/activity/watching/#delete-a-repository-subscription
+func (s *ActivityService) DeleteRepositorySubscription(owner, repo string) (*Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/subscription", owner, repo)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/authorizations.go b/vendor/github.com/google/go-github/github/authorizations.go
new file mode 100644
index 0000000..cfe6349
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/authorizations.go
@@ -0,0 +1,320 @@
+// Copyright 2015 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Scope models a GitHub authorization scope.
+//
+// GitHub API docs:https://developer.github.com/v3/oauth/#scopes
+type Scope string
+
+// This is the set of scopes for GitHub API V3
+const (
+	ScopeNone           Scope = "(no scope)" // REVISIT: is this actually returned, or just a documentation artifact?
+	ScopeUser           Scope = "user"
+	ScopeUserEmail      Scope = "user:email"
+	ScopeUserFollow     Scope = "user:follow"
+	ScopePublicRepo     Scope = "public_repo"
+	ScopeRepo           Scope = "repo"
+	ScopeRepoDeployment Scope = "repo_deployment"
+	ScopeRepoStatus     Scope = "repo:status"
+	ScopeDeleteRepo     Scope = "delete_repo"
+	ScopeNotifications  Scope = "notifications"
+	ScopeGist           Scope = "gist"
+	ScopeReadRepoHook   Scope = "read:repo_hook"
+	ScopeWriteRepoHook  Scope = "write:repo_hook"
+	ScopeAdminRepoHook  Scope = "admin:repo_hook"
+	ScopeAdminOrgHook   Scope = "admin:org_hook"
+	ScopeReadOrg        Scope = "read:org"
+	ScopeWriteOrg       Scope = "write:org"
+	ScopeAdminOrg       Scope = "admin:org"
+	ScopeReadPublicKey  Scope = "read:public_key"
+	ScopeWritePublicKey Scope = "write:public_key"
+	ScopeAdminPublicKey Scope = "admin:public_key"
+)
+
+// AuthorizationsService handles communication with the authorization related
+// methods of the GitHub API.
+//
+// This service requires HTTP Basic Authentication; it cannot be accessed using
+// an OAuth token.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/
+type AuthorizationsService struct {
+	client *Client
+}
+
+// Authorization represents an individual GitHub authorization.
+type Authorization struct {
+	ID             *int              `json:"id,omitempty"`
+	URL            *string           `json:"url,omitempty"`
+	Scopes         []Scope           `json:"scopes,omitempty"`
+	Token          *string           `json:"token,omitempty"`
+	TokenLastEight *string           `json:"token_last_eight,omitempty"`
+	HashedToken    *string           `json:"hashed_token,omitempty"`
+	App            *AuthorizationApp `json:"app,omitempty"`
+	Note           *string           `json:"note,omitempty"`
+	NoteURL        *string           `json:"note_url,omitempty"`
+	UpdateAt       *Timestamp        `json:"updated_at,omitempty"`
+	CreatedAt      *Timestamp        `json:"created_at,omitempty"`
+	Fingerprint    *string           `json:"fingerprint,omitempty"`
+
+	// User is only populated by the Check and Reset methods.
+	User *User `json:"user,omitempty"`
+}
+
+func (a Authorization) String() string {
+	return Stringify(a)
+}
+
+// AuthorizationApp represents an individual GitHub app (in the context of authorization).
+type AuthorizationApp struct {
+	URL      *string `json:"url,omitempty"`
+	Name     *string `json:"name,omitempty"`
+	ClientID *string `json:"client_id,omitempty"`
+}
+
+func (a AuthorizationApp) String() string {
+	return Stringify(a)
+}
+
+// AuthorizationRequest represents a request to create an authorization.
+type AuthorizationRequest struct {
+	Scopes       []Scope `json:"scopes,omitempty"`
+	Note         *string `json:"note,omitempty"`
+	NoteURL      *string `json:"note_url,omitempty"`
+	ClientID     *string `json:"client_id,omitempty"`
+	ClientSecret *string `json:"client_secret,omitempty"`
+	Fingerprint  *string `json:"fingerprint,omitempty"`
+}
+
+func (a AuthorizationRequest) String() string {
+	return Stringify(a)
+}
+
+// AuthorizationUpdateRequest represents a request to update an authorization.
+//
+// Note that for any one update, you must only provide one of the "scopes"
+// fields.  That is, you may provide only one of "Scopes", or "AddScopes", or
+// "RemoveScopes".
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#update-an-existing-authorization
+type AuthorizationUpdateRequest struct {
+	Scopes       []string `json:"scopes,omitempty"`
+	AddScopes    []string `json:"add_scopes,omitempty"`
+	RemoveScopes []string `json:"remove_scopes,omitempty"`
+	Note         *string  `json:"note,omitempty"`
+	NoteURL      *string  `json:"note_url,omitempty"`
+	Fingerprint  *string  `json:"fingerprint,omitempty"`
+}
+
+func (a AuthorizationUpdateRequest) String() string {
+	return Stringify(a)
+}
+
+// List the authorizations for the authenticated user.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#list-your-authorizations
+func (s *AuthorizationsService) List(opt *ListOptions) ([]Authorization, *Response, error) {
+	u := "authorizations"
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	auths := new([]Authorization)
+	resp, err := s.client.Do(req, auths)
+	if err != nil {
+		return nil, resp, err
+	}
+	return *auths, resp, err
+}
+
+// Get a single authorization.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#get-a-single-authorization
+func (s *AuthorizationsService) Get(id int) (*Authorization, *Response, error) {
+	u := fmt.Sprintf("authorizations/%d", id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	a := new(Authorization)
+	resp, err := s.client.Do(req, a)
+	if err != nil {
+		return nil, resp, err
+	}
+	return a, resp, err
+}
+
+// Create a new authorization for the specified OAuth application.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#create-a-new-authorization
+func (s *AuthorizationsService) Create(auth *AuthorizationRequest) (*Authorization, *Response, error) {
+	u := "authorizations"
+
+	req, err := s.client.NewRequest("POST", u, auth)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	a := new(Authorization)
+	resp, err := s.client.Do(req, a)
+	if err != nil {
+		return nil, resp, err
+	}
+	return a, resp, err
+}
+
+// GetOrCreateForApp creates a new authorization for the specified OAuth
+// application, only if an authorization for that application doesn’t already
+// exist for the user.
+//
+// If a new token is created, the HTTP status code will be "201 Created", and
+// the returned Authorization.Token field will be populated. If an existing
+// token is returned, the status code will be "200 OK" and the
+// Authorization.Token field will be empty.
+//
+// clientID is the OAuth Client ID with which to create the token.
+//
+// GitHub API docs:
+// - https://developer.github.com/v3/oauth_authorizations/#get-or-create-an-authorization-for-a-specific-app
+// - https://developer.github.com/v3/oauth_authorizations/#get-or-create-an-authorization-for-a-specific-app-and-fingerprint
+func (s *AuthorizationsService) GetOrCreateForApp(clientID string, auth *AuthorizationRequest) (*Authorization, *Response, error) {
+	var u string
+	if auth.Fingerprint == nil || *auth.Fingerprint == "" {
+		u = fmt.Sprintf("authorizations/clients/%v", clientID)
+	} else {
+		u = fmt.Sprintf("authorizations/clients/%v/%v", clientID, *auth.Fingerprint)
+	}
+
+	req, err := s.client.NewRequest("PUT", u, auth)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	a := new(Authorization)
+	resp, err := s.client.Do(req, a)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return a, resp, err
+}
+
+// Edit a single authorization.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#update-an-existing-authorization
+func (s *AuthorizationsService) Edit(id int, auth *AuthorizationUpdateRequest) (*Authorization, *Response, error) {
+	u := fmt.Sprintf("authorizations/%d", id)
+
+	req, err := s.client.NewRequest("PATCH", u, auth)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	a := new(Authorization)
+	resp, err := s.client.Do(req, a)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return a, resp, err
+}
+
+// Delete a single authorization.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#delete-an-authorization
+func (s *AuthorizationsService) Delete(id int) (*Response, error) {
+	u := fmt.Sprintf("authorizations/%d", id)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// Check if an OAuth token is valid for a specific app.
+//
+// Note that this operation requires the use of BasicAuth, but where the
+// username is the OAuth application clientID, and the password is its
+// clientSecret. Invalid tokens will return a 404 Not Found.
+//
+// The returned Authorization.User field will be populated.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#check-an-authorization
+func (s *AuthorizationsService) Check(clientID string, token string) (*Authorization, *Response, error) {
+	u := fmt.Sprintf("applications/%v/tokens/%v", clientID, token)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	a := new(Authorization)
+	resp, err := s.client.Do(req, a)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return a, resp, err
+}
+
+// Reset is used to reset a valid OAuth token without end user involvement.
+// Applications must save the "token" property in the response, because changes
+// take effect immediately.
+//
+// Note that this operation requires the use of BasicAuth, but where the
+// username is the OAuth application clientID, and the password is its
+// clientSecret. Invalid tokens will return a 404 Not Found.
+//
+// The returned Authorization.User field will be populated.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#reset-an-authorization
+func (s *AuthorizationsService) Reset(clientID string, token string) (*Authorization, *Response, error) {
+	u := fmt.Sprintf("applications/%v/tokens/%v", clientID, token)
+
+	req, err := s.client.NewRequest("POST", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	a := new(Authorization)
+	resp, err := s.client.Do(req, a)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return a, resp, err
+}
+
+// Revoke an authorization for an application.
+//
+// Note that this operation requires the use of BasicAuth, but where the
+// username is the OAuth application clientID, and the password is its
+// clientSecret. Invalid tokens will return a 404 Not Found.
+//
+// GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#revoke-an-authorization-for-an-application
+func (s *AuthorizationsService) Revoke(clientID string, token string) (*Response, error) {
+	u := fmt.Sprintf("applications/%v/tokens/%v", clientID, token)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/doc.go b/vendor/github.com/google/go-github/github/doc.go
new file mode 100644
index 0000000..0d32d49
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/doc.go
@@ -0,0 +1,133 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package github provides a client for using the GitHub API.
+
+Construct a new GitHub client, then use the various services on the client to
+access different parts of the GitHub API. For example:
+
+	client := github.NewClient(nil)
+
+	// list all organizations for user "willnorris"
+	orgs, _, err := client.Organizations.List("willnorris", nil)
+
+Set optional parameters for an API method by passing an Options object.
+
+	// list recently updated repositories for org "github"
+	opt := &github.RepositoryListByOrgOptions{Sort: "updated"}
+	repos, _, err := client.Repositories.ListByOrg("github", opt)
+
+The services of a client divide the API into logical chunks and correspond to
+the structure of the GitHub API documentation at
+http://developer.github.com/v3/.
+
+Authentication
+
+The go-github library does not directly handle authentication. Instead, when
+creating a new client, pass an http.Client that can handle authentication for
+you. The easiest and recommended way to do this is using the golang.org/x/oauth2
+library, but you can always use any other library that provides an http.Client.
+If you have an OAuth2 access token (for example, a personal API token), you can
+use it with the oauth2 library using:
+
+	import "golang.org/x/oauth2"
+
+	func main() {
+		ts := oauth2.StaticTokenSource(
+			&oauth2.Token{AccessToken: "... your access token ..."},
+		)
+		tc := oauth2.NewClient(oauth2.NoContext, ts)
+
+		client := github.NewClient(tc)
+
+		// list all repositories for the authenticated user
+		repos, _, err := client.Repositories.List("", nil)
+	}
+
+Note that when using an authenticated Client, all calls made by the client will
+include the specified OAuth token. Therefore, authenticated clients should
+almost never be shared between different users.
+
+Rate Limiting
+
+GitHub imposes a rate limit on all API clients.  Unauthenticated clients are
+limited to 60 requests per hour, while authenticated clients can make up to
+5,000 requests per hour.  To receive the higher rate limit when making calls
+that are not issued on behalf of a user, use the
+UnauthenticatedRateLimitedTransport.
+
+The Rate method on a client returns the rate limit information based on the most
+recent API call.  This is updated on every call, but may be out of date if it's
+been some time since the last API call and other clients have made subsequent
+requests since then.  You can always call RateLimits() directly to get the most
+up-to-date rate limit data for the client.
+
+To detect an API rate limit error, you can check if its type is *github.RateLimitError:
+
+	repos, _, err := client.Repositories.List("", nil)
+	if _, ok := err.(*github.RateLimitError); ok {
+		log.Println("hit rate limit")
+	}
+
+Learn more about GitHub rate limiting at
+http://developer.github.com/v3/#rate-limiting.
+
+Conditional Requests
+
+The GitHub API has good support for conditional requests which will help
+prevent you from burning through your rate limit, as well as help speed up your
+application.  go-github does not handle conditional requests directly, but is
+instead designed to work with a caching http.Transport.  We recommend using
+https://github.com/gregjones/httpcache, which can be used in conjunction with
+https://github.com/sourcegraph/apiproxy to provide additional flexibility and
+control of caching rules.
+
+Learn more about GitHub conditional requests at
+https://developer.github.com/v3/#conditional-requests.
+
+Creating and Updating Resources
+
+All structs for GitHub resources use pointer values for all non-repeated fields.
+This allows distinguishing between unset fields and those set to a zero-value.
+Helper functions have been provided to easily create these pointers for string,
+bool, and int values.  For example:
+
+	// create a new private repository named "foo"
+	repo := &github.Repository{
+		Name:    github.String("foo"),
+		Private: github.Bool(true),
+	}
+	client.Repositories.Create("", repo)
+
+Users who have worked with protocol buffers should find this pattern familiar.
+
+Pagination
+
+All requests for resource collections (repos, pull requests, issues, etc)
+support pagination. Pagination options are described in the
+ListOptions struct and passed to the list methods directly or as an
+embedded type of a more specific list options struct (for example
+PullRequestListOptions).  Pages information is available via Response struct.
+
+	opt := &github.RepositoryListByOrgOptions{
+		ListOptions: github.ListOptions{PerPage: 10},
+	}
+	// get all pages of results
+	var allRepos []github.Repository
+	for {
+		repos, resp, err := client.Repositories.ListByOrg("github", opt)
+		if err != nil {
+			return err
+		}
+		allRepos = append(allRepos, repos...)
+		if resp.NextPage == 0 {
+			break
+		}
+		opt.ListOptions.Page = resp.NextPage
+	}
+
+*/
+package github
diff --git a/vendor/github.com/google/go-github/github/event_types.go b/vendor/github.com/google/go-github/github/event_types.go
new file mode 100644
index 0000000..6f7202e
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/event_types.go
@@ -0,0 +1,460 @@
+// Copyright 2016 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// These event types are shared between the Events API and used as Webhook payloads.
+
+package github
+
+// CommitCommentEvent is triggered when a commit comment is created.
+// The Webhook event name is "commit_comment".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#commitcommentevent
+type CommitCommentEvent struct {
+	Comment *RepositoryComment `json:"comment,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Action *string     `json:"action,omitempty"`
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// CreateEvent represents a created repository, branch, or tag.
+// The Webhook event name is "create".
+//
+// Note: webhooks will not receive this event for created repositories.
+// Additionally, webhooks will not receive this event for tags if more
+// than three tags are pushed at once.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#createevent
+type CreateEvent struct {
+	Ref *string `json:"ref,omitempty"`
+	// RefType is the object that was created. Possible values are: "repository", "branch", "tag".
+	RefType      *string `json:"ref_type,omitempty"`
+	MasterBranch *string `json:"master_branch,omitempty"`
+	Description  *string `json:"description,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	PusherType *string     `json:"pusher_type,omitempty"`
+	Repo       *Repository `json:"repository,omitempty"`
+	Sender     *User       `json:"sender,omitempty"`
+}
+
+// DeleteEvent represents a deleted branch or tag.
+// The Webhook event name is "delete".
+//
+// Note: webhooks will not receive this event for tags if more than three tags
+// are deleted at once.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#deleteevent
+type DeleteEvent struct {
+	Ref *string `json:"ref,omitempty"`
+	// RefType is the object that was deleted. Possible values are: "branch", "tag".
+	RefType *string `json:"ref_type,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	PusherType *string     `json:"pusher_type,omitempty"`
+	Repo       *Repository `json:"repository,omitempty"`
+	Sender     *User       `json:"sender,omitempty"`
+}
+
+// DeploymentEvent represents a deployment.
+// The Webhook event name is "deployment".
+//
+// Events of this type are not visible in timelines, they are only used to trigger hooks.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#deploymentevent
+type DeploymentEvent struct {
+	Deployment *Deployment `json:"deployment,omitempty"`
+	Repo       *Repository `json:"repository,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Sender *User `json:"sender,omitempty"`
+}
+
+// DeploymentStatusEvent represents a deployment status.
+// The Webhook event name is "deployment_status".
+//
+// Events of this type are not visible in timelines, they are only used to trigger hooks.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#deploymentstatusevent
+type DeploymentStatusEvent struct {
+	Deployment       *Deployment       `json:"deployment,omitempty"`
+	DeploymentStatus *DeploymentStatus `json:"deployment_status,omitempty"`
+	Repo             *Repository       `json:"repository,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Sender *User `json:"sender,omitempty"`
+}
+
+// ForkEvent is triggered when a user forks a repository.
+// The Webhook event name is "fork".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#forkevent
+type ForkEvent struct {
+	// Forkee is the created repository.
+	Forkee *Repository `json:"forkee,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// Page represents a single Wiki page.
+type Page struct {
+	PageName *string `json:"page_name,omitempty"`
+	Title    *string `json:"title,omitempty"`
+	Summary  *string `json:"summary,omitempty"`
+	Action   *string `json:"action,omitempty"`
+	SHA      *string `json:"sha,omitempty"`
+	HTMLURL  *string `json:"html_url,omitempty"`
+}
+
+// GollumEvent is triggered when a Wiki page is created or updated.
+// The Webhook event name is "gollum".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#gollumevent
+type GollumEvent struct {
+	Pages []*Page `json:"pages,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// DEPRECATED: IssueActivityEvent represents the payload delivered by Issue webhook
+// Use IssuesEvent instead.
+type IssueActivityEvent struct {
+	Action *string `json:"action,omitempty"`
+	Issue  *Issue  `json:"issue,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// EditChange represents the changes when an issue, pull request, or comment has
+// been edited.
+type EditChange struct {
+	Title *struct {
+		From *string `json:"from,omitempty"`
+	} `json:"title,omitempty"`
+	Body *struct {
+		From *string `json:"from,omitempty"`
+	} `json:"body,omitempty"`
+}
+
+// IssueCommentEvent is triggered when an issue comment is created on an issue
+// or pull request.
+// The Webhook event name is "issue_comment".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#issuecommentevent
+type IssueCommentEvent struct {
+	// Action is the action that was performed on the comment.
+	// Possible values are: "created", "edited", "deleted".
+	Action  *string       `json:"action,omitempty"`
+	Issue   *Issue        `json:"issue,omitempty"`
+	Comment *IssueComment `json:"comment,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Changes *EditChange `json:"changes,omitempty"`
+	Repo    *Repository `json:"repository,omitempty"`
+	Sender  *User       `json:"sender,omitempty"`
+}
+
+// IssuesEvent is triggered when an issue is assigned, unassigned, labeled,
+// unlabeled, opened, closed, or reopened.
+// The Webhook event name is "issues".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#issuesevent
+type IssuesEvent struct {
+	// Action is the action that was performed. Possible values are: "assigned",
+	// "unassigned", "labeled", "unlabeled", "opened", "closed", "reopened", "edited".
+	Action   *string `json:"action,omitempty"`
+	Issue    *Issue  `json:"issue,omitempty"`
+	Assignee *User   `json:"assignee,omitempty"`
+	Label    *Label  `json:"label,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Changes *EditChange `json:"changes,omitempty"`
+	Repo    *Repository `json:"repository,omitempty"`
+	Sender  *User       `json:"sender,omitempty"`
+}
+
+// MemberEvent is triggered when a user is added as a collaborator to a repository.
+// The Webhook event name is "member".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#memberevent
+type MemberEvent struct {
+	// Action is the action that was performed. Possible value is: "added".
+	Action *string `json:"action,omitempty"`
+	Member *User   `json:"member,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// MembershipEvent is triggered when a user is added or removed from a team.
+// The Webhook event name is "membership".
+//
+// Events of this type are not visible in timelines, they are only used to
+// trigger organization webhooks.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#membershipevent
+type MembershipEvent struct {
+	// Action is the action that was performed. Possible values are: "added", "removed".
+	Action *string `json:"action,omitempty"`
+	// Scope is the scope of the membership. Possible value is: "team".
+	Scope  *string `json:"scope,omitempty"`
+	Member *User   `json:"member,omitempty"`
+	Team   *Team   `json:"team,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Org    *Organization `json:"organization,omitempty"`
+	Sender *User         `json:"sender,omitempty"`
+}
+
+// PageBuildEvent represents an attempted build of a GitHub Pages site, whether
+// successful or not.
+// The Webhook event name is "page_build".
+//
+// This event is triggered on push to a GitHub Pages enabled branch (gh-pages
+// for project pages, master for user and organization pages).
+//
+// Events of this type are not visible in timelines, they are only used to trigger hooks.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#pagebuildevent
+type PageBuildEvent struct {
+	Build *PagesBuild `json:"build,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	ID     *int        `json:"id,omitempty"`
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// PublicEvent is triggered when a private repository is open sourced.
+// According to GitHub: "Without a doubt: the best GitHub event."
+// The Webhook event name is "public".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#publicevent
+type PublicEvent struct {
+	// The following fields are only populated by Webhook events.
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// PullRequestEvent is triggered when a pull request is assigned, unassigned,
+// labeled, unlabeled, opened, closed, reopened, or synchronized.
+// The Webhook event name is "pull_request".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#pullrequestevent
+type PullRequestEvent struct {
+	// Action is the action that was performed. Possible values are: "assigned",
+	// "unassigned", "labeled", "unlabeled", "opened", "closed", or "reopened",
+	// "synchronize", "edited". If the action is "closed" and the merged key is false,
+	// the pull request was closed with unmerged commits. If the action is "closed"
+	// and the merged key is true, the pull request was merged.
+	Action      *string      `json:"action,omitempty"`
+	Number      *int         `json:"number,omitempty"`
+	PullRequest *PullRequest `json:"pull_request,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Changes *EditChange `json:"changes,omitempty"`
+	Repo    *Repository `json:"repository,omitempty"`
+	Sender  *User       `json:"sender,omitempty"`
+}
+
+// PullRequestReviewCommentEvent is triggered when a comment is created on a
+// portion of the unified diff of a pull request.
+// The Webhook event name is "pull_request_review_comment".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#pullrequestreviewcommentevent
+type PullRequestReviewCommentEvent struct {
+	// Action is the action that was performed on the comment.
+	// Possible values are: "created", "edited", "deleted".
+	Action      *string             `json:"action,omitempty"`
+	PullRequest *PullRequest        `json:"pull_request,omitempty"`
+	Comment     *PullRequestComment `json:"comment,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Changes *EditChange `json:"changes,omitempty"`
+	Repo    *Repository `json:"repository,omitempty"`
+	Sender  *User       `json:"sender,omitempty"`
+}
+
+// PushEvent represents a git push to a GitHub repository.
+//
+// GitHub API docs: http://developer.github.com/v3/activity/events/types/#pushevent
+type PushEvent struct {
+	PushID       *int                 `json:"push_id,omitempty"`
+	Head         *string              `json:"head,omitempty"`
+	Ref          *string              `json:"ref,omitempty"`
+	Size         *int                 `json:"size,omitempty"`
+	Commits      []PushEventCommit    `json:"commits,omitempty"`
+	Repo         *PushEventRepository `json:"repository,omitempty"`
+	Before       *string              `json:"before,omitempty"`
+	DistinctSize *int                 `json:"distinct_size,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	After      *string          `json:"after,omitempty"`
+	Created    *bool            `json:"created,omitempty"`
+	Deleted    *bool            `json:"deleted,omitempty"`
+	Forced     *bool            `json:"forced,omitempty"`
+	BaseRef    *string          `json:"base_ref,omitempty"`
+	Compare    *string          `json:"compare,omitempty"`
+	HeadCommit *PushEventCommit `json:"head_commit,omitempty"`
+	Pusher     *User            `json:"pusher,omitempty"`
+	Sender     *User            `json:"sender,omitempty"`
+}
+
+func (p PushEvent) String() string {
+	return Stringify(p)
+}
+
+// PushEventCommit represents a git commit in a GitHub PushEvent.
+type PushEventCommit struct {
+	SHA       *string       `json:"sha,omitempty"`
+	Message   *string       `json:"message,omitempty"`
+	Author    *CommitAuthor `json:"author,omitempty"`
+	Committer *CommitAuthor `json:"committer,omitempty"`
+	URL       *string       `json:"url,omitempty"`
+	Distinct  *bool         `json:"distinct,omitempty"`
+	Added     []string      `json:"added,omitempty"`
+	Removed   []string      `json:"removed,omitempty"`
+	Modified  []string      `json:"modified,omitempty"`
+}
+
+func (p PushEventCommit) String() string {
+	return Stringify(p)
+}
+
+// PushEventRepository represents the repo object in a PushEvent payload
+type PushEventRepository struct {
+	ID              *int                `json:"id,omitempty"`
+	Name            *string             `json:"name,omitempty"`
+	FullName        *string             `json:"full_name,omitempty"`
+	Owner           *PushEventRepoOwner `json:"owner,omitempty"`
+	Private         *bool               `json:"private,omitempty"`
+	Description     *string             `json:"description,omitempty"`
+	Fork            *bool               `json:"fork,omitempty"`
+	CreatedAt       *Timestamp          `json:"created_at,omitempty"`
+	PushedAt        *Timestamp          `json:"pushed_at,omitempty"`
+	UpdatedAt       *Timestamp          `json:"updated_at,omitempty"`
+	Homepage        *string             `json:"homepage,omitempty"`
+	Size            *int                `json:"size,omitempty"`
+	StargazersCount *int                `json:"stargazers_count,omitempty"`
+	WatchersCount   *int                `json:"watchers_count,omitempty"`
+	Language        *string             `json:"language,omitempty"`
+	HasIssues       *bool               `json:"has_issues,omitempty"`
+	HasDownloads    *bool               `json:"has_downloads,omitempty"`
+	HasWiki         *bool               `json:"has_wiki,omitempty"`
+	HasPages        *bool               `json:"has_pages,omitempty"`
+	ForksCount      *int                `json:"forks_count,omitempty"`
+	OpenIssuesCount *int                `json:"open_issues_count,omitempty"`
+	DefaultBranch   *string             `json:"default_branch,omitempty"`
+	MasterBranch    *string             `json:"master_branch,omitempty"`
+	Organization    *string             `json:"organization,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	URL     *string `json:"url,omitempty"`
+	HTMLURL *string `json:"html_url,omitempty"`
+}
+
+// PushEventRepoOwner is a basic reporesntation of user/org in a PushEvent payload
+type PushEventRepoOwner struct {
+	Name  *string `json:"name,omitempty"`
+	Email *string `json:"email,omitempty"`
+}
+
+// ReleaseEvent is triggered when a release is published.
+// The Webhook event name is "release".
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#releaseevent
+type ReleaseEvent struct {
+	// Action is the action that was performed. Possible value is: "published".
+	Action  *string            `json:"action,omitempty"`
+	Release *RepositoryRelease `json:"release,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
+
+// RepositoryEvent is triggered when a repository is created.
+// The Webhook event name is "repository".
+//
+// Events of this type are not visible in timelines, they are only used to
+// trigger organization webhooks.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#repositoryevent
+type RepositoryEvent struct {
+	// Action is the action that was performed. Possible values are: "created", "deleted",
+	// "publicized", "privatized".
+	Action *string     `json:"action,omitempty"`
+	Repo   *Repository `json:"repository,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Org    *Organization `json:"organization,omitempty"`
+	Sender *User         `json:"sender,omitempty"`
+}
+
+// StatusEvent is triggered when the status of a Git commit changes.
+// The Webhook event name is "status".
+//
+// Events of this type are not visible in timelines, they are only used to
+// trigger hooks.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#statusevent
+type StatusEvent struct {
+	SHA *string `json:"sha,omitempty"`
+	// State is the new state. Possible values are: "pending", "success", "failure", "error".
+	State       *string   `json:"state,omitempty"`
+	Description *string   `json:"description,omitempty"`
+	TargetURL   *string   `json:"target_url,omitempty"`
+	Branches    []*Branch `json:"branches,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	ID        *int             `json:"id,omitempty"`
+	Name      *string          `json:"name,omitempty"`
+	Context   *string          `json:"context,omitempty"`
+	Commit    *PushEventCommit `json:"commit,omitempty"`
+	CreatedAt *Timestamp       `json:"created_at,omitempty"`
+	UpdatedAt *Timestamp       `json:"updated_at,omitempty"`
+	Repo      *Repository      `json:"repository,omitempty"`
+	Sender    *User            `json:"sender,omitempty"`
+}
+
+// TeamAddEvent is triggered when a repository is added to a team.
+// The Webhook event name is "team_add".
+//
+// Events of this type are not visible in timelines. These events are only used
+// to trigger hooks.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#teamaddevent
+type TeamAddEvent struct {
+	Team *Team       `json:"team,omitempty"`
+	Repo *Repository `json:"repository,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Org    *Organization `json:"organization,omitempty"`
+	Sender *User         `json:"sender,omitempty"`
+}
+
+// WatchEvent is related to starring a repository, not watching. See this API
+// blog post for an explanation: https://developer.github.com/changes/2012-09-05-watcher-api/
+//
+// The event’s actor is the user who starred a repository, and the event’s
+// repository is the repository that was starred.
+//
+// GitHub docs: https://developer.github.com/v3/activity/events/types/#watchevent
+type WatchEvent struct {
+	// Action is the action that was performed. Possible value is: "started".
+	Action *string `json:"action,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Repo   *Repository `json:"repository,omitempty"`
+	Sender *User       `json:"sender,omitempty"`
+}
diff --git a/vendor/github.com/google/go-github/github/gists.go b/vendor/github.com/google/go-github/github/gists.go
new file mode 100644
index 0000000..a662d35
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/gists.go
@@ -0,0 +1,281 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// GistsService handles communication with the Gist related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/
+type GistsService struct {
+	client *Client
+}
+
+// Gist represents a GitHub's gist.
+type Gist struct {
+	ID          *string                   `json:"id,omitempty"`
+	Description *string                   `json:"description,omitempty"`
+	Public      *bool                     `json:"public,omitempty"`
+	Owner       *User                     `json:"owner,omitempty"`
+	Files       map[GistFilename]GistFile `json:"files,omitempty"`
+	Comments    *int                      `json:"comments,omitempty"`
+	HTMLURL     *string                   `json:"html_url,omitempty"`
+	GitPullURL  *string                   `json:"git_pull_url,omitempty"`
+	GitPushURL  *string                   `json:"git_push_url,omitempty"`
+	CreatedAt   *time.Time                `json:"created_at,omitempty"`
+	UpdatedAt   *time.Time                `json:"updated_at,omitempty"`
+}
+
+func (g Gist) String() string {
+	return Stringify(g)
+}
+
+// GistFilename represents filename on a gist.
+type GistFilename string
+
+// GistFile represents a file on a gist.
+type GistFile struct {
+	Size     *int    `json:"size,omitempty"`
+	Filename *string `json:"filename,omitempty"`
+	RawURL   *string `json:"raw_url,omitempty"`
+	Content  *string `json:"content,omitempty"`
+}
+
+func (g GistFile) String() string {
+	return Stringify(g)
+}
+
+// GistListOptions specifies the optional parameters to the
+// GistsService.List, GistsService.ListAll, and GistsService.ListStarred methods.
+type GistListOptions struct {
+	// Since filters Gists by time.
+	Since time.Time `url:"since,omitempty"`
+
+	ListOptions
+}
+
+// List gists for a user. Passing the empty string will list
+// all public gists if called anonymously. However, if the call
+// is authenticated, it will returns all gists for the authenticated
+// user.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#list-gists
+func (s *GistsService) List(user string, opt *GistListOptions) ([]Gist, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/gists", user)
+	} else {
+		u = "gists"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	gists := new([]Gist)
+	resp, err := s.client.Do(req, gists)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *gists, resp, err
+}
+
+// ListAll lists all public gists.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#list-gists
+func (s *GistsService) ListAll(opt *GistListOptions) ([]Gist, *Response, error) {
+	u, err := addOptions("gists/public", opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	gists := new([]Gist)
+	resp, err := s.client.Do(req, gists)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *gists, resp, err
+}
+
+// ListStarred lists starred gists of authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#list-gists
+func (s *GistsService) ListStarred(opt *GistListOptions) ([]Gist, *Response, error) {
+	u, err := addOptions("gists/starred", opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	gists := new([]Gist)
+	resp, err := s.client.Do(req, gists)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *gists, resp, err
+}
+
+// Get a single gist.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#get-a-single-gist
+func (s *GistsService) Get(id string) (*Gist, *Response, error) {
+	u := fmt.Sprintf("gists/%v", id)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	gist := new(Gist)
+	resp, err := s.client.Do(req, gist)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return gist, resp, err
+}
+
+// GetRevision gets a specific revision of a gist.
+//
+// GitHub API docs: https://developer.github.com/v3/gists/#get-a-specific-revision-of-a-gist
+func (s *GistsService) GetRevision(id, sha string) (*Gist, *Response, error) {
+	u := fmt.Sprintf("gists/%v/%v", id, sha)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	gist := new(Gist)
+	resp, err := s.client.Do(req, gist)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return gist, resp, err
+}
+
+// Create a gist for authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#create-a-gist
+func (s *GistsService) Create(gist *Gist) (*Gist, *Response, error) {
+	u := "gists"
+	req, err := s.client.NewRequest("POST", u, gist)
+	if err != nil {
+		return nil, nil, err
+	}
+	g := new(Gist)
+	resp, err := s.client.Do(req, g)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return g, resp, err
+}
+
+// Edit a gist.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#edit-a-gist
+func (s *GistsService) Edit(id string, gist *Gist) (*Gist, *Response, error) {
+	u := fmt.Sprintf("gists/%v", id)
+	req, err := s.client.NewRequest("PATCH", u, gist)
+	if err != nil {
+		return nil, nil, err
+	}
+	g := new(Gist)
+	resp, err := s.client.Do(req, g)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return g, resp, err
+}
+
+// Delete a gist.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#delete-a-gist
+func (s *GistsService) Delete(id string) (*Response, error) {
+	u := fmt.Sprintf("gists/%v", id)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// Star a gist on behalf of authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#star-a-gist
+func (s *GistsService) Star(id string) (*Response, error) {
+	u := fmt.Sprintf("gists/%v/star", id)
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// Unstar a gist on a behalf of authenticated user.
+//
+// Github API docs: http://developer.github.com/v3/gists/#unstar-a-gist
+func (s *GistsService) Unstar(id string) (*Response, error) {
+	u := fmt.Sprintf("gists/%v/star", id)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// IsStarred checks if a gist is starred by authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#check-if-a-gist-is-starred
+func (s *GistsService) IsStarred(id string) (bool, *Response, error) {
+	u := fmt.Sprintf("gists/%v/star", id)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+	resp, err := s.client.Do(req, nil)
+	starred, err := parseBoolResponse(err)
+	return starred, resp, err
+}
+
+// Fork a gist.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/#fork-a-gist
+func (s *GistsService) Fork(id string) (*Gist, *Response, error) {
+	u := fmt.Sprintf("gists/%v/forks", id)
+	req, err := s.client.NewRequest("POST", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	g := new(Gist)
+	resp, err := s.client.Do(req, g)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return g, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/gists_comments.go b/vendor/github.com/google/go-github/github/gists_comments.go
new file mode 100644
index 0000000..c5c21bd
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/gists_comments.go
@@ -0,0 +1,118 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// GistComment represents a Gist comment.
+type GistComment struct {
+	ID        *int       `json:"id,omitempty"`
+	URL       *string    `json:"url,omitempty"`
+	Body      *string    `json:"body,omitempty"`
+	User      *User      `json:"user,omitempty"`
+	CreatedAt *time.Time `json:"created_at,omitempty"`
+}
+
+func (g GistComment) String() string {
+	return Stringify(g)
+}
+
+// ListComments lists all comments for a gist.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/comments/#list-comments-on-a-gist
+func (s *GistsService) ListComments(gistID string, opt *ListOptions) ([]GistComment, *Response, error) {
+	u := fmt.Sprintf("gists/%v/comments", gistID)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	comments := new([]GistComment)
+	resp, err := s.client.Do(req, comments)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *comments, resp, err
+}
+
+// GetComment retrieves a single comment from a gist.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/comments/#get-a-single-comment
+func (s *GistsService) GetComment(gistID string, commentID int) (*GistComment, *Response, error) {
+	u := fmt.Sprintf("gists/%v/comments/%v", gistID, commentID)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(GistComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// CreateComment creates a comment for a gist.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/comments/#create-a-comment
+func (s *GistsService) CreateComment(gistID string, comment *GistComment) (*GistComment, *Response, error) {
+	u := fmt.Sprintf("gists/%v/comments", gistID)
+	req, err := s.client.NewRequest("POST", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(GistComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// EditComment edits an existing gist comment.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/comments/#edit-a-comment
+func (s *GistsService) EditComment(gistID string, commentID int, comment *GistComment) (*GistComment, *Response, error) {
+	u := fmt.Sprintf("gists/%v/comments/%v", gistID, commentID)
+	req, err := s.client.NewRequest("PATCH", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(GistComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// DeleteComment deletes a gist comment.
+//
+// GitHub API docs: http://developer.github.com/v3/gists/comments/#delete-a-comment
+func (s *GistsService) DeleteComment(gistID string, commentID int) (*Response, error) {
+	u := fmt.Sprintf("gists/%v/comments/%v", gistID, commentID)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/git.go b/vendor/github.com/google/go-github/github/git.go
new file mode 100644
index 0000000..a80e55b
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/git.go
@@ -0,0 +1,14 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+// GitService handles communication with the git data related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/git/
+type GitService struct {
+	client *Client
+}
diff --git a/vendor/github.com/google/go-github/github/git_blobs.go b/vendor/github.com/google/go-github/github/git_blobs.go
new file mode 100644
index 0000000..55148fd
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/git_blobs.go
@@ -0,0 +1,47 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Blob represents a blob object.
+type Blob struct {
+	Content  *string `json:"content,omitempty"`
+	Encoding *string `json:"encoding,omitempty"`
+	SHA      *string `json:"sha,omitempty"`
+	Size     *int    `json:"size,omitempty"`
+	URL      *string `json:"url,omitempty"`
+}
+
+// GetBlob fetchs a blob from a repo given a SHA.
+//
+// GitHub API docs: http://developer.github.com/v3/git/blobs/#get-a-blob
+func (s *GitService) GetBlob(owner string, repo string, sha string) (*Blob, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/blobs/%v", owner, repo, sha)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	blob := new(Blob)
+	resp, err := s.client.Do(req, blob)
+	return blob, resp, err
+}
+
+// CreateBlob creates a blob object.
+//
+// GitHub API docs: https://developer.github.com/v3/git/blobs/#create-a-blob
+func (s *GitService) CreateBlob(owner string, repo string, blob *Blob) (*Blob, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/blobs", owner, repo)
+	req, err := s.client.NewRequest("POST", u, blob)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	t := new(Blob)
+	resp, err := s.client.Do(req, t)
+	return t, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/git_commits.go b/vendor/github.com/google/go-github/github/git_commits.go
new file mode 100644
index 0000000..41e7ff9
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/git_commits.go
@@ -0,0 +1,115 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// Commit represents a GitHub commit.
+type Commit struct {
+	SHA       *string       `json:"sha,omitempty"`
+	Author    *CommitAuthor `json:"author,omitempty"`
+	Committer *CommitAuthor `json:"committer,omitempty"`
+	Message   *string       `json:"message,omitempty"`
+	Tree      *Tree         `json:"tree,omitempty"`
+	Parents   []Commit      `json:"parents,omitempty"`
+	Stats     *CommitStats  `json:"stats,omitempty"`
+	URL       *string       `json:"url,omitempty"`
+
+	// CommentCount is the number of GitHub comments on the commit.  This
+	// is only populated for requests that fetch GitHub data like
+	// Pulls.ListCommits, Repositories.ListCommits, etc.
+	CommentCount *int `json:"comment_count,omitempty"`
+}
+
+func (c Commit) String() string {
+	return Stringify(c)
+}
+
+// CommitAuthor represents the author or committer of a commit.  The commit
+// author may not correspond to a GitHub User.
+type CommitAuthor struct {
+	Date  *time.Time `json:"date,omitempty"`
+	Name  *string    `json:"name,omitempty"`
+	Email *string    `json:"email,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Login *string `json:"username,omitempty"` // Renamed for go-github consistency.
+}
+
+func (c CommitAuthor) String() string {
+	return Stringify(c)
+}
+
+// GetCommit fetchs the Commit object for a given SHA.
+//
+// GitHub API docs: http://developer.github.com/v3/git/commits/#get-a-commit
+func (s *GitService) GetCommit(owner string, repo string, sha string) (*Commit, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/commits/%v", owner, repo, sha)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(Commit)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// createCommit represents the body of a CreateCommit request.
+type createCommit struct {
+	Author    *CommitAuthor `json:"author,omitempty"`
+	Committer *CommitAuthor `json:"committer,omitempty"`
+	Message   *string       `json:"message,omitempty"`
+	Tree      *string       `json:"tree,omitempty"`
+	Parents   []string      `json:"parents,omitempty"`
+}
+
+// CreateCommit creates a new commit in a repository.
+//
+// The commit.Committer is optional and will be filled with the commit.Author
+// data if omitted. If the commit.Author is omitted, it will be filled in with
+// the authenticated user’s information and the current date.
+//
+// GitHub API docs: http://developer.github.com/v3/git/commits/#create-a-commit
+func (s *GitService) CreateCommit(owner string, repo string, commit *Commit) (*Commit, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/commits", owner, repo)
+
+	body := &createCommit{}
+	if commit != nil {
+		parents := make([]string, len(commit.Parents))
+		for i, parent := range commit.Parents {
+			parents[i] = *parent.SHA
+		}
+
+		body = &createCommit{
+			Author:    commit.Author,
+			Committer: commit.Committer,
+			Message:   commit.Message,
+			Tree:      commit.Tree.SHA,
+			Parents:   parents,
+		}
+	}
+
+	req, err := s.client.NewRequest("POST", u, body)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(Commit)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/git_refs.go b/vendor/github.com/google/go-github/github/git_refs.go
new file mode 100644
index 0000000..3d2f6c8
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/git_refs.go
@@ -0,0 +1,162 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Reference represents a GitHub reference.
+type Reference struct {
+	Ref    *string    `json:"ref"`
+	URL    *string    `json:"url"`
+	Object *GitObject `json:"object"`
+}
+
+func (r Reference) String() string {
+	return Stringify(r)
+}
+
+// GitObject represents a Git object.
+type GitObject struct {
+	Type *string `json:"type"`
+	SHA  *string `json:"sha"`
+	URL  *string `json:"url"`
+}
+
+func (o GitObject) String() string {
+	return Stringify(o)
+}
+
+// createRefRequest represents the payload for creating a reference.
+type createRefRequest struct {
+	Ref *string `json:"ref"`
+	SHA *string `json:"sha"`
+}
+
+// updateRefRequest represents the payload for updating a reference.
+type updateRefRequest struct {
+	SHA   *string `json:"sha"`
+	Force *bool   `json:"force"`
+}
+
+// GetRef fetches the Reference object for a given Git ref.
+//
+// GitHub API docs: http://developer.github.com/v3/git/refs/#get-a-reference
+func (s *GitService) GetRef(owner string, repo string, ref string) (*Reference, *Response, error) {
+	ref = strings.TrimPrefix(ref, "refs/")
+	u := fmt.Sprintf("repos/%v/%v/git/refs/%v", owner, repo, ref)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := new(Reference)
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return r, resp, err
+}
+
+// ReferenceListOptions specifies optional parameters to the
+// GitService.ListRefs method.
+type ReferenceListOptions struct {
+	Type string `url:"-"`
+
+	ListOptions
+}
+
+// ListRefs lists all refs in a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/git/refs/#get-all-references
+func (s *GitService) ListRefs(owner, repo string, opt *ReferenceListOptions) ([]Reference, *Response, error) {
+	var u string
+	if opt != nil && opt.Type != "" {
+		u = fmt.Sprintf("repos/%v/%v/git/refs/%v", owner, repo, opt.Type)
+	} else {
+		u = fmt.Sprintf("repos/%v/%v/git/refs", owner, repo)
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var rs []Reference
+	resp, err := s.client.Do(req, &rs)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return rs, resp, err
+}
+
+// CreateRef creates a new ref in a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/git/refs/#create-a-reference
+func (s *GitService) CreateRef(owner string, repo string, ref *Reference) (*Reference, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/refs", owner, repo)
+	req, err := s.client.NewRequest("POST", u, &createRefRequest{
+		// back-compat with previous behavior that didn't require 'refs/' prefix
+		Ref: String("refs/" + strings.TrimPrefix(*ref.Ref, "refs/")),
+		SHA: ref.Object.SHA,
+	})
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := new(Reference)
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return r, resp, err
+}
+
+// UpdateRef updates an existing ref in a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/git/refs/#update-a-reference
+func (s *GitService) UpdateRef(owner string, repo string, ref *Reference, force bool) (*Reference, *Response, error) {
+	refPath := strings.TrimPrefix(*ref.Ref, "refs/")
+	u := fmt.Sprintf("repos/%v/%v/git/refs/%v", owner, repo, refPath)
+	req, err := s.client.NewRequest("PATCH", u, &updateRefRequest{
+		SHA:   ref.Object.SHA,
+		Force: &force,
+	})
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := new(Reference)
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return r, resp, err
+}
+
+// DeleteRef deletes a ref from a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/git/refs/#delete-a-reference
+func (s *GitService) DeleteRef(owner string, repo string, ref string) (*Response, error) {
+	ref = strings.TrimPrefix(ref, "refs/")
+	u := fmt.Sprintf("repos/%v/%v/git/refs/%v", owner, repo, ref)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/git_tags.go b/vendor/github.com/google/go-github/github/git_tags.go
new file mode 100644
index 0000000..7b53f5c
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/git_tags.go
@@ -0,0 +1,73 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+)
+
+// Tag represents a tag object.
+type Tag struct {
+	Tag     *string       `json:"tag,omitempty"`
+	SHA     *string       `json:"sha,omitempty"`
+	URL     *string       `json:"url,omitempty"`
+	Message *string       `json:"message,omitempty"`
+	Tagger  *CommitAuthor `json:"tagger,omitempty"`
+	Object  *GitObject    `json:"object,omitempty"`
+}
+
+// createTagRequest represents the body of a CreateTag request.  This is mostly
+// identical to Tag with the exception that the object SHA and Type are
+// top-level fields, rather than being nested inside a JSON object.
+type createTagRequest struct {
+	Tag     *string       `json:"tag,omitempty"`
+	Message *string       `json:"message,omitempty"`
+	Object  *string       `json:"object,omitempty"`
+	Type    *string       `json:"type,omitempty"`
+	Tagger  *CommitAuthor `json:"tagger,omitempty"`
+}
+
+// GetTag fetchs a tag from a repo given a SHA.
+//
+// GitHub API docs: http://developer.github.com/v3/git/tags/#get-a-tag
+func (s *GitService) GetTag(owner string, repo string, sha string) (*Tag, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/tags/%v", owner, repo, sha)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	tag := new(Tag)
+	resp, err := s.client.Do(req, tag)
+	return tag, resp, err
+}
+
+// CreateTag creates a tag object.
+//
+// GitHub API docs: http://developer.github.com/v3/git/tags/#create-a-tag-object
+func (s *GitService) CreateTag(owner string, repo string, tag *Tag) (*Tag, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/tags", owner, repo)
+
+	// convert Tag into a createTagRequest
+	tagRequest := &createTagRequest{
+		Tag:     tag.Tag,
+		Message: tag.Message,
+		Tagger:  tag.Tagger,
+	}
+	if tag.Object != nil {
+		tagRequest.Object = tag.Object.SHA
+		tagRequest.Type = tag.Object.Type
+	}
+
+	req, err := s.client.NewRequest("POST", u, tagRequest)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	t := new(Tag)
+	resp, err := s.client.Do(req, t)
+	return t, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/git_trees.go b/vendor/github.com/google/go-github/github/git_trees.go
new file mode 100644
index 0000000..9efa4b3
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/git_trees.go
@@ -0,0 +1,89 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Tree represents a GitHub tree.
+type Tree struct {
+	SHA     *string     `json:"sha,omitempty"`
+	Entries []TreeEntry `json:"tree,omitempty"`
+}
+
+func (t Tree) String() string {
+	return Stringify(t)
+}
+
+// TreeEntry represents the contents of a tree structure.  TreeEntry can
+// represent either a blob, a commit (in the case of a submodule), or another
+// tree.
+type TreeEntry struct {
+	SHA     *string `json:"sha,omitempty"`
+	Path    *string `json:"path,omitempty"`
+	Mode    *string `json:"mode,omitempty"`
+	Type    *string `json:"type,omitempty"`
+	Size    *int    `json:"size,omitempty"`
+	Content *string `json:"content,omitempty"`
+}
+
+func (t TreeEntry) String() string {
+	return Stringify(t)
+}
+
+// GetTree fetches the Tree object for a given sha hash from a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/git/trees/#get-a-tree
+func (s *GitService) GetTree(owner string, repo string, sha string, recursive bool) (*Tree, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/trees/%v", owner, repo, sha)
+	if recursive {
+		u += "?recursive=1"
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	t := new(Tree)
+	resp, err := s.client.Do(req, t)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return t, resp, err
+}
+
+// createTree represents the body of a CreateTree request.
+type createTree struct {
+	BaseTree string      `json:"base_tree,omitempty"`
+	Entries  []TreeEntry `json:"tree"`
+}
+
+// CreateTree creates a new tree in a repository.  If both a tree and a nested
+// path modifying that tree are specified, it will overwrite the contents of
+// that tree with the new path contents and write a new tree out.
+//
+// GitHub API docs: http://developer.github.com/v3/git/trees/#create-a-tree
+func (s *GitService) CreateTree(owner string, repo string, baseTree string, entries []TreeEntry) (*Tree, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/git/trees", owner, repo)
+
+	body := &createTree{
+		BaseTree: baseTree,
+		Entries:  entries,
+	}
+	req, err := s.client.NewRequest("POST", u, body)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	t := new(Tree)
+	resp, err := s.client.Do(req, t)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return t, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/github.go b/vendor/github.com/google/go-github/github/github.go
new file mode 100644
index 0000000..01e573d
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/github.go
@@ -0,0 +1,779 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"reflect"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/google/go-querystring/query"
+)
+
+const (
+	// StatusUnprocessableEntity is the status code returned when sending a request with invalid fields.
+	StatusUnprocessableEntity = 422
+)
+
+const (
+	libraryVersion = "0.1"
+	defaultBaseURL = "https://api.github.com/"
+	uploadBaseURL  = "https://uploads.github.com/"
+	userAgent      = "go-github/" + libraryVersion
+
+	headerRateLimit     = "X-RateLimit-Limit"
+	headerRateRemaining = "X-RateLimit-Remaining"
+	headerRateReset     = "X-RateLimit-Reset"
+	headerOTP           = "X-GitHub-OTP"
+
+	mediaTypeV3      = "application/vnd.github.v3+json"
+	defaultMediaType = "application/octet-stream"
+	mediaTypeV3SHA   = "application/vnd.github.v3.sha"
+
+	// Media Type values to access preview APIs
+
+	// https://developer.github.com/changes/2015-03-09-licenses-api/
+	mediaTypeLicensesPreview = "application/vnd.github.drax-preview+json"
+
+	// https://developer.github.com/changes/2014-12-09-new-attributes-for-stars-api/
+	mediaTypeStarringPreview = "application/vnd.github.v3.star+json"
+
+	// https://developer.github.com/changes/2015-06-24-api-enhancements-for-working-with-organization-permissions/
+	mediaTypeOrgPermissionPreview     = "application/vnd.github.ironman-preview+json"
+	mediaTypeOrgPermissionRepoPreview = "application/vnd.github.ironman-preview.repository+json"
+
+	// https://developer.github.com/changes/2015-11-11-protected-branches-api/
+	mediaTypeProtectedBranchesPreview = "application/vnd.github.loki-preview+json"
+
+	// https://developer.github.com/changes/2016-02-11-issue-locking-api/
+	mediaTypeIssueLockingPreview = "application/vnd.github.the-key-preview+json"
+
+	// https://help.github.com/enterprise/2.4/admin/guides/migrations/exporting-the-github-com-organization-s-repositories/
+	mediaTypeMigrationsPreview = "application/vnd.github.wyandotte-preview+json"
+
+	// https://developer.github.com/changes/2016-04-06-deployment-and-deployment-status-enhancements/
+	mediaTypeDeploymentStatusPreview = "application/vnd.github.ant-man-preview+json"
+
+	// https://developer.github.com/changes/2016-02-19-source-import-preview-api/
+	mediaTypeImportPreview = "application/vnd.github.barred-rock-preview"
+
+	// https://developer.github.com/changes/2016-05-12-reactions-api-preview/
+	mediaTypeReactionsPreview = "application/vnd.github.squirrel-girl-preview"
+)
+
+// A Client manages communication with the GitHub API.
+type Client struct {
+	// HTTP client used to communicate with the API.
+	client *http.Client
+	// clientMu protects the client during calls that modify the CheckRedirect func.
+	clientMu sync.Mutex
+
+	// Base URL for API requests.  Defaults to the public GitHub API, but can be
+	// set to a domain endpoint to use with GitHub Enterprise.  BaseURL should
+	// always be specified with a trailing slash.
+	BaseURL *url.URL
+
+	// Base URL for uploading files.
+	UploadURL *url.URL
+
+	// User agent used when communicating with the GitHub API.
+	UserAgent string
+
+	rateMu     sync.Mutex
+	rateLimits [categories]Rate // Rate limits for the client as determined by the most recent API calls.
+	mostRecent rateLimitCategory
+
+	// Services used for talking to different parts of the GitHub API.
+	Activity       *ActivityService
+	Authorizations *AuthorizationsService
+	Gists          *GistsService
+	Git            *GitService
+	Gitignores     *GitignoresService
+	Issues         *IssuesService
+	Organizations  *OrganizationsService
+	PullRequests   *PullRequestsService
+	Repositories   *RepositoriesService
+	Search         *SearchService
+	Users          *UsersService
+	Licenses       *LicensesService
+	Migrations     *MigrationService
+	Reactions      *ReactionsService
+}
+
+// ListOptions specifies the optional parameters to various List methods that
+// support pagination.
+type ListOptions struct {
+	// For paginated result sets, page of results to retrieve.
+	Page int `url:"page,omitempty"`
+
+	// For paginated result sets, the number of results to include per page.
+	PerPage int `url:"per_page,omitempty"`
+}
+
+// UploadOptions specifies the parameters to methods that support uploads.
+type UploadOptions struct {
+	Name string `url:"name,omitempty"`
+}
+
+// addOptions adds the parameters in opt as URL query parameters to s.  opt
+// must be a struct whose fields may contain "url" tags.
+func addOptions(s string, opt interface{}) (string, error) {
+	v := reflect.ValueOf(opt)
+	if v.Kind() == reflect.Ptr && v.IsNil() {
+		return s, nil
+	}
+
+	u, err := url.Parse(s)
+	if err != nil {
+		return s, err
+	}
+
+	qs, err := query.Values(opt)
+	if err != nil {
+		return s, err
+	}
+
+	u.RawQuery = qs.Encode()
+	return u.String(), nil
+}
+
+// NewClient returns a new GitHub API client.  If a nil httpClient is
+// provided, http.DefaultClient will be used.  To use API methods which require
+// authentication, provide an http.Client that will perform the authentication
+// for you (such as that provided by the golang.org/x/oauth2 library).
+func NewClient(httpClient *http.Client) *Client {
+	if httpClient == nil {
+		httpClient = http.DefaultClient
+	}
+	baseURL, _ := url.Parse(defaultBaseURL)
+	uploadURL, _ := url.Parse(uploadBaseURL)
+
+	c := &Client{client: httpClient, BaseURL: baseURL, UserAgent: userAgent, UploadURL: uploadURL}
+	c.Activity = &ActivityService{client: c}
+	c.Authorizations = &AuthorizationsService{client: c}
+	c.Gists = &GistsService{client: c}
+	c.Git = &GitService{client: c}
+	c.Gitignores = &GitignoresService{client: c}
+	c.Issues = &IssuesService{client: c}
+	c.Organizations = &OrganizationsService{client: c}
+	c.PullRequests = &PullRequestsService{client: c}
+	c.Repositories = &RepositoriesService{client: c}
+	c.Search = &SearchService{client: c}
+	c.Users = &UsersService{client: c}
+	c.Licenses = &LicensesService{client: c}
+	c.Migrations = &MigrationService{client: c}
+	c.Reactions = &ReactionsService{client: c}
+	return c
+}
+
+// NewRequest creates an API request. A relative URL can be provided in urlStr,
+// in which case it is resolved relative to the BaseURL of the Client.
+// Relative URLs should always be specified without a preceding slash.  If
+// specified, the value pointed to by body is JSON encoded and included as the
+// request body.
+func (c *Client) NewRequest(method, urlStr string, body interface{}) (*http.Request, error) {
+	rel, err := url.Parse(urlStr)
+	if err != nil {
+		return nil, err
+	}
+
+	u := c.BaseURL.ResolveReference(rel)
+
+	var buf io.ReadWriter
+	if body != nil {
+		buf = new(bytes.Buffer)
+		err := json.NewEncoder(buf).Encode(body)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	req, err := http.NewRequest(method, u.String(), buf)
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header.Add("Accept", mediaTypeV3)
+	if c.UserAgent != "" {
+		req.Header.Add("User-Agent", c.UserAgent)
+	}
+	return req, nil
+}
+
+// NewUploadRequest creates an upload request. A relative URL can be provided in
+// urlStr, in which case it is resolved relative to the UploadURL of the Client.
+// Relative URLs should always be specified without a preceding slash.
+func (c *Client) NewUploadRequest(urlStr string, reader io.Reader, size int64, mediaType string) (*http.Request, error) {
+	rel, err := url.Parse(urlStr)
+	if err != nil {
+		return nil, err
+	}
+
+	u := c.UploadURL.ResolveReference(rel)
+	req, err := http.NewRequest("POST", u.String(), reader)
+	if err != nil {
+		return nil, err
+	}
+	req.ContentLength = size
+
+	if len(mediaType) == 0 {
+		mediaType = defaultMediaType
+	}
+	req.Header.Add("Content-Type", mediaType)
+	req.Header.Add("Accept", mediaTypeV3)
+	req.Header.Add("User-Agent", c.UserAgent)
+	return req, nil
+}
+
+// Response is a GitHub API response.  This wraps the standard http.Response
+// returned from GitHub and provides convenient access to things like
+// pagination links.
+type Response struct {
+	*http.Response
+
+	// These fields provide the page values for paginating through a set of
+	// results.  Any or all of these may be set to the zero value for
+	// responses that are not part of a paginated set, or for which there
+	// are no additional pages.
+
+	NextPage  int
+	PrevPage  int
+	FirstPage int
+	LastPage  int
+
+	Rate
+}
+
+// newResponse creates a new Response for the provided http.Response.
+func newResponse(r *http.Response) *Response {
+	response := &Response{Response: r}
+	response.populatePageValues()
+	response.Rate = parseRate(r)
+	return response
+}
+
+// populatePageValues parses the HTTP Link response headers and populates the
+// various pagination link values in the Response.
+func (r *Response) populatePageValues() {
+	if links, ok := r.Response.Header["Link"]; ok && len(links) > 0 {
+		for _, link := range strings.Split(links[0], ",") {
+			segments := strings.Split(strings.TrimSpace(link), ";")
+
+			// link must at least have href and rel
+			if len(segments) < 2 {
+				continue
+			}
+
+			// ensure href is properly formatted
+			if !strings.HasPrefix(segments[0], "<") || !strings.HasSuffix(segments[0], ">") {
+				continue
+			}
+
+			// try to pull out page parameter
+			url, err := url.Parse(segments[0][1 : len(segments[0])-1])
+			if err != nil {
+				continue
+			}
+			page := url.Query().Get("page")
+			if page == "" {
+				continue
+			}
+
+			for _, segment := range segments[1:] {
+				switch strings.TrimSpace(segment) {
+				case `rel="next"`:
+					r.NextPage, _ = strconv.Atoi(page)
+				case `rel="prev"`:
+					r.PrevPage, _ = strconv.Atoi(page)
+				case `rel="first"`:
+					r.FirstPage, _ = strconv.Atoi(page)
+				case `rel="last"`:
+					r.LastPage, _ = strconv.Atoi(page)
+				}
+
+			}
+		}
+	}
+}
+
+// parseRate parses the rate related headers.
+func parseRate(r *http.Response) Rate {
+	var rate Rate
+	if limit := r.Header.Get(headerRateLimit); limit != "" {
+		rate.Limit, _ = strconv.Atoi(limit)
+	}
+	if remaining := r.Header.Get(headerRateRemaining); remaining != "" {
+		rate.Remaining, _ = strconv.Atoi(remaining)
+	}
+	if reset := r.Header.Get(headerRateReset); reset != "" {
+		if v, _ := strconv.ParseInt(reset, 10, 64); v != 0 {
+			rate.Reset = Timestamp{time.Unix(v, 0)}
+		}
+	}
+	return rate
+}
+
+// Rate specifies the current rate limit for the client as determined by the
+// most recent API call.  If the client is used in a multi-user application,
+// this rate may not always be up-to-date.
+//
+// Deprecated: Use the Response.Rate returned from most recent API call instead.
+// Call RateLimits() to check the current rate.
+func (c *Client) Rate() Rate {
+	c.rateMu.Lock()
+	rate := c.rateLimits[c.mostRecent]
+	c.rateMu.Unlock()
+	return rate
+}
+
+// Do sends an API request and returns the API response.  The API response is
+// JSON decoded and stored in the value pointed to by v, or returned as an
+// error if an API error has occurred.  If v implements the io.Writer
+// interface, the raw response body will be written to v, without attempting to
+// first decode it.  If rate limit is exceeded and reset time is in the future,
+// Do returns *RateLimitError immediately without making a network API call.
+func (c *Client) Do(req *http.Request, v interface{}) (*Response, error) {
+	rateLimitCategory := category(req.URL.Path)
+
+	// If we've hit rate limit, don't make further requests before Reset time.
+	if err := c.checkRateLimitBeforeDo(req, rateLimitCategory); err != nil {
+		return nil, err
+	}
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	defer func() {
+		// Drain up to 512 bytes and close the body to let the Transport reuse the connection
+		io.CopyN(ioutil.Discard, resp.Body, 512)
+		resp.Body.Close()
+	}()
+
+	response := newResponse(resp)
+
+	c.rateMu.Lock()
+	c.rateLimits[rateLimitCategory] = response.Rate
+	c.mostRecent = rateLimitCategory
+	c.rateMu.Unlock()
+
+	err = CheckResponse(resp)
+	if err != nil {
+		// even though there was an error, we still return the response
+		// in case the caller wants to inspect it further
+		return response, err
+	}
+
+	if v != nil {
+		if w, ok := v.(io.Writer); ok {
+			io.Copy(w, resp.Body)
+		} else {
+			err = json.NewDecoder(resp.Body).Decode(v)
+			if err == io.EOF {
+				err = nil // ignore EOF errors caused by empty response body
+			}
+		}
+	}
+
+	return response, err
+}
+
+// checkRateLimitBeforeDo does not make any network calls, but uses existing knowledge from
+// current client state in order to quickly check if *RateLimitError can be immediately returned
+// from Client.Do, and if so, returns it so that Client.Do can skip making a network API call unneccessarily.
+// Otherwise it returns nil, and Client.Do should proceed normally.
+func (c *Client) checkRateLimitBeforeDo(req *http.Request, rateLimitCategory rateLimitCategory) error {
+	c.rateMu.Lock()
+	rate := c.rateLimits[rateLimitCategory]
+	c.rateMu.Unlock()
+	if !rate.Reset.Time.IsZero() && rate.Remaining == 0 && time.Now().Before(rate.Reset.Time) {
+		// Create a fake response.
+		resp := &http.Response{
+			Status:     http.StatusText(http.StatusForbidden),
+			StatusCode: http.StatusForbidden,
+			Request:    req,
+			Header:     make(http.Header),
+			Body:       ioutil.NopCloser(strings.NewReader("")),
+		}
+		return &RateLimitError{
+			Rate:     rate,
+			Response: resp,
+			Message:  fmt.Sprintf("API rate limit of %v still exceeded until %v, not making remote request.", rate.Limit, rate.Reset.Time),
+		}
+	}
+
+	return nil
+}
+
+/*
+An ErrorResponse reports one or more errors caused by an API request.
+
+GitHub API docs: http://developer.github.com/v3/#client-errors
+*/
+type ErrorResponse struct {
+	Response *http.Response // HTTP response that caused this error
+	Message  string         `json:"message"` // error message
+	Errors   []Error        `json:"errors"`  // more detail on individual errors
+	// Block is only populated on certain types of errors such as code 451.
+	// See https://developer.github.com/changes/2016-03-17-the-451-status-code-is-now-supported/
+	// for more information.
+	Block *struct {
+		Reason    string     `json:"reason,omitempty"`
+		CreatedAt *Timestamp `json:"created_at,omitempty"`
+	} `json:"block,omitempty"`
+}
+
+func (r *ErrorResponse) Error() string {
+	return fmt.Sprintf("%v %v: %d %v %+v",
+		r.Response.Request.Method, sanitizeURL(r.Response.Request.URL),
+		r.Response.StatusCode, r.Message, r.Errors)
+}
+
+// TwoFactorAuthError occurs when using HTTP Basic Authentication for a user
+// that has two-factor authentication enabled.  The request can be reattempted
+// by providing a one-time password in the request.
+type TwoFactorAuthError ErrorResponse
+
+func (r *TwoFactorAuthError) Error() string { return (*ErrorResponse)(r).Error() }
+
+// RateLimitError occurs when GitHub returns 403 Forbidden response with a rate limit
+// remaining value of 0, and error message starts with "API rate limit exceeded for ".
+type RateLimitError struct {
+	Rate     Rate           // Rate specifies last known rate limit for the client
+	Response *http.Response // HTTP response that caused this error
+	Message  string         `json:"message"` // error message
+}
+
+func (r *RateLimitError) Error() string {
+	return fmt.Sprintf("%v %v: %d %v; rate reset in %v",
+		r.Response.Request.Method, sanitizeURL(r.Response.Request.URL),
+		r.Response.StatusCode, r.Message, r.Rate.Reset.Time.Sub(time.Now()))
+}
+
+// sanitizeURL redacts the client_secret parameter from the URL which may be
+// exposed to the user, specifically in the ErrorResponse error message.
+func sanitizeURL(uri *url.URL) *url.URL {
+	if uri == nil {
+		return nil
+	}
+	params := uri.Query()
+	if len(params.Get("client_secret")) > 0 {
+		params.Set("client_secret", "REDACTED")
+		uri.RawQuery = params.Encode()
+	}
+	return uri
+}
+
+/*
+An Error reports more details on an individual error in an ErrorResponse.
+These are the possible validation error codes:
+
+    missing:
+        resource does not exist
+    missing_field:
+        a required field on a resource has not been set
+    invalid:
+        the formatting of a field is invalid
+    already_exists:
+        another resource has the same valid as this field
+
+GitHub API docs: http://developer.github.com/v3/#client-errors
+*/
+type Error struct {
+	Resource string `json:"resource"` // resource on which the error occurred
+	Field    string `json:"field"`    // field on which the error occurred
+	Code     string `json:"code"`     // validation error code
+}
+
+func (e *Error) Error() string {
+	return fmt.Sprintf("%v error caused by %v field on %v resource",
+		e.Code, e.Field, e.Resource)
+}
+
+// CheckResponse checks the API response for errors, and returns them if
+// present.  A response is considered an error if it has a status code outside
+// the 200 range.  API error responses are expected to have either no response
+// body, or a JSON response body that maps to ErrorResponse.  Any other
+// response body will be silently ignored.
+//
+// The error type will be *RateLimitError for rate limit exceeded errors,
+// and *TwoFactorAuthError for two-factor authentication errors.
+func CheckResponse(r *http.Response) error {
+	if c := r.StatusCode; 200 <= c && c <= 299 {
+		return nil
+	}
+	errorResponse := &ErrorResponse{Response: r}
+	data, err := ioutil.ReadAll(r.Body)
+	if err == nil && data != nil {
+		json.Unmarshal(data, errorResponse)
+	}
+	switch {
+	case r.StatusCode == http.StatusUnauthorized && strings.HasPrefix(r.Header.Get(headerOTP), "required"):
+		return (*TwoFactorAuthError)(errorResponse)
+	case r.StatusCode == http.StatusForbidden && r.Header.Get(headerRateRemaining) == "0" && strings.HasPrefix(errorResponse.Message, "API rate limit exceeded for "):
+		return &RateLimitError{
+			Rate:     parseRate(r),
+			Response: errorResponse.Response,
+			Message:  errorResponse.Message,
+		}
+	default:
+		return errorResponse
+	}
+}
+
+// parseBoolResponse determines the boolean result from a GitHub API response.
+// Several GitHub API methods return boolean responses indicated by the HTTP
+// status code in the response (true indicated by a 204, false indicated by a
+// 404).  This helper function will determine that result and hide the 404
+// error if present.  Any other error will be returned through as-is.
+func parseBoolResponse(err error) (bool, error) {
+	if err == nil {
+		return true, nil
+	}
+
+	if err, ok := err.(*ErrorResponse); ok && err.Response.StatusCode == http.StatusNotFound {
+		// Simply false.  In this one case, we do not pass the error through.
+		return false, nil
+	}
+
+	// some other real error occurred
+	return false, err
+}
+
+// Rate represents the rate limit for the current client.
+type Rate struct {
+	// The number of requests per hour the client is currently limited to.
+	Limit int `json:"limit"`
+
+	// The number of remaining requests the client can make this hour.
+	Remaining int `json:"remaining"`
+
+	// The time at which the current rate limit will reset.
+	Reset Timestamp `json:"reset"`
+}
+
+func (r Rate) String() string {
+	return Stringify(r)
+}
+
+// RateLimits represents the rate limits for the current client.
+type RateLimits struct {
+	// The rate limit for non-search API requests.  Unauthenticated
+	// requests are limited to 60 per hour.  Authenticated requests are
+	// limited to 5,000 per hour.
+	//
+	// GitHub API docs: https://developer.github.com/v3/#rate-limiting
+	Core *Rate `json:"core"`
+
+	// The rate limit for search API requests.  Unauthenticated requests
+	// are limited to 5 requests per minutes.  Authenticated requests are
+	// limited to 20 per minute.
+	//
+	// GitHub API docs: https://developer.github.com/v3/search/#rate-limit
+	Search *Rate `json:"search"`
+}
+
+func (r RateLimits) String() string {
+	return Stringify(r)
+}
+
+type rateLimitCategory uint8
+
+const (
+	coreCategory rateLimitCategory = iota
+	searchCategory
+
+	categories // An array of this length will be able to contain all rate limit categories.
+)
+
+// category returns the rate limit category of the endpoint, determined by Request.URL.Path.
+func category(path string) rateLimitCategory {
+	switch {
+	default:
+		return coreCategory
+	case strings.HasPrefix(path, "/search/"):
+		return searchCategory
+	}
+}
+
+// Deprecated: RateLimit is deprecated, use RateLimits instead.
+func (c *Client) RateLimit() (*Rate, *Response, error) {
+	limits, resp, err := c.RateLimits()
+	if limits == nil {
+		return nil, nil, err
+	}
+
+	return limits.Core, resp, err
+}
+
+// RateLimits returns the rate limits for the current client.
+func (c *Client) RateLimits() (*RateLimits, *Response, error) {
+	req, err := c.NewRequest("GET", "rate_limit", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	response := new(struct {
+		Resources *RateLimits `json:"resources"`
+	})
+	resp, err := c.Do(req, response)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if response.Resources != nil {
+		c.rateMu.Lock()
+		if response.Resources.Core != nil {
+			c.rateLimits[coreCategory] = *response.Resources.Core
+		}
+		if response.Resources.Search != nil {
+			c.rateLimits[searchCategory] = *response.Resources.Search
+		}
+		c.rateMu.Unlock()
+	}
+
+	return response.Resources, resp, err
+}
+
+/*
+UnauthenticatedRateLimitedTransport allows you to make unauthenticated calls
+that need to use a higher rate limit associated with your OAuth application.
+
+	t := &github.UnauthenticatedRateLimitedTransport{
+		ClientID:     "your app's client ID",
+		ClientSecret: "your app's client secret",
+	}
+	client := github.NewClient(t.Client())
+
+This will append the querystring params client_id=xxx&client_secret=yyy to all
+requests.
+
+See http://developer.github.com/v3/#unauthenticated-rate-limited-requests for
+more information.
+*/
+type UnauthenticatedRateLimitedTransport struct {
+	// ClientID is the GitHub OAuth client ID of the current application, which
+	// can be found by selecting its entry in the list at
+	// https://github.com/settings/applications.
+	ClientID string
+
+	// ClientSecret is the GitHub OAuth client secret of the current
+	// application.
+	ClientSecret string
+
+	// Transport is the underlying HTTP transport to use when making requests.
+	// It will default to http.DefaultTransport if nil.
+	Transport http.RoundTripper
+}
+
+// RoundTrip implements the RoundTripper interface.
+func (t *UnauthenticatedRateLimitedTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	if t.ClientID == "" {
+		return nil, errors.New("t.ClientID is empty")
+	}
+	if t.ClientSecret == "" {
+		return nil, errors.New("t.ClientSecret is empty")
+	}
+
+	// To set extra querystring params, we must make a copy of the Request so
+	// that we don't modify the Request we were given. This is required by the
+	// specification of http.RoundTripper.
+	req = cloneRequest(req)
+	q := req.URL.Query()
+	q.Set("client_id", t.ClientID)
+	q.Set("client_secret", t.ClientSecret)
+	req.URL.RawQuery = q.Encode()
+
+	// Make the HTTP request.
+	return t.transport().RoundTrip(req)
+}
+
+// Client returns an *http.Client that makes requests which are subject to the
+// rate limit of your OAuth application.
+func (t *UnauthenticatedRateLimitedTransport) Client() *http.Client {
+	return &http.Client{Transport: t}
+}
+
+func (t *UnauthenticatedRateLimitedTransport) transport() http.RoundTripper {
+	if t.Transport != nil {
+		return t.Transport
+	}
+	return http.DefaultTransport
+}
+
+// BasicAuthTransport is an http.RoundTripper that authenticates all requests
+// using HTTP Basic Authentication with the provided username and password.  It
+// additionally supports users who have two-factor authentication enabled on
+// their GitHub account.
+type BasicAuthTransport struct {
+	Username string // GitHub username
+	Password string // GitHub password
+	OTP      string // one-time password for users with two-factor auth enabled
+
+	// Transport is the underlying HTTP transport to use when making requests.
+	// It will default to http.DefaultTransport if nil.
+	Transport http.RoundTripper
+}
+
+// RoundTrip implements the RoundTripper interface.
+func (t *BasicAuthTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	req = cloneRequest(req) // per RoundTrip contract
+	req.SetBasicAuth(t.Username, t.Password)
+	if t.OTP != "" {
+		req.Header.Add(headerOTP, t.OTP)
+	}
+	return t.transport().RoundTrip(req)
+}
+
+// Client returns an *http.Client that makes requests that are authenticated
+// using HTTP Basic Authentication.
+func (t *BasicAuthTransport) Client() *http.Client {
+	return &http.Client{Transport: t}
+}
+
+func (t *BasicAuthTransport) transport() http.RoundTripper {
+	if t.Transport != nil {
+		return t.Transport
+	}
+	return http.DefaultTransport
+}
+
+// cloneRequest returns a clone of the provided *http.Request. The clone is a
+// shallow copy of the struct and its Header map.
+func cloneRequest(r *http.Request) *http.Request {
+	// shallow copy of the struct
+	r2 := new(http.Request)
+	*r2 = *r
+	// deep copy of the Header
+	r2.Header = make(http.Header, len(r.Header))
+	for k, s := range r.Header {
+		r2.Header[k] = append([]string(nil), s...)
+	}
+	return r2
+}
+
+// Bool is a helper routine that allocates a new bool value
+// to store v and returns a pointer to it.
+func Bool(v bool) *bool { return &v }
+
+// Int is a helper routine that allocates a new int value
+// to store v and returns a pointer to it.
+func Int(v int) *int { return &v }
+
+// String is a helper routine that allocates a new string value
+// to store v and returns a pointer to it.
+func String(v string) *string { return &v }
diff --git a/vendor/github.com/google/go-github/github/gitignore.go b/vendor/github.com/google/go-github/github/gitignore.go
new file mode 100644
index 0000000..31d5902
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/gitignore.go
@@ -0,0 +1,63 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// GitignoresService provides access to the gitignore related functions in the
+// GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/gitignore/
+type GitignoresService struct {
+	client *Client
+}
+
+// Gitignore represents a .gitignore file as returned by the GitHub API.
+type Gitignore struct {
+	Name   *string `json:"name,omitempty"`
+	Source *string `json:"source,omitempty"`
+}
+
+func (g Gitignore) String() string {
+	return Stringify(g)
+}
+
+// List all available Gitignore templates.
+//
+// http://developer.github.com/v3/gitignore/#listing-available-templates
+func (s GitignoresService) List() ([]string, *Response, error) {
+	req, err := s.client.NewRequest("GET", "gitignore/templates", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	availableTemplates := new([]string)
+	resp, err := s.client.Do(req, availableTemplates)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *availableTemplates, resp, err
+}
+
+// Get a Gitignore by name.
+//
+// http://developer.github.com/v3/gitignore/#get-a-single-template
+func (s GitignoresService) Get(name string) (*Gitignore, *Response, error) {
+	u := fmt.Sprintf("gitignore/templates/%v", name)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	gitignore := new(Gitignore)
+	resp, err := s.client.Do(req, gitignore)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return gitignore, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/issues.go b/vendor/github.com/google/go-github/github/issues.go
new file mode 100644
index 0000000..d380dd3
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/issues.go
@@ -0,0 +1,304 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// IssuesService handles communication with the issue related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/
+type IssuesService struct {
+	client *Client
+}
+
+// Issue represents a GitHub issue on a repository.
+type Issue struct {
+	Number           *int              `json:"number,omitempty"`
+	State            *string           `json:"state,omitempty"`
+	Title            *string           `json:"title,omitempty"`
+	Body             *string           `json:"body,omitempty"`
+	User             *User             `json:"user,omitempty"`
+	Labels           []Label           `json:"labels,omitempty"`
+	Assignee         *User             `json:"assignee,omitempty"`
+	Comments         *int              `json:"comments,omitempty"`
+	ClosedAt         *time.Time        `json:"closed_at,omitempty"`
+	CreatedAt        *time.Time        `json:"created_at,omitempty"`
+	UpdatedAt        *time.Time        `json:"updated_at,omitempty"`
+	URL              *string           `json:"url,omitempty"`
+	HTMLURL          *string           `json:"html_url,omitempty"`
+	Milestone        *Milestone        `json:"milestone,omitempty"`
+	PullRequestLinks *PullRequestLinks `json:"pull_request,omitempty"`
+	Repository       *Repository       `json:"repository,omitempty"`
+	Reactions        *Reactions        `json:"reactions,omitempty"`
+
+	// TextMatches is only populated from search results that request text matches
+	// See: search.go and https://developer.github.com/v3/search/#text-match-metadata
+	TextMatches []TextMatch `json:"text_matches,omitempty"`
+}
+
+func (i Issue) String() string {
+	return Stringify(i)
+}
+
+// IssueRequest represents a request to create/edit an issue.
+// It is separate from Issue above because otherwise Labels
+// and Assignee fail to serialize to the correct JSON.
+type IssueRequest struct {
+	Title     *string   `json:"title,omitempty"`
+	Body      *string   `json:"body,omitempty"`
+	Labels    *[]string `json:"labels,omitempty"`
+	Assignee  *string   `json:"assignee,omitempty"`
+	State     *string   `json:"state,omitempty"`
+	Milestone *int      `json:"milestone,omitempty"`
+}
+
+// IssueListOptions specifies the optional parameters to the IssuesService.List
+// and IssuesService.ListByOrg methods.
+type IssueListOptions struct {
+	// Filter specifies which issues to list.  Possible values are: assigned,
+	// created, mentioned, subscribed, all.  Default is "assigned".
+	Filter string `url:"filter,omitempty"`
+
+	// State filters issues based on their state.  Possible values are: open,
+	// closed, all.  Default is "open".
+	State string `url:"state,omitempty"`
+
+	// Labels filters issues based on their label.
+	Labels []string `url:"labels,comma,omitempty"`
+
+	// Sort specifies how to sort issues.  Possible values are: created, updated,
+	// and comments.  Default value is "created".
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort issues.  Possible values are: asc, desc.
+	// Default is "desc".
+	Direction string `url:"direction,omitempty"`
+
+	// Since filters issues by time.
+	Since time.Time `url:"since,omitempty"`
+
+	ListOptions
+}
+
+// PullRequestLinks object is added to the Issue object when it's an issue included
+// in the IssueCommentEvent webhook payload, if the webhooks is fired by a comment on a PR
+type PullRequestLinks struct {
+	URL      *string `json:"url,omitempty"`
+	HTMLURL  *string `json:"html_url,omitempty"`
+	DiffURL  *string `json:"diff_url,omitempty"`
+	PatchURL *string `json:"patch_url,omitempty"`
+}
+
+// List the issues for the authenticated user.  If all is true, list issues
+// across all the user's visible repositories including owned, member, and
+// organization repositories; if false, list only owned and member
+// repositories.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/#list-issues
+func (s *IssuesService) List(all bool, opt *IssueListOptions) ([]Issue, *Response, error) {
+	var u string
+	if all {
+		u = "issues"
+	} else {
+		u = "user/issues"
+	}
+	return s.listIssues(u, opt)
+}
+
+// ListByOrg fetches the issues in the specified organization for the
+// authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/#list-issues
+func (s *IssuesService) ListByOrg(org string, opt *IssueListOptions) ([]Issue, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/issues", org)
+	return s.listIssues(u, opt)
+}
+
+func (s *IssuesService) listIssues(u string, opt *IssueListOptions) ([]Issue, *Response, error) {
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	issues := new([]Issue)
+	resp, err := s.client.Do(req, issues)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *issues, resp, err
+}
+
+// IssueListByRepoOptions specifies the optional parameters to the
+// IssuesService.ListByRepo method.
+type IssueListByRepoOptions struct {
+	// Milestone limits issues for the specified milestone.  Possible values are
+	// a milestone number, "none" for issues with no milestone, "*" for issues
+	// with any milestone.
+	Milestone string `url:"milestone,omitempty"`
+
+	// State filters issues based on their state.  Possible values are: open,
+	// closed, all.  Default is "open".
+	State string `url:"state,omitempty"`
+
+	// Assignee filters issues based on their assignee.  Possible values are a
+	// user name, "none" for issues that are not assigned, "*" for issues with
+	// any assigned user.
+	Assignee string `url:"assignee,omitempty"`
+
+	// Creator filters issues based on their creator.
+	Creator string `url:"creator,omitempty"`
+
+	// Mentioned filters issues to those mentioned a specific user.
+	Mentioned string `url:"mentioned,omitempty"`
+
+	// Labels filters issues based on their label.
+	Labels []string `url:"labels,omitempty,comma"`
+
+	// Sort specifies how to sort issues.  Possible values are: created, updated,
+	// and comments.  Default value is "created".
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort issues.  Possible values are: asc, desc.
+	// Default is "desc".
+	Direction string `url:"direction,omitempty"`
+
+	// Since filters issues by time.
+	Since time.Time `url:"since,omitempty"`
+
+	ListOptions
+}
+
+// ListByRepo lists the issues for the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/#list-issues-for-a-repository
+func (s *IssuesService) ListByRepo(owner string, repo string, opt *IssueListByRepoOptions) ([]Issue, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	issues := new([]Issue)
+	resp, err := s.client.Do(req, issues)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *issues, resp, err
+}
+
+// Get a single issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/#get-a-single-issue
+func (s *IssuesService) Get(owner string, repo string, number int) (*Issue, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d", owner, repo, number)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	issue := new(Issue)
+	resp, err := s.client.Do(req, issue)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return issue, resp, err
+}
+
+// Create a new issue on the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/#create-an-issue
+func (s *IssuesService) Create(owner string, repo string, issue *IssueRequest) (*Issue, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues", owner, repo)
+	req, err := s.client.NewRequest("POST", u, issue)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	i := new(Issue)
+	resp, err := s.client.Do(req, i)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return i, resp, err
+}
+
+// Edit an issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/#edit-an-issue
+func (s *IssuesService) Edit(owner string, repo string, number int, issue *IssueRequest) (*Issue, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d", owner, repo, number)
+	req, err := s.client.NewRequest("PATCH", u, issue)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	i := new(Issue)
+	resp, err := s.client.Do(req, i)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return i, resp, err
+}
+
+// Lock an issue's conversation.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/#lock-an-issue
+func (s *IssuesService) Lock(owner string, repo string, number int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/lock", owner, repo, number)
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeIssueLockingPreview)
+
+	return s.client.Do(req, nil)
+}
+
+// Unlock an issue's conversation.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/#unlock-an-issue
+func (s *IssuesService) Unlock(owner string, repo string, number int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/lock", owner, repo, number)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeIssueLockingPreview)
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/issues_assignees.go b/vendor/github.com/google/go-github/github/issues_assignees.go
new file mode 100644
index 0000000..6338c22
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/issues_assignees.go
@@ -0,0 +1,46 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// ListAssignees fetches all available assignees (owners and collaborators) to
+// which issues may be assigned.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/assignees/#list-assignees
+func (s *IssuesService) ListAssignees(owner string, repo string, opt *ListOptions) ([]User, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/assignees", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	assignees := new([]User)
+	resp, err := s.client.Do(req, assignees)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *assignees, resp, err
+}
+
+// IsAssignee checks if a user is an assignee for the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/assignees/#check-assignee
+func (s *IssuesService) IsAssignee(owner string, repo string, user string) (bool, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/assignees/%v", owner, repo, user)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+	resp, err := s.client.Do(req, nil)
+	assignee, err := parseBoolResponse(err)
+	return assignee, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/issues_comments.go b/vendor/github.com/google/go-github/github/issues_comments.go
new file mode 100644
index 0000000..6dbc31e
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/issues_comments.go
@@ -0,0 +1,147 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// IssueComment represents a comment left on an issue.
+type IssueComment struct {
+	ID        *int       `json:"id,omitempty"`
+	Body      *string    `json:"body,omitempty"`
+	User      *User      `json:"user,omitempty"`
+	Reactions *Reactions `json:"reactions,omitempty"`
+	CreatedAt *time.Time `json:"created_at,omitempty"`
+	UpdatedAt *time.Time `json:"updated_at,omitempty"`
+	URL       *string    `json:"url,omitempty"`
+	HTMLURL   *string    `json:"html_url,omitempty"`
+	IssueURL  *string    `json:"issue_url,omitempty"`
+}
+
+func (i IssueComment) String() string {
+	return Stringify(i)
+}
+
+// IssueListCommentsOptions specifies the optional parameters to the
+// IssuesService.ListComments method.
+type IssueListCommentsOptions struct {
+	// Sort specifies how to sort comments.  Possible values are: created, updated.
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort comments.  Possible values are: asc, desc.
+	Direction string `url:"direction,omitempty"`
+
+	// Since filters comments by time.
+	Since time.Time `url:"since,omitempty"`
+
+	ListOptions
+}
+
+// ListComments lists all comments on the specified issue.  Specifying an issue
+// number of 0 will return all comments on all issues for the repository.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/comments/#list-comments-on-an-issue
+func (s *IssuesService) ListComments(owner string, repo string, number int, opt *IssueListCommentsOptions) ([]IssueComment, *Response, error) {
+	var u string
+	if number == 0 {
+		u = fmt.Sprintf("repos/%v/%v/issues/comments", owner, repo)
+	} else {
+		u = fmt.Sprintf("repos/%v/%v/issues/%d/comments", owner, repo, number)
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	comments := new([]IssueComment)
+	resp, err := s.client.Do(req, comments)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *comments, resp, err
+}
+
+// GetComment fetches the specified issue comment.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/comments/#get-a-single-comment
+func (s *IssuesService) GetComment(owner string, repo string, id int) (*IssueComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/comments/%d", owner, repo, id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	comment := new(IssueComment)
+	resp, err := s.client.Do(req, comment)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return comment, resp, err
+}
+
+// CreateComment creates a new comment on the specified issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/comments/#create-a-comment
+func (s *IssuesService) CreateComment(owner string, repo string, number int, comment *IssueComment) (*IssueComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/comments", owner, repo, number)
+	req, err := s.client.NewRequest("POST", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+	c := new(IssueComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// EditComment updates an issue comment.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/comments/#edit-a-comment
+func (s *IssuesService) EditComment(owner string, repo string, id int, comment *IssueComment) (*IssueComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/comments/%d", owner, repo, id)
+	req, err := s.client.NewRequest("PATCH", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+	c := new(IssueComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// DeleteComment deletes an issue comment.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/comments/#delete-a-comment
+func (s *IssuesService) DeleteComment(owner string, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/comments/%d", owner, repo, id)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/issues_events.go b/vendor/github.com/google/go-github/github/issues_events.go
new file mode 100644
index 0000000..9062d4d
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/issues_events.go
@@ -0,0 +1,149 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// IssueEvent represents an event that occurred around an Issue or Pull Request.
+type IssueEvent struct {
+	ID  *int    `json:"id,omitempty"`
+	URL *string `json:"url,omitempty"`
+
+	// The User that generated this event.
+	Actor *User `json:"actor,omitempty"`
+
+	// Event identifies the actual type of Event that occurred.  Possible
+	// values are:
+	//
+	//     closed
+	//       The Actor closed the issue.
+	//       If the issue was closed by commit message, CommitID holds the SHA1 hash of the commit.
+	//
+	//     merged
+	//       The Actor merged into master a branch containing a commit mentioning the issue.
+	//       CommitID holds the SHA1 of the merge commit.
+	//
+	//     referenced
+	//       The Actor committed to master a commit mentioning the issue in its commit message.
+	//       CommitID holds the SHA1 of the commit.
+	//
+	//     reopened, locked, unlocked
+	//       The Actor did that to the issue.
+	//
+	//     renamed
+	//       The Actor changed the issue title from Rename.From to Rename.To.
+	//
+	//     mentioned
+	//       Someone unspecified @mentioned the Actor [sic] in an issue comment body.
+	//
+	//     assigned, unassigned
+	//       The Actor assigned the issue to or removed the assignment from the Assignee.
+	//
+	//     labeled, unlabeled
+	//       The Actor added or removed the Label from the issue.
+	//
+	//     milestoned, demilestoned
+	//       The Actor added or removed the issue from the Milestone.
+	//
+	//     subscribed, unsubscribed
+	//       The Actor subscribed to or unsubscribed from notifications for an issue.
+	//
+	//     head_ref_deleted, head_ref_restored
+	//       The pull request’s branch was deleted or restored.
+	//
+	Event *string `json:"event,omitempty"`
+
+	CreatedAt *time.Time `json:"created_at,omitempty"`
+	Issue     *Issue     `json:"issue,omitempty"`
+
+	// Only present on certain events; see above.
+	Assignee  *User      `json:"assignee,omitempty"`
+	CommitID  *string    `json:"commit_id,omitempty"`
+	Milestone *Milestone `json:"milestone,omitempty"`
+	Label     *Label     `json:"label,omitempty"`
+	Rename    *Rename    `json:"rename,omitempty"`
+}
+
+// ListIssueEvents lists events for the specified issue.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/events/#list-events-for-an-issue
+func (s *IssuesService) ListIssueEvents(owner, repo string, number int, opt *ListOptions) ([]IssueEvent, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%v/events", owner, repo, number)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var events []IssueEvent
+	resp, err := s.client.Do(req, &events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return events, resp, err
+}
+
+// ListRepositoryEvents lists events for the specified repository.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/events/#list-events-for-a-repository
+func (s *IssuesService) ListRepositoryEvents(owner, repo string, opt *ListOptions) ([]IssueEvent, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/events", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var events []IssueEvent
+	resp, err := s.client.Do(req, &events)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return events, resp, err
+}
+
+// GetEvent returns the specified issue event.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/events/#get-a-single-event
+func (s *IssuesService) GetEvent(owner, repo string, id int) (*IssueEvent, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/events/%v", owner, repo, id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	event := new(IssueEvent)
+	resp, err := s.client.Do(req, event)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return event, resp, err
+}
+
+// Rename contains details for 'renamed' events.
+type Rename struct {
+	From *string `json:"from,omitempty"`
+	To   *string `json:"to,omitempty"`
+}
+
+func (r Rename) String() string {
+	return Stringify(r)
+}
diff --git a/vendor/github.com/google/go-github/github/issues_labels.go b/vendor/github.com/google/go-github/github/issues_labels.go
new file mode 100644
index 0000000..88f9f3f
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/issues_labels.go
@@ -0,0 +1,222 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Label represents a GitHub label on an Issue
+type Label struct {
+	URL   *string `json:"url,omitempty"`
+	Name  *string `json:"name,omitempty"`
+	Color *string `json:"color,omitempty"`
+}
+
+func (l Label) String() string {
+	return fmt.Sprint(*l.Name)
+}
+
+// ListLabels lists all labels for a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#list-all-labels-for-this-repository
+func (s *IssuesService) ListLabels(owner string, repo string, opt *ListOptions) ([]Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/labels", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	labels := new([]Label)
+	resp, err := s.client.Do(req, labels)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *labels, resp, err
+}
+
+// GetLabel gets a single label.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#get-a-single-label
+func (s *IssuesService) GetLabel(owner string, repo string, name string) (*Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/labels/%v", owner, repo, name)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	label := new(Label)
+	resp, err := s.client.Do(req, label)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return label, resp, err
+}
+
+// CreateLabel creates a new label on the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#create-a-label
+func (s *IssuesService) CreateLabel(owner string, repo string, label *Label) (*Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/labels", owner, repo)
+	req, err := s.client.NewRequest("POST", u, label)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	l := new(Label)
+	resp, err := s.client.Do(req, l)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return l, resp, err
+}
+
+// EditLabel edits a label.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#update-a-label
+func (s *IssuesService) EditLabel(owner string, repo string, name string, label *Label) (*Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/labels/%v", owner, repo, name)
+	req, err := s.client.NewRequest("PATCH", u, label)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	l := new(Label)
+	resp, err := s.client.Do(req, l)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return l, resp, err
+}
+
+// DeleteLabel deletes a label.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#delete-a-label
+func (s *IssuesService) DeleteLabel(owner string, repo string, name string) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/labels/%v", owner, repo, name)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// ListLabelsByIssue lists all labels for an issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#list-all-labels-for-this-repository
+func (s *IssuesService) ListLabelsByIssue(owner string, repo string, number int, opt *ListOptions) ([]Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/labels", owner, repo, number)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	labels := new([]Label)
+	resp, err := s.client.Do(req, labels)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *labels, resp, err
+}
+
+// AddLabelsToIssue adds labels to an issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#list-all-labels-for-this-repository
+func (s *IssuesService) AddLabelsToIssue(owner string, repo string, number int, labels []string) ([]Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/labels", owner, repo, number)
+	req, err := s.client.NewRequest("POST", u, labels)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	l := new([]Label)
+	resp, err := s.client.Do(req, l)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *l, resp, err
+}
+
+// RemoveLabelForIssue removes a label for an issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#remove-a-label-from-an-issue
+func (s *IssuesService) RemoveLabelForIssue(owner string, repo string, number int, label string) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/labels/%v", owner, repo, number, label)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// ReplaceLabelsForIssue replaces all labels for an issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#replace-all-labels-for-an-issue
+func (s *IssuesService) ReplaceLabelsForIssue(owner string, repo string, number int, labels []string) ([]Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/labels", owner, repo, number)
+	req, err := s.client.NewRequest("PUT", u, labels)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	l := new([]Label)
+	resp, err := s.client.Do(req, l)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *l, resp, err
+}
+
+// RemoveLabelsForIssue removes all labels for an issue.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#remove-all-labels-from-an-issue
+func (s *IssuesService) RemoveLabelsForIssue(owner string, repo string, number int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%d/labels", owner, repo, number)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// ListLabelsForMilestone lists labels for every issue in a milestone.
+//
+// GitHub API docs: http://developer.github.com/v3/issues/labels/#get-labels-for-every-issue-in-a-milestone
+func (s *IssuesService) ListLabelsForMilestone(owner string, repo string, number int, opt *ListOptions) ([]Label, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/milestones/%d/labels", owner, repo, number)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	labels := new([]Label)
+	resp, err := s.client.Do(req, labels)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *labels, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/issues_milestones.go b/vendor/github.com/google/go-github/github/issues_milestones.go
new file mode 100644
index 0000000..cc07cd7
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/issues_milestones.go
@@ -0,0 +1,144 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// Milestone represents a Github repository milestone.
+type Milestone struct {
+	URL          *string    `json:"url,omitempty"`
+	HTMLURL      *string    `json:"html_url,omitempty"`
+	LabelsURL    *string    `json:"labels_url,omitempty"`
+	ID           *int       `json:"id,omitempty"`
+	Number       *int       `json:"number,omitempty"`
+	State        *string    `json:"state,omitempty"`
+	Title        *string    `json:"title,omitempty"`
+	Description  *string    `json:"description,omitempty"`
+	Creator      *User      `json:"creator,omitempty"`
+	OpenIssues   *int       `json:"open_issues,omitempty"`
+	ClosedIssues *int       `json:"closed_issues,omitempty"`
+	CreatedAt    *time.Time `json:"created_at,omitempty"`
+	UpdatedAt    *time.Time `json:"updated_at,omitempty"`
+	ClosedAt     *time.Time `json:"closed_at,omitempty"`
+	DueOn        *time.Time `json:"due_on,omitempty"`
+}
+
+func (m Milestone) String() string {
+	return Stringify(m)
+}
+
+// MilestoneListOptions specifies the optional parameters to the
+// IssuesService.ListMilestones method.
+type MilestoneListOptions struct {
+	// State filters milestones based on their state. Possible values are:
+	// open, closed. Default is "open".
+	State string `url:"state,omitempty"`
+
+	// Sort specifies how to sort milestones. Possible values are: due_date, completeness.
+	// Default value is "due_date".
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort milestones. Possible values are: asc, desc.
+	// Default is "asc".
+	Direction string `url:"direction,omitempty"`
+}
+
+// ListMilestones lists all milestones for a repository.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/milestones/#list-milestones-for-a-repository
+func (s *IssuesService) ListMilestones(owner string, repo string, opt *MilestoneListOptions) ([]Milestone, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/milestones", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	milestones := new([]Milestone)
+	resp, err := s.client.Do(req, milestones)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *milestones, resp, err
+}
+
+// GetMilestone gets a single milestone.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/milestones/#get-a-single-milestone
+func (s *IssuesService) GetMilestone(owner string, repo string, number int) (*Milestone, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/milestones/%d", owner, repo, number)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	milestone := new(Milestone)
+	resp, err := s.client.Do(req, milestone)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return milestone, resp, err
+}
+
+// CreateMilestone creates a new milestone on the specified repository.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/milestones/#create-a-milestone
+func (s *IssuesService) CreateMilestone(owner string, repo string, milestone *Milestone) (*Milestone, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/milestones", owner, repo)
+	req, err := s.client.NewRequest("POST", u, milestone)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	m := new(Milestone)
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, err
+}
+
+// EditMilestone edits a milestone.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/milestones/#update-a-milestone
+func (s *IssuesService) EditMilestone(owner string, repo string, number int, milestone *Milestone) (*Milestone, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/milestones/%d", owner, repo, number)
+	req, err := s.client.NewRequest("PATCH", u, milestone)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	m := new(Milestone)
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, err
+}
+
+// DeleteMilestone deletes a milestone.
+//
+// GitHub API docs: https://developer.github.com/v3/issues/milestones/#delete-a-milestone
+func (s *IssuesService) DeleteMilestone(owner string, repo string, number int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/milestones/%d", owner, repo, number)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/licenses.go b/vendor/github.com/google/go-github/github/licenses.go
new file mode 100644
index 0000000..fb2fb5a
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/licenses.go
@@ -0,0 +1,81 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// LicensesService handles communication with the license related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/pulls/
+type LicensesService struct {
+	client *Client
+}
+
+// License represents an open source license.
+type License struct {
+	Key  *string `json:"key,omitempty"`
+	Name *string `json:"name,omitempty"`
+	URL  *string `json:"url,omitempty"`
+
+	HTMLURL        *string   `json:"html_url,omitempty"`
+	Featured       *bool     `json:"featured,omitempty"`
+	Description    *string   `json:"description,omitempty"`
+	Category       *string   `json:"category,omitempty"`
+	Implementation *string   `json:"implementation,omitempty"`
+	Required       *[]string `json:"required,omitempty"`
+	Permitted      *[]string `json:"permitted,omitempty"`
+	Forbidden      *[]string `json:"forbidden,omitempty"`
+	Body           *string   `json:"body,omitempty"`
+}
+
+func (l License) String() string {
+	return Stringify(l)
+}
+
+// List popular open source licenses.
+//
+// GitHub API docs: https://developer.github.com/v3/licenses/#list-all-licenses
+func (s *LicensesService) List() ([]License, *Response, error) {
+	req, err := s.client.NewRequest("GET", "licenses", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
+	licenses := new([]License)
+	resp, err := s.client.Do(req, licenses)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *licenses, resp, err
+}
+
+// Get extended metadata for one license.
+//
+// GitHub API docs: https://developer.github.com/v3/licenses/#get-an-individual-license
+func (s *LicensesService) Get(licenseName string) (*License, *Response, error) {
+	u := fmt.Sprintf("licenses/%s", licenseName)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
+	license := new(License)
+	resp, err := s.client.Do(req, license)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return license, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/migrations.go b/vendor/github.com/google/go-github/github/migrations.go
new file mode 100644
index 0000000..8a7bc5f
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/migrations.go
@@ -0,0 +1,225 @@
+// Copyright 2016 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// MigrationService provides access to the migration related functions
+// in the GitHub API.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/
+type MigrationService struct {
+	client *Client
+}
+
+// Migration represents a GitHub migration (archival).
+type Migration struct {
+	ID   *int    `json:"id,omitempty"`
+	GUID *string `json:"guid,omitempty"`
+	// State is the current state of a migration.
+	// Possible values are:
+	//     "pending" which means the migration hasn't started yet,
+	//     "exporting" which means the migration is in progress,
+	//     "exported" which means the migration finished successfully, or
+	//     "failed" which means the migration failed.
+	State *string `json:"state,omitempty"`
+	// LockRepositories indicates whether repositories are locked (to prevent
+	// manipulation) while migrating data.
+	LockRepositories *bool `json:"lock_repositories,omitempty"`
+	// ExcludeAttachments indicates whether attachments should be excluded from
+	// the migration (to reduce migration archive file size).
+	ExcludeAttachments *bool         `json:"exclude_attachments,omitempty"`
+	URL                *string       `json:"url,omitempty"`
+	CreatedAt          *string       `json:"created_at,omitempty"`
+	UpdatedAt          *string       `json:"updated_at,omitempty"`
+	Repositories       []*Repository `json:"repositories,omitempty"`
+}
+
+func (m Migration) String() string {
+	return Stringify(m)
+}
+
+// MigrationOptions specifies the optional parameters to Migration methods.
+type MigrationOptions struct {
+	// LockRepositories indicates whether repositories should be locked (to prevent
+	// manipulation) while migrating data.
+	LockRepositories bool
+
+	// ExcludeAttachments indicates whether attachments should be excluded from
+	// the migration (to reduce migration archive file size).
+	ExcludeAttachments bool
+}
+
+// startMigration represents the body of a StartMigration request.
+type startMigration struct {
+	// Repositories is a slice of repository names to migrate.
+	Repositories []string `json:"repositories,omitempty"`
+
+	// LockRepositories indicates whether repositories should be locked (to prevent
+	// manipulation) while migrating data.
+	LockRepositories *bool `json:"lock_repositories,omitempty"`
+
+	// ExcludeAttachments indicates whether attachments should be excluded from
+	// the migration (to reduce migration archive file size).
+	ExcludeAttachments *bool `json:"exclude_attachments,omitempty"`
+}
+
+// StartMigration starts the generation of a migration archive.
+// repos is a slice of repository names to migrate.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/migrations/#start-a-migration
+func (s *MigrationService) StartMigration(org string, repos []string, opt *MigrationOptions) (*Migration, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/migrations", org)
+
+	body := &startMigration{Repositories: repos}
+	if opt != nil {
+		body.LockRepositories = Bool(opt.LockRepositories)
+		body.ExcludeAttachments = Bool(opt.ExcludeAttachments)
+	}
+
+	req, err := s.client.NewRequest("POST", u, body)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeMigrationsPreview)
+
+	m := &Migration{}
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// ListMigrations lists the most recent migrations.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/migrations/#get-a-list-of-migrations
+func (s *MigrationService) ListMigrations(org string) ([]*Migration, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/migrations", org)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeMigrationsPreview)
+
+	var m []*Migration
+	resp, err := s.client.Do(req, &m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// MigrationStatus gets the status of a specific migration archive.
+// id is the migration ID.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/migrations/#get-the-status-of-a-migration
+func (s *MigrationService) MigrationStatus(org string, id int) (*Migration, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/migrations/%v", org, id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeMigrationsPreview)
+
+	m := &Migration{}
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// MigrationArchiveURL fetches a migration archive URL.
+// id is the migration ID.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/migrations/#download-a-migration-archive
+func (s *MigrationService) MigrationArchiveURL(org string, id int) (url string, err error) {
+	u := fmt.Sprintf("orgs/%v/migrations/%v/archive", org, id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return "", err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeMigrationsPreview)
+
+	s.client.clientMu.Lock()
+	defer s.client.clientMu.Unlock()
+
+	// Disable the redirect mechanism because AWS fails if the GitHub auth token is provided.
+	var loc string
+	saveRedirect := s.client.client.CheckRedirect
+	s.client.client.CheckRedirect = func(req *http.Request, via []*http.Request) error {
+		loc = req.URL.String()
+		return errors.New("disable redirect")
+	}
+	defer func() { s.client.client.CheckRedirect = saveRedirect }()
+
+	_, err = s.client.Do(req, nil) // expect error from disable redirect
+	if err == nil {
+		return "", errors.New("expected redirect, none provided")
+	}
+	if !strings.Contains(err.Error(), "disable redirect") {
+		return "", err
+	}
+	return loc, nil
+}
+
+// DeleteMigration deletes a previous migration archive.
+// id is the migration ID.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/migrations/#delete-a-migration-archive
+func (s *MigrationService) DeleteMigration(org string, id int) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/migrations/%v/archive", org, id)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeMigrationsPreview)
+
+	return s.client.Do(req, nil)
+}
+
+// UnlockRepo unlocks a repository that was locked for migration.
+// id is the migration ID.
+// You should unlock each migrated repository and delete them when the migration
+// is complete and you no longer need the source data.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/migrations/#unlock-a-repository
+func (s *MigrationService) UnlockRepo(org string, id int, repo string) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/migrations/%v/repos/%v/lock", org, id, repo)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeMigrationsPreview)
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/migrations_source_import.go b/vendor/github.com/google/go-github/github/migrations_source_import.go
new file mode 100644
index 0000000..4861698
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/migrations_source_import.go
@@ -0,0 +1,326 @@
+// Copyright 2016 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Import represents a repository import request.
+type Import struct {
+	// The URL of the originating repository.
+	VCSURL *string `json:"vcs_url,omitempty"`
+	// The originating VCS type. Can be one of 'subversion', 'git',
+	// 'mercurial', or 'tfvc'. Without this parameter, the import job will
+	// take additional time to detect the VCS type before beginning the
+	// import. This detection step will be reflected in the response.
+	VCS *string `json:"vcs,omitempty"`
+	// VCSUsername and VCSPassword are only used for StartImport calls that
+	// are importing a password-protected repository.
+	VCSUsername *string `json:"vcs_username,omitempty"`
+	VCSPassword *string `json:"vcs_password,omitempty"`
+	// For a tfvc import, the name of the project that is being imported.
+	TFVCProject *string `json:"tfvc_project,omitempty"`
+
+	// LFS related fields that may be preset in the Import Progress response
+
+	// Describes whether the import has been opted in or out of using Git
+	// LFS. The value can be 'opt_in', 'opt_out', or 'undecided' if no
+	// action has been taken.
+	UseLFS *string `json:"use_lfs,omitempty"`
+	// Describes whether files larger than 100MB were found during the
+	// importing step.
+	HasLargeFiles *bool `json:"has_large_files,omitempty"`
+	// The total size in gigabytes of files larger than 100MB found in the
+	// originating repository.
+	LargeFilesSize *int `json:"large_files_size,omitempty"`
+	// The total number of files larger than 100MB found in the originating
+	// repository. To see a list of these files, call LargeFiles.
+	LargeFilesCount *int `json:"large_files_count,omitempty"`
+
+	// Identifies the current status of an import.  An import that does not
+	// have errors will progress through these steps:
+	//
+	//     detecting - the "detection" step of the import is in progress
+	//         because the request did not include a VCS parameter. The
+	//         import is identifying the type of source control present at
+	//         the URL.
+	//     importing - the "raw" step of the import is in progress. This is
+	//         where commit data is fetched from the original repository.
+	//         The import progress response will include CommitCount (the
+	//         total number of raw commits that will be imported) and
+	//         Percent (0 - 100, the current progress through the import).
+	//     mapping - the "rewrite" step of the import is in progress. This
+	//         is where SVN branches are converted to Git branches, and
+	//         where author updates are applied. The import progress
+	//         response does not include progress information.
+	//     pushing - the "push" step of the import is in progress. This is
+	//         where the importer updates the repository on GitHub. The
+	//         import progress response will include PushPercent, which is
+	//         the percent value reported by git push when it is "Writing
+	//         objects".
+	//     complete - the import is complete, and the repository is ready
+	//         on GitHub.
+	//
+	// If there are problems, you will see one of these in the status field:
+	//
+	//     auth_failed - the import requires authentication in order to
+	//         connect to the original repository. Make an UpdateImport
+	//         request, and include VCSUsername and VCSPassword.
+	//     error - the import encountered an error. The import progress
+	//         response will include the FailedStep and an error message.
+	//         Contact GitHub support for more information.
+	//     detection_needs_auth - the importer requires authentication for
+	//         the originating repository to continue detection. Make an
+	//         UpdatImport request, and include VCSUsername and
+	//         VCSPassword.
+	//     detection_found_nothing - the importer didn't recognize any
+	//         source control at the URL.
+	//     detection_found_multiple - the importer found several projects
+	//         or repositories at the provided URL. When this is the case,
+	//         the Import Progress response will also include a
+	//         ProjectChoices field with the possible project choices as
+	//         values. Make an UpdateImport request, and include VCS and
+	//         (if applicable) TFVCProject.
+	Status        *string `json:"status,omitempty"`
+	CommitCount   *int    `json:"commit_count,omitempty"`
+	StatusText    *string `json:"status_text,omitempty"`
+	AuthorsCount  *int    `json:"authors_count,omitempty"`
+	Percent       *int    `json:"percent,omitempty"`
+	PushPercent   *int    `json:"push_percent,omitempty"`
+	URL           *string `json:"url,omitempty"`
+	HTMLURL       *string `json:"html_url,omitempty"`
+	AuthorsURL    *string `json:"authors_url,omitempty"`
+	RepositoryURL *string `json:"repository_url,omitempty"`
+	Message       *string `json:"message,omitempty"`
+	FailedStep    *string `json:"failed_step,omitempty"`
+
+	// Human readable display name, provided when the Import appears as
+	// part of ProjectChoices.
+	HumanName *string `json:"human_name,omitempty"`
+
+	// When the importer finds several projects or repositories at the
+	// provided URLs, this will identify the available choices.  Call
+	// UpdateImport with the selected Import value.
+	ProjectChoices []Import `json:"project_choices,omitempty"`
+}
+
+func (i Import) String() string {
+	return Stringify(i)
+}
+
+// SourceImportAuthor identifies an author imported from a source repository.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#get-commit-authors
+type SourceImportAuthor struct {
+	ID         *int    `json:"id,omitempty"`
+	RemoteID   *string `json:"remote_id,omitempty"`
+	RemoteName *string `json:"remote_name,omitempty"`
+	Email      *string `json:"email,omitempty"`
+	Name       *string `json:"name,omitempty"`
+	URL        *string `json:"url,omitempty"`
+	ImportURL  *string `json:"import_url,omitempty"`
+}
+
+func (a SourceImportAuthor) String() string {
+	return Stringify(a)
+}
+
+// LargeFile identifies a file larger than 100MB found during a repository import.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#get-large-files
+type LargeFile struct {
+	RefName *string `json:"ref_name,omitempty"`
+	Path    *string `json:"path,omitempty"`
+	OID     *string `json:"oid,omitempty"`
+	Size    *int    `json:"size,omitempty"`
+}
+
+func (f LargeFile) String() string {
+	return Stringify(f)
+}
+
+// StartImport initiates a repository import.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#start-an-import
+func (s *MigrationService) StartImport(owner, repo string, in *Import) (*Import, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import", owner, repo)
+	req, err := s.client.NewRequest("PUT", u, in)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	out := new(Import)
+	resp, err := s.client.Do(req, out)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return out, resp, err
+}
+
+// QueryImport queries for the status and progress of an ongoing repository import.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#get-import-progress
+func (s *MigrationService) ImportProgress(owner, repo string) (*Import, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	out := new(Import)
+	resp, err := s.client.Do(req, out)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return out, resp, err
+}
+
+// UpdateImport initiates a repository import.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#update-existing-import
+func (s *MigrationService) UpdateImport(owner, repo string, in *Import) (*Import, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import", owner, repo)
+	req, err := s.client.NewRequest("PATCH", u, in)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	out := new(Import)
+	resp, err := s.client.Do(req, out)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return out, resp, err
+}
+
+// CommitAuthors gets the authors mapped from the original repository.
+//
+// Each type of source control system represents authors in a different way.
+// For example, a Git commit author has a display name and an email address,
+// but a Subversion commit author just has a username. The GitHub Importer will
+// make the author information valid, but the author might not be correct. For
+// example, it will change the bare Subversion username "hubot" into something
+// like "hubot <hubot@12341234-abab-fefe-8787-fedcba987654>".
+//
+// This method and MapCommitAuthor allow you to provide correct Git author
+// information.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#get-commit-authors
+func (s *MigrationService) CommitAuthors(owner, repo string) ([]SourceImportAuthor, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import/authors", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	authors := new([]SourceImportAuthor)
+	resp, err := s.client.Do(req, authors)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *authors, resp, err
+}
+
+// MapCommitAuthor updates an author's identity for the import. Your
+// application can continue updating authors any time before you push new
+// commits to the repository.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#map-a-commit-author
+func (s *MigrationService) MapCommitAuthor(owner, repo string, id int, author *SourceImportAuthor) (*SourceImportAuthor, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import/authors/%v", owner, repo, id)
+	req, err := s.client.NewRequest("PATCH", u, author)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	out := new(SourceImportAuthor)
+	resp, err := s.client.Do(req, out)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return out, resp, err
+}
+
+// SetLFSPreference sets whether imported repositories should use Git LFS for
+// files larger than 100MB.  Only the UseLFS field on the provided Import is
+// used.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#set-git-lfs-preference
+func (s *MigrationService) SetLFSPreference(owner, repo string, in *Import) (*Import, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import/lfs", owner, repo)
+	req, err := s.client.NewRequest("PATCH", u, in)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	out := new(Import)
+	resp, err := s.client.Do(req, out)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return out, resp, err
+}
+
+// LargeFiles lists files larger than 100MB found during the import.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#get-large-files
+func (s *MigrationService) LargeFiles(owner, repo string) ([]LargeFile, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import/large_files", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	files := new([]LargeFile)
+	resp, err := s.client.Do(req, files)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *files, resp, err
+}
+
+// CancelImport stops an import for a repository.
+//
+// GitHub API docs: https://developer.github.com/v3/migration/source_imports/#cancel-an-import
+func (s *MigrationService) CancelImport(owner, repo string) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/import", owner, repo)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches
+	req.Header.Set("Accept", mediaTypeImportPreview)
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/misc.go b/vendor/github.com/google/go-github/github/misc.go
new file mode 100644
index 0000000..66e7f52
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/misc.go
@@ -0,0 +1,197 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"bytes"
+	"fmt"
+	"net/url"
+)
+
+// MarkdownOptions specifies optional parameters to the Markdown method.
+type MarkdownOptions struct {
+	// Mode identifies the rendering mode.  Possible values are:
+	//   markdown - render a document as plain Markdown, just like
+	//   README files are rendered.
+	//
+	//   gfm - to render a document as user-content, e.g. like user
+	//   comments or issues are rendered. In GFM mode, hard line breaks are
+	//   always taken into account, and issue and user mentions are linked
+	//   accordingly.
+	//
+	// Default is "markdown".
+	Mode string
+
+	// Context identifies the repository context.  Only taken into account
+	// when rendering as "gfm".
+	Context string
+}
+
+type markdownRequest struct {
+	Text    *string `json:"text,omitempty"`
+	Mode    *string `json:"mode,omitempty"`
+	Context *string `json:"context,omitempty"`
+}
+
+// Markdown renders an arbitrary Markdown document.
+//
+// GitHub API docs: https://developer.github.com/v3/markdown/
+func (c *Client) Markdown(text string, opt *MarkdownOptions) (string, *Response, error) {
+	request := &markdownRequest{Text: String(text)}
+	if opt != nil {
+		if opt.Mode != "" {
+			request.Mode = String(opt.Mode)
+		}
+		if opt.Context != "" {
+			request.Context = String(opt.Context)
+		}
+	}
+
+	req, err := c.NewRequest("POST", "markdown", request)
+	if err != nil {
+		return "", nil, err
+	}
+
+	buf := new(bytes.Buffer)
+	resp, err := c.Do(req, buf)
+	if err != nil {
+		return "", resp, err
+	}
+
+	return buf.String(), resp, nil
+}
+
+// ListEmojis returns the emojis available to use on GitHub.
+//
+// GitHub API docs: https://developer.github.com/v3/emojis/
+func (c *Client) ListEmojis() (map[string]string, *Response, error) {
+	req, err := c.NewRequest("GET", "emojis", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var emoji map[string]string
+	resp, err := c.Do(req, &emoji)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return emoji, resp, nil
+}
+
+// APIMeta represents metadata about the GitHub API.
+type APIMeta struct {
+	// An Array of IP addresses in CIDR format specifying the addresses
+	// that incoming service hooks will originate from on GitHub.com.
+	Hooks []string `json:"hooks,omitempty"`
+
+	// An Array of IP addresses in CIDR format specifying the Git servers
+	// for GitHub.com.
+	Git []string `json:"git,omitempty"`
+
+	// Whether authentication with username and password is supported.
+	// (GitHub Enterprise instances using CAS or OAuth for authentication
+	// will return false. Features like Basic Authentication with a
+	// username and password, sudo mode, and two-factor authentication are
+	// not supported on these servers.)
+	VerifiablePasswordAuthentication *bool `json:"verifiable_password_authentication,omitempty"`
+
+	// An array of IP addresses in CIDR format specifying the addresses
+	// which serve GitHub Pages websites.
+	Pages []string `json:"pages,omitempty"`
+}
+
+// APIMeta returns information about GitHub.com, the service. Or, if you access
+// this endpoint on your organization’s GitHub Enterprise installation, this
+// endpoint provides information about that installation.
+//
+// GitHub API docs: https://developer.github.com/v3/meta/
+func (c *Client) APIMeta() (*APIMeta, *Response, error) {
+	req, err := c.NewRequest("GET", "meta", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	meta := new(APIMeta)
+	resp, err := c.Do(req, meta)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return meta, resp, nil
+}
+
+// Octocat returns an ASCII art octocat with the specified message in a speech
+// bubble.  If message is empty, a random zen phrase is used.
+func (c *Client) Octocat(message string) (string, *Response, error) {
+	u := "octocat"
+	if message != "" {
+		u = fmt.Sprintf("%s?s=%s", u, url.QueryEscape(message))
+	}
+
+	req, err := c.NewRequest("GET", u, nil)
+	if err != nil {
+		return "", nil, err
+	}
+
+	buf := new(bytes.Buffer)
+	resp, err := c.Do(req, buf)
+	if err != nil {
+		return "", resp, err
+	}
+
+	return buf.String(), resp, nil
+}
+
+// Zen returns a random line from The Zen of GitHub.
+//
+// see also: http://warpspire.com/posts/taste/
+func (c *Client) Zen() (string, *Response, error) {
+	req, err := c.NewRequest("GET", "zen", nil)
+	if err != nil {
+		return "", nil, err
+	}
+
+	buf := new(bytes.Buffer)
+	resp, err := c.Do(req, buf)
+	if err != nil {
+		return "", resp, err
+	}
+
+	return buf.String(), resp, nil
+}
+
+// ServiceHook represents a hook that has configuration settings, a list of
+// available events, and default events.
+type ServiceHook struct {
+	Name            *string    `json:"name,omitempty"`
+	Events          []string   `json:"events,omitempty"`
+	SupportedEvents []string   `json:"supported_events,omitempty"`
+	Schema          [][]string `json:"schema,omitempty"`
+}
+
+func (s *ServiceHook) String() string {
+	return Stringify(s)
+}
+
+// ListServiceHooks lists all of the available service hooks.
+//
+// GitHub API docs: https://developer.github.com/webhooks/#services
+func (c *Client) ListServiceHooks() ([]ServiceHook, *Response, error) {
+	u := "hooks"
+	req, err := c.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	hooks := new([]ServiceHook)
+	resp, err := c.Do(req, hooks)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *hooks, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/orgs.go b/vendor/github.com/google/go-github/github/orgs.go
new file mode 100644
index 0000000..6018a3a
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/orgs.go
@@ -0,0 +1,170 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// OrganizationsService provides access to the organization related functions
+// in the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/
+type OrganizationsService struct {
+	client *Client
+}
+
+// Organization represents a GitHub organization account.
+type Organization struct {
+	Login             *string    `json:"login,omitempty"`
+	ID                *int       `json:"id,omitempty"`
+	AvatarURL         *string    `json:"avatar_url,omitempty"`
+	HTMLURL           *string    `json:"html_url,omitempty"`
+	Name              *string    `json:"name,omitempty"`
+	Company           *string    `json:"company,omitempty"`
+	Blog              *string    `json:"blog,omitempty"`
+	Location          *string    `json:"location,omitempty"`
+	Email             *string    `json:"email,omitempty"`
+	PublicRepos       *int       `json:"public_repos,omitempty"`
+	PublicGists       *int       `json:"public_gists,omitempty"`
+	Followers         *int       `json:"followers,omitempty"`
+	Following         *int       `json:"following,omitempty"`
+	CreatedAt         *time.Time `json:"created_at,omitempty"`
+	UpdatedAt         *time.Time `json:"updated_at,omitempty"`
+	TotalPrivateRepos *int       `json:"total_private_repos,omitempty"`
+	OwnedPrivateRepos *int       `json:"owned_private_repos,omitempty"`
+	PrivateGists      *int       `json:"private_gists,omitempty"`
+	DiskUsage         *int       `json:"disk_usage,omitempty"`
+	Collaborators     *int       `json:"collaborators,omitempty"`
+	BillingEmail      *string    `json:"billing_email,omitempty"`
+	Type              *string    `json:"type,omitempty"`
+	Plan              *Plan      `json:"plan,omitempty"`
+
+	// API URLs
+	URL              *string `json:"url,omitempty"`
+	EventsURL        *string `json:"events_url,omitempty"`
+	MembersURL       *string `json:"members_url,omitempty"`
+	PublicMembersURL *string `json:"public_members_url,omitempty"`
+	ReposURL         *string `json:"repos_url,omitempty"`
+}
+
+func (o Organization) String() string {
+	return Stringify(o)
+}
+
+// Plan represents the payment plan for an account.  See plans at https://github.com/plans.
+type Plan struct {
+	Name          *string `json:"name,omitempty"`
+	Space         *int    `json:"space,omitempty"`
+	Collaborators *int    `json:"collaborators,omitempty"`
+	PrivateRepos  *int    `json:"private_repos,omitempty"`
+}
+
+func (p Plan) String() string {
+	return Stringify(p)
+}
+
+// OrganizationsListOptions specifies the optional parameters to the
+// OrganizationsService.ListAll method.
+type OrganizationsListOptions struct {
+	// Since filters Organizations by ID.
+	Since int `url:"since,omitempty"`
+}
+
+// ListAll lists all organizations, in the order that they were created on GitHub.
+//
+// Note: Pagination is powered exclusively by the since parameter. To continue
+// listing the next set of organizations, use the ID of the last-returned organization
+// as the opts.Since parameter for the next call.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/#list-all-organizations
+func (s *OrganizationsService) ListAll(opt *OrganizationsListOptions) ([]Organization, *Response, error) {
+	u, err := addOptions("organizations", opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	orgs := []Organization{}
+	resp, err := s.client.Do(req, &orgs)
+	if err != nil {
+		return nil, resp, err
+	}
+	return orgs, resp, err
+}
+
+// List the organizations for a user.  Passing the empty string will list
+// organizations for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/#list-user-organizations
+func (s *OrganizationsService) List(user string, opt *ListOptions) ([]Organization, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/orgs", user)
+	} else {
+		u = "user/orgs"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	orgs := new([]Organization)
+	resp, err := s.client.Do(req, orgs)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *orgs, resp, err
+}
+
+// Get fetches an organization by name.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/#get-an-organization
+func (s *OrganizationsService) Get(org string) (*Organization, *Response, error) {
+	u := fmt.Sprintf("orgs/%v", org)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	organization := new(Organization)
+	resp, err := s.client.Do(req, organization)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return organization, resp, err
+}
+
+// Edit an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/#edit-an-organization
+func (s *OrganizationsService) Edit(name string, org *Organization) (*Organization, *Response, error) {
+	u := fmt.Sprintf("orgs/%v", name)
+	req, err := s.client.NewRequest("PATCH", u, org)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	o := new(Organization)
+	resp, err := s.client.Do(req, o)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return o, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/orgs_hooks.go b/vendor/github.com/google/go-github/github/orgs_hooks.go
new file mode 100644
index 0000000..3e7ad40
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/orgs_hooks.go
@@ -0,0 +1,104 @@
+// Copyright 2015 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// ListHooks lists all Hooks for the specified organization.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/hooks/#list-hooks
+func (s *OrganizationsService) ListHooks(org string, opt *ListOptions) ([]Hook, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/hooks", org)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	hooks := new([]Hook)
+	resp, err := s.client.Do(req, hooks)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *hooks, resp, err
+}
+
+// GetHook returns a single specified Hook.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/hooks/#get-single-hook
+func (s *OrganizationsService) GetHook(org string, id int) (*Hook, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/hooks/%d", org, id)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	hook := new(Hook)
+	resp, err := s.client.Do(req, hook)
+	return hook, resp, err
+}
+
+// CreateHook creates a Hook for the specified org.
+// Name and Config are required fields.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/hooks/#create-a-hook
+func (s *OrganizationsService) CreateHook(org string, hook *Hook) (*Hook, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/hooks", org)
+	req, err := s.client.NewRequest("POST", u, hook)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	h := new(Hook)
+	resp, err := s.client.Do(req, h)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return h, resp, err
+}
+
+// EditHook updates a specified Hook.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/hooks/#edit-a-hook
+func (s *OrganizationsService) EditHook(org string, id int, hook *Hook) (*Hook, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/hooks/%d", org, id)
+	req, err := s.client.NewRequest("PATCH", u, hook)
+	if err != nil {
+		return nil, nil, err
+	}
+	h := new(Hook)
+	resp, err := s.client.Do(req, h)
+	return h, resp, err
+}
+
+// PingHook triggers a 'ping' event to be sent to the Hook.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/hooks/#ping-a-hook
+func (s *OrganizationsService) PingHook(org string, id int) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/hooks/%d/pings", org, id)
+	req, err := s.client.NewRequest("POST", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// DeleteHook deletes a specified Hook.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/hooks/#delete-a-hook
+func (s *OrganizationsService) DeleteHook(org string, id int) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/hooks/%d", org, id)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/orgs_members.go b/vendor/github.com/google/go-github/github/orgs_members.go
new file mode 100644
index 0000000..01a9ba9
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/orgs_members.go
@@ -0,0 +1,276 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Membership represents the status of a user's membership in an organization or team.
+type Membership struct {
+	URL *string `json:"url,omitempty"`
+
+	// State is the user's status within the organization or team.
+	// Possible values are: "active", "pending"
+	State *string `json:"state,omitempty"`
+
+	// Role identifies the user's role within the organization or team.
+	// Possible values for organization membership:
+	//     member - non-owner organization member
+	//     admin - organization owner
+	//
+	// Possible values for team membership are:
+	//     member - a normal member of the team
+	//     maintainer - a team maintainer. Able to add/remove other team
+	//                  members, promote other team members to team
+	//                  maintainer, and edit the team’s name and description
+	Role *string `json:"role,omitempty"`
+
+	// For organization membership, the API URL of the organization.
+	OrganizationURL *string `json:"organization_url,omitempty"`
+
+	// For organization membership, the organization the membership is for.
+	Organization *Organization `json:"organization,omitempty"`
+
+	// For organization membership, the user the membership is for.
+	User *User `json:"user,omitempty"`
+}
+
+func (m Membership) String() string {
+	return Stringify(m)
+}
+
+// ListMembersOptions specifies optional parameters to the
+// OrganizationsService.ListMembers method.
+type ListMembersOptions struct {
+	// If true (or if the authenticated user is not an owner of the
+	// organization), list only publicly visible members.
+	PublicOnly bool `url:"-"`
+
+	// Filter members returned in the list.  Possible values are:
+	// 2fa_disabled, all.  Default is "all".
+	Filter string `url:"filter,omitempty"`
+
+	// Role filters members returned by their role in the organization.
+	// Possible values are:
+	//     all - all members of the organization, regardless of role
+	//     admin - organization owners
+	//     member - non-organization members
+	//
+	// Default is "all".
+	Role string `url:"role,omitempty"`
+
+	ListOptions
+}
+
+// ListMembers lists the members for an organization.  If the authenticated
+// user is an owner of the organization, this will return both concealed and
+// public members, otherwise it will only return public members.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/members/#members-list
+func (s *OrganizationsService) ListMembers(org string, opt *ListMembersOptions) ([]User, *Response, error) {
+	var u string
+	if opt != nil && opt.PublicOnly {
+		u = fmt.Sprintf("orgs/%v/public_members", org)
+	} else {
+		u = fmt.Sprintf("orgs/%v/members", org)
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if opt != nil && opt.Role != "" {
+		req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+	}
+
+	members := new([]User)
+	resp, err := s.client.Do(req, members)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *members, resp, err
+}
+
+// IsMember checks if a user is a member of an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/members/#check-membership
+func (s *OrganizationsService) IsMember(org, user string) (bool, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/members/%v", org, user)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+
+	resp, err := s.client.Do(req, nil)
+	member, err := parseBoolResponse(err)
+	return member, resp, err
+}
+
+// IsPublicMember checks if a user is a public member of an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/members/#check-public-membership
+func (s *OrganizationsService) IsPublicMember(org, user string) (bool, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/public_members/%v", org, user)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+
+	resp, err := s.client.Do(req, nil)
+	member, err := parseBoolResponse(err)
+	return member, resp, err
+}
+
+// RemoveMember removes a user from all teams of an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/members/#remove-a-member
+func (s *OrganizationsService) RemoveMember(org, user string) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/members/%v", org, user)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// PublicizeMembership publicizes a user's membership in an organization. (A
+// user cannot publicize the membership for another user.)
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/members/#publicize-a-users-membership
+func (s *OrganizationsService) PublicizeMembership(org, user string) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/public_members/%v", org, user)
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// ConcealMembership conceals a user's membership in an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/members/#conceal-a-users-membership
+func (s *OrganizationsService) ConcealMembership(org, user string) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/public_members/%v", org, user)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// ListOrgMembershipsOptions specifies optional parameters to the
+// OrganizationsService.ListOrgMemberships method.
+type ListOrgMembershipsOptions struct {
+	// Filter memberships to include only those with the specified state.
+	// Possible values are: "active", "pending".
+	State string `url:"state,omitempty"`
+
+	ListOptions
+}
+
+// ListOrgMemberships lists the organization memberships for the authenticated user.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/members/#list-your-organization-memberships
+func (s *OrganizationsService) ListOrgMemberships(opt *ListOrgMembershipsOptions) ([]Membership, *Response, error) {
+	u := "user/memberships/orgs"
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var memberships []Membership
+	resp, err := s.client.Do(req, &memberships)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return memberships, resp, err
+}
+
+// GetOrgMembership gets the membership for a user in a specified organization.
+// Passing an empty string for user will get the membership for the
+// authenticated user.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/members/#get-organization-membership
+// GitHub API docs: https://developer.github.com/v3/orgs/members/#get-your-organization-membership
+func (s *OrganizationsService) GetOrgMembership(user, org string) (*Membership, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("orgs/%v/memberships/%v", org, user)
+	} else {
+		u = fmt.Sprintf("user/memberships/orgs/%v", org)
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	membership := new(Membership)
+	resp, err := s.client.Do(req, membership)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return membership, resp, err
+}
+
+// EditOrgMembership edits the membership for user in specified organization.
+// Passing an empty string for user will edit the membership for the
+// authenticated user.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/members/#add-or-update-organization-membership
+// GitHub API docs: https://developer.github.com/v3/orgs/members/#edit-your-organization-membership
+func (s *OrganizationsService) EditOrgMembership(user, org string, membership *Membership) (*Membership, *Response, error) {
+	var u, method string
+	if user != "" {
+		u = fmt.Sprintf("orgs/%v/memberships/%v", org, user)
+		method = "PUT"
+	} else {
+		u = fmt.Sprintf("user/memberships/orgs/%v", org)
+		method = "PATCH"
+	}
+
+	req, err := s.client.NewRequest(method, u, membership)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	m := new(Membership)
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, err
+}
+
+// RemoveOrgMembership removes user from the specified organization.  If the
+// user has been invited to the organization, this will cancel their invitation.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/members/#remove-organization-membership
+func (s *OrganizationsService) RemoveOrgMembership(user, org string) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v/memberships/%v", org, user)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/orgs_teams.go b/vendor/github.com/google/go-github/github/orgs_teams.go
new file mode 100644
index 0000000..ddcaa24
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/orgs_teams.go
@@ -0,0 +1,399 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Team represents a team within a GitHub organization.  Teams are used to
+// manage access to an organization's repositories.
+type Team struct {
+	ID          *int    `json:"id,omitempty"`
+	Name        *string `json:"name,omitempty"`
+	Description *string `json:"description,omitempty"`
+	URL         *string `json:"url,omitempty"`
+	Slug        *string `json:"slug,omitempty"`
+
+	// Permission is deprecated when creating or editing a team in an org
+	// using the new GitHub permission model.  It no longer identifies the
+	// permission a team has on its repos, but only specifies the default
+	// permission a repo is initially added with.  Avoid confusion by
+	// specifying a permission value when calling AddTeamRepo.
+	Permission *string `json:"permission,omitempty"`
+
+	// Privacy identifies the level of privacy this team should have.
+	// Possible values are:
+	//     secret - only visible to organization owners and members of this team
+	//     closed - visible to all members of this organization
+	// Default is "secret".
+	Privacy *string `json:"privacy,omitempty"`
+
+	MembersCount    *int          `json:"members_count,omitempty"`
+	ReposCount      *int          `json:"repos_count,omitempty"`
+	Organization    *Organization `json:"organization,omitempty"`
+	MembersURL      *string       `json:"members_url,omitempty"`
+	RepositoriesURL *string       `json:"repositories_url,omitempty"`
+}
+
+func (t Team) String() string {
+	return Stringify(t)
+}
+
+// ListTeams lists all of the teams for an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#list-teams
+func (s *OrganizationsService) ListTeams(org string, opt *ListOptions) ([]Team, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/teams", org)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	teams := new([]Team)
+	resp, err := s.client.Do(req, teams)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *teams, resp, err
+}
+
+// GetTeam fetches a team by ID.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#get-team
+func (s *OrganizationsService) GetTeam(team int) (*Team, *Response, error) {
+	u := fmt.Sprintf("teams/%v", team)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	t := new(Team)
+	resp, err := s.client.Do(req, t)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return t, resp, err
+}
+
+// CreateTeam creates a new team within an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#create-team
+func (s *OrganizationsService) CreateTeam(org string, team *Team) (*Team, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/teams", org)
+	req, err := s.client.NewRequest("POST", u, team)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if team.Privacy != nil {
+		req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+	}
+
+	t := new(Team)
+	resp, err := s.client.Do(req, t)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return t, resp, err
+}
+
+// EditTeam edits a team.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#edit-team
+func (s *OrganizationsService) EditTeam(id int, team *Team) (*Team, *Response, error) {
+	u := fmt.Sprintf("teams/%v", id)
+	req, err := s.client.NewRequest("PATCH", u, team)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if team.Privacy != nil {
+		req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+	}
+
+	t := new(Team)
+	resp, err := s.client.Do(req, t)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return t, resp, err
+}
+
+// DeleteTeam deletes a team.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#delete-team
+func (s *OrganizationsService) DeleteTeam(team int) (*Response, error) {
+	u := fmt.Sprintf("teams/%v", team)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// OrganizationListTeamMembersOptions specifies the optional parameters to the
+// OrganizationsService.ListTeamMembers method.
+type OrganizationListTeamMembersOptions struct {
+	// Role filters members returned by their role in the team.  Possible
+	// values are "all", "member", "maintainer".  Default is "all".
+	Role string `url:"role,omitempty"`
+
+	ListOptions
+}
+
+// ListTeamMembers lists all of the users who are members of the specified
+// team.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#list-team-members
+func (s *OrganizationsService) ListTeamMembers(team int, opt *OrganizationListTeamMembersOptions) ([]User, *Response, error) {
+	u := fmt.Sprintf("teams/%v/members", team)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if opt != nil && opt.Role != "" {
+		req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+	}
+
+	members := new([]User)
+	resp, err := s.client.Do(req, members)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *members, resp, err
+}
+
+// IsTeamMember checks if a user is a member of the specified team.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#get-team-member
+func (s *OrganizationsService) IsTeamMember(team int, user string) (bool, *Response, error) {
+	u := fmt.Sprintf("teams/%v/members/%v", team, user)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+
+	resp, err := s.client.Do(req, nil)
+	member, err := parseBoolResponse(err)
+	return member, resp, err
+}
+
+// ListTeamRepos lists the repositories that the specified team has access to.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#list-team-repos
+func (s *OrganizationsService) ListTeamRepos(team int, opt *ListOptions) ([]Repository, *Response, error) {
+	u := fmt.Sprintf("teams/%v/repos", team)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	repos := new([]Repository)
+	resp, err := s.client.Do(req, repos)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *repos, resp, err
+}
+
+// IsTeamRepo checks if a team manages the specified repository.  If the
+// repository is managed by team, a Repository is returned which includes the
+// permissions team has for that repo.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#get-team-repo
+func (s *OrganizationsService) IsTeamRepo(team int, owner string, repo string) (*Repository, *Response, error) {
+	u := fmt.Sprintf("teams/%v/repos/%v/%v", team, owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req.Header.Set("Accept", mediaTypeOrgPermissionRepoPreview)
+
+	repository := new(Repository)
+	resp, err := s.client.Do(req, repository)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return repository, resp, err
+}
+
+// OrganizationAddTeamRepoOptions specifies the optional parameters to the
+// OrganizationsService.AddTeamRepo method.
+type OrganizationAddTeamRepoOptions struct {
+	// Permission specifies the permission to grant the team on this repository.
+	// Possible values are:
+	//     pull - team members can pull, but not push to or administer this repository
+	//     push - team members can pull and push, but not administer this repository
+	//     admin - team members can pull, push and administer this repository
+	//
+	// If not specified, the team's permission attribute will be used.
+	Permission string `json:"permission,omitempty"`
+}
+
+// AddTeamRepo adds a repository to be managed by the specified team.  The
+// specified repository must be owned by the organization to which the team
+// belongs, or a direct fork of a repository owned by the organization.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#add-team-repo
+func (s *OrganizationsService) AddTeamRepo(team int, owner string, repo string, opt *OrganizationAddTeamRepoOptions) (*Response, error) {
+	u := fmt.Sprintf("teams/%v/repos/%v/%v", team, owner, repo)
+	req, err := s.client.NewRequest("PUT", u, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	if opt != nil {
+		req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// RemoveTeamRepo removes a repository from being managed by the specified
+// team.  Note that this does not delete the repository, it just removes it
+// from the team.
+//
+// GitHub API docs: http://developer.github.com/v3/orgs/teams/#remove-team-repo
+func (s *OrganizationsService) RemoveTeamRepo(team int, owner string, repo string) (*Response, error) {
+	u := fmt.Sprintf("teams/%v/repos/%v/%v", team, owner, repo)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// ListUserTeams lists a user's teams
+// GitHub API docs: https://developer.github.com/v3/orgs/teams/#list-user-teams
+func (s *OrganizationsService) ListUserTeams(opt *ListOptions) ([]Team, *Response, error) {
+	u := "user/teams"
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	teams := new([]Team)
+	resp, err := s.client.Do(req, teams)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *teams, resp, err
+}
+
+// GetTeamMembership returns the membership status for a user in a team.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/teams/#get-team-membership
+func (s *OrganizationsService) GetTeamMembership(team int, user string) (*Membership, *Response, error) {
+	u := fmt.Sprintf("teams/%v/memberships/%v", team, user)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	t := new(Membership)
+	resp, err := s.client.Do(req, t)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return t, resp, err
+}
+
+// OrganizationAddTeamMembershipOptions does stuff specifies the optional
+// parameters to the OrganizationsService.AddTeamMembership method.
+type OrganizationAddTeamMembershipOptions struct {
+	// Role specifies the role the user should have in the team.  Possible
+	// values are:
+	//     member - a normal member of the team
+	//     maintainer - a team maintainer. Able to add/remove other team
+	//                  members, promote other team members to team
+	//                  maintainer, and edit the team’s name and description
+	//
+	// Default value is "member".
+	Role string `json:"role,omitempty"`
+}
+
+// AddTeamMembership adds or invites a user to a team.
+//
+// In order to add a membership between a user and a team, the authenticated
+// user must have 'admin' permissions to the team or be an owner of the
+// organization that the team is associated with.
+//
+// If the user is already a part of the team's organization (meaning they're on
+// at least one other team in the organization), this endpoint will add the
+// user to the team.
+//
+// If the user is completely unaffiliated with the team's organization (meaning
+// they're on none of the organization's teams), this endpoint will send an
+// invitation to the user via email. This newly-created membership will be in
+// the "pending" state until the user accepts the invitation, at which point
+// the membership will transition to the "active" state and the user will be
+// added as a member of the team.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/teams/#add-team-membership
+func (s *OrganizationsService) AddTeamMembership(team int, user string, opt *OrganizationAddTeamMembershipOptions) (*Membership, *Response, error) {
+	u := fmt.Sprintf("teams/%v/memberships/%v", team, user)
+	req, err := s.client.NewRequest("PUT", u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if opt != nil {
+		req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+	}
+
+	t := new(Membership)
+	resp, err := s.client.Do(req, t)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return t, resp, err
+}
+
+// RemoveTeamMembership removes a user from a team.
+//
+// GitHub API docs: https://developer.github.com/v3/orgs/teams/#remove-team-membership
+func (s *OrganizationsService) RemoveTeamMembership(team int, user string) (*Response, error) {
+	u := fmt.Sprintf("teams/%v/memberships/%v", team, user)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/pulls.go b/vendor/github.com/google/go-github/github/pulls.go
new file mode 100644
index 0000000..8f31ab5
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/pulls.go
@@ -0,0 +1,276 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// PullRequestsService handles communication with the pull request related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/pulls/
+type PullRequestsService struct {
+	client *Client
+}
+
+// PullRequest represents a GitHub pull request on a repository.
+type PullRequest struct {
+	Number       *int       `json:"number,omitempty"`
+	State        *string    `json:"state,omitempty"`
+	Title        *string    `json:"title,omitempty"`
+	Body         *string    `json:"body,omitempty"`
+	CreatedAt    *time.Time `json:"created_at,omitempty"`
+	UpdatedAt    *time.Time `json:"updated_at,omitempty"`
+	ClosedAt     *time.Time `json:"closed_at,omitempty"`
+	MergedAt     *time.Time `json:"merged_at,omitempty"`
+	User         *User      `json:"user,omitempty"`
+	Merged       *bool      `json:"merged,omitempty"`
+	Mergeable    *bool      `json:"mergeable,omitempty"`
+	MergedBy     *User      `json:"merged_by,omitempty"`
+	Comments     *int       `json:"comments,omitempty"`
+	Commits      *int       `json:"commits,omitempty"`
+	Additions    *int       `json:"additions,omitempty"`
+	Deletions    *int       `json:"deletions,omitempty"`
+	ChangedFiles *int       `json:"changed_files,omitempty"`
+	URL          *string    `json:"url,omitempty"`
+	HTMLURL      *string    `json:"html_url,omitempty"`
+	IssueURL     *string    `json:"issue_url,omitempty"`
+	StatusesURL  *string    `json:"statuses_url,omitempty"`
+	DiffURL      *string    `json:"diff_url,omitempty"`
+	PatchURL     *string    `json:"patch_url,omitempty"`
+	Assignee     *User      `json:"assignee,omitempty"` // probably only in webhooks
+
+	Head *PullRequestBranch `json:"head,omitempty"`
+	Base *PullRequestBranch `json:"base,omitempty"`
+}
+
+func (p PullRequest) String() string {
+	return Stringify(p)
+}
+
+// PullRequestBranch represents a base or head branch in a GitHub pull request.
+type PullRequestBranch struct {
+	Label *string     `json:"label,omitempty"`
+	Ref   *string     `json:"ref,omitempty"`
+	SHA   *string     `json:"sha,omitempty"`
+	Repo  *Repository `json:"repo,omitempty"`
+	User  *User       `json:"user,omitempty"`
+}
+
+// PullRequestListOptions specifies the optional parameters to the
+// PullRequestsService.List method.
+type PullRequestListOptions struct {
+	// State filters pull requests based on their state.  Possible values are:
+	// open, closed.  Default is "open".
+	State string `url:"state,omitempty"`
+
+	// Head filters pull requests by head user and branch name in the format of:
+	// "user:ref-name".
+	Head string `url:"head,omitempty"`
+
+	// Base filters pull requests by base branch name.
+	Base string `url:"base,omitempty"`
+
+	// Sort specifies how to sort pull requests. Possible values are: created,
+	// updated, popularity, long-running. Default is "created".
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort pull requests. Possible values are: asc, desc.
+	// If Sort is "created" or not specified, Default is "desc", otherwise Default
+	// is "asc"
+	Direction string `url:"direction,omitempty"`
+
+	ListOptions
+}
+
+// List the pull requests for the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/pulls/#list-pull-requests
+func (s *PullRequestsService) List(owner string, repo string, opt *PullRequestListOptions) ([]PullRequest, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	pulls := new([]PullRequest)
+	resp, err := s.client.Do(req, pulls)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *pulls, resp, err
+}
+
+// Get a single pull request.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/#get-a-single-pull-request
+func (s *PullRequestsService) Get(owner string, repo string, number int) (*PullRequest, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/%d", owner, repo, number)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	pull := new(PullRequest)
+	resp, err := s.client.Do(req, pull)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return pull, resp, err
+}
+
+// NewPullRequest represents a new pull request to be created.
+type NewPullRequest struct {
+	Title *string `json:"title,omitempty"`
+	Head  *string `json:"head,omitempty"`
+	Base  *string `json:"base,omitempty"`
+	Body  *string `json:"body,omitempty"`
+	Issue *int    `json:"issue,omitempty"`
+}
+
+// Create a new pull request on the specified repository.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/#create-a-pull-request
+func (s *PullRequestsService) Create(owner string, repo string, pull *NewPullRequest) (*PullRequest, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls", owner, repo)
+	req, err := s.client.NewRequest("POST", u, pull)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	p := new(PullRequest)
+	resp, err := s.client.Do(req, p)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return p, resp, err
+}
+
+// Edit a pull request.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/#update-a-pull-request
+func (s *PullRequestsService) Edit(owner string, repo string, number int, pull *PullRequest) (*PullRequest, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/%d", owner, repo, number)
+	req, err := s.client.NewRequest("PATCH", u, pull)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	p := new(PullRequest)
+	resp, err := s.client.Do(req, p)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return p, resp, err
+}
+
+// ListCommits lists the commits in a pull request.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/#list-commits-on-a-pull-request
+func (s *PullRequestsService) ListCommits(owner string, repo string, number int, opt *ListOptions) ([]RepositoryCommit, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/%d/commits", owner, repo, number)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	commits := new([]RepositoryCommit)
+	resp, err := s.client.Do(req, commits)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *commits, resp, err
+}
+
+// ListFiles lists the files in a pull request.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/#list-pull-requests-files
+func (s *PullRequestsService) ListFiles(owner string, repo string, number int, opt *ListOptions) ([]CommitFile, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/%d/files", owner, repo, number)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	commitFiles := new([]CommitFile)
+	resp, err := s.client.Do(req, commitFiles)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *commitFiles, resp, err
+}
+
+// IsMerged checks if a pull request has been merged.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/#get-if-a-pull-request-has-been-merged
+func (s *PullRequestsService) IsMerged(owner string, repo string, number int) (bool, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/%d/merge", owner, repo, number)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+
+	resp, err := s.client.Do(req, nil)
+	merged, err := parseBoolResponse(err)
+	return merged, resp, err
+}
+
+// PullRequestMergeResult represents the result of merging a pull request.
+type PullRequestMergeResult struct {
+	SHA     *string `json:"sha,omitempty"`
+	Merged  *bool   `json:"merged,omitempty"`
+	Message *string `json:"message,omitempty"`
+}
+
+type pullRequestMergeRequest struct {
+	CommitMessage *string `json:"commit_message"`
+}
+
+// Merge a pull request (Merge Button™).
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/#merge-a-pull-request-merge-buttontrade
+func (s *PullRequestsService) Merge(owner string, repo string, number int, commitMessage string) (*PullRequestMergeResult, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/%d/merge", owner, repo, number)
+
+	req, err := s.client.NewRequest("PUT", u, &pullRequestMergeRequest{
+		CommitMessage: &commitMessage,
+	})
+
+	if err != nil {
+		return nil, nil, err
+	}
+
+	mergeResult := new(PullRequestMergeResult)
+	resp, err := s.client.Do(req, mergeResult)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return mergeResult, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/pulls_comments.go b/vendor/github.com/google/go-github/github/pulls_comments.go
new file mode 100644
index 0000000..247f179
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/pulls_comments.go
@@ -0,0 +1,156 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// PullRequestComment represents a comment left on a pull request.
+type PullRequestComment struct {
+	ID               *int       `json:"id,omitempty"`
+	InReplyTo        *int       `json:"in_reply_to,omitempty"`
+	Body             *string    `json:"body,omitempty"`
+	Path             *string    `json:"path,omitempty"`
+	DiffHunk         *string    `json:"diff_hunk,omitempty"`
+	Position         *int       `json:"position,omitempty"`
+	OriginalPosition *int       `json:"original_position,omitempty"`
+	CommitID         *string    `json:"commit_id,omitempty"`
+	OriginalCommitID *string    `json:"original_commit_id,omitempty"`
+	User             *User      `json:"user,omitempty"`
+	Reactions        *Reactions `json:"reactions,omitempty"`
+	CreatedAt        *time.Time `json:"created_at,omitempty"`
+	UpdatedAt        *time.Time `json:"updated_at,omitempty"`
+	URL              *string    `json:"url,omitempty"`
+	HTMLURL          *string    `json:"html_url,omitempty"`
+	PullRequestURL   *string    `json:"pull_request_url,omitempty"`
+}
+
+func (p PullRequestComment) String() string {
+	return Stringify(p)
+}
+
+// PullRequestListCommentsOptions specifies the optional parameters to the
+// PullRequestsService.ListComments method.
+type PullRequestListCommentsOptions struct {
+	// Sort specifies how to sort comments.  Possible values are: created, updated.
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort comments.  Possible values are: asc, desc.
+	Direction string `url:"direction,omitempty"`
+
+	// Since filters comments by time.
+	Since time.Time `url:"since,omitempty"`
+
+	ListOptions
+}
+
+// ListComments lists all comments on the specified pull request.  Specifying a
+// pull request number of 0 will return all comments on all pull requests for
+// the repository.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/comments/#list-comments-on-a-pull-request
+func (s *PullRequestsService) ListComments(owner string, repo string, number int, opt *PullRequestListCommentsOptions) ([]PullRequestComment, *Response, error) {
+	var u string
+	if number == 0 {
+		u = fmt.Sprintf("repos/%v/%v/pulls/comments", owner, repo)
+	} else {
+		u = fmt.Sprintf("repos/%v/%v/pulls/%d/comments", owner, repo, number)
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	comments := new([]PullRequestComment)
+	resp, err := s.client.Do(req, comments)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *comments, resp, err
+}
+
+// GetComment fetches the specified pull request comment.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/comments/#get-a-single-comment
+func (s *PullRequestsService) GetComment(owner string, repo string, number int) (*PullRequestComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/comments/%d", owner, repo, number)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	comment := new(PullRequestComment)
+	resp, err := s.client.Do(req, comment)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return comment, resp, err
+}
+
+// CreateComment creates a new comment on the specified pull request.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/comments/#create-a-comment
+func (s *PullRequestsService) CreateComment(owner string, repo string, number int, comment *PullRequestComment) (*PullRequestComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/%d/comments", owner, repo, number)
+	req, err := s.client.NewRequest("POST", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(PullRequestComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// EditComment updates a pull request comment.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/comments/#edit-a-comment
+func (s *PullRequestsService) EditComment(owner string, repo string, number int, comment *PullRequestComment) (*PullRequestComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/comments/%d", owner, repo, number)
+	req, err := s.client.NewRequest("PATCH", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(PullRequestComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// DeleteComment deletes a pull request comment.
+//
+// GitHub API docs: https://developer.github.com/v3/pulls/comments/#delete-a-comment
+func (s *PullRequestsService) DeleteComment(owner string, repo string, number int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/comments/%d", owner, repo, number)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/reactions.go b/vendor/github.com/google/go-github/github/reactions.go
new file mode 100644
index 0000000..283938a
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/reactions.go
@@ -0,0 +1,272 @@
+// Copyright 2016 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// ReactionsService provides access to the reactions-related functions in the
+// GitHub API.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/
+type ReactionsService struct {
+	client *Client
+}
+
+// Reaction represents a GitHub reaction.
+type Reaction struct {
+	// ID is the Reaction ID.
+	ID     *int `json:"id,omitempty"`
+	UserID *int `json:"user_id,omitempty"`
+	// Content is the type of reaction.
+	// Possible values are:
+	//     "+1", "-1", "laugh", "confused", "heart", "hooray".
+	Content *string `json:"content,omitempty"`
+}
+
+// Reactions represents a summary of GitHub reactions.
+type Reactions struct {
+	TotalCount *int    `json:"total_count,omitempty"`
+	PlusOne    *int    `json:"+1,omitempty"`
+	MinusOne   *int    `json:"-1,omitempty"`
+	Laugh      *int    `json:"laugh,omitempty"`
+	Confused   *int    `json:"confused,omitempty"`
+	Heart      *int    `json:"heart,omitempty"`
+	Hooray     *int    `json:"hooray,omitempty"`
+	URL        *string `json:"url,omitempty"`
+}
+
+func (r Reaction) String() string {
+	return Stringify(r)
+}
+
+// ListCommentReactions lists the reactions for a commit comment.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#list-reactions-for-a-commit-comment
+func (s *ReactionsService) ListCommentReactions(owner, repo string, id int, opt *ListOptions) ([]*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/comments/%v/reactions", owner, repo, id)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	var m []*Reaction
+	resp, err := s.client.Do(req, &m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// CreateCommentReaction creates a reaction for a commit comment.
+// Note that if you have already created a reaction of type content, the
+// previously created reaction will be returned with Status: 200 OK.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#create-reaction-for-a-commit-comment
+func (s ReactionsService) CreateCommentReaction(owner, repo string, id int, content string) (*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/comments/%v/reactions", owner, repo, id)
+
+	body := &Reaction{Content: String(content)}
+	req, err := s.client.NewRequest("POST", u, body)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	m := &Reaction{}
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// ListIssueReactions lists the reactions for an issue.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#list-reactions-for-an-issue
+func (s *ReactionsService) ListIssueReactions(owner, repo string, number int, opt *ListOptions) ([]*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%v/reactions", owner, repo, number)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	var m []*Reaction
+	resp, err := s.client.Do(req, &m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// CreateIssueReaction creates a reaction for an issue.
+// Note that if you have already created a reaction of type content, the
+// previously created reaction will be returned with Status: 200 OK.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#create-reaction-for-an-issue
+func (s ReactionsService) CreateIssueReaction(owner, repo string, number int, content string) (*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/%v/reactions", owner, repo, number)
+
+	body := &Reaction{Content: String(content)}
+	req, err := s.client.NewRequest("POST", u, body)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	m := &Reaction{}
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// ListIssueCommentReactions lists the reactions for an issue comment.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#list-reactions-for-an-issue-comment
+func (s *ReactionsService) ListIssueCommentReactions(owner, repo string, id int, opt *ListOptions) ([]*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/comments/%v/reactions", owner, repo, id)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	var m []*Reaction
+	resp, err := s.client.Do(req, &m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// CreateIssueCommentReaction creates a reaction for an issue comment.
+// Note that if you have already created a reaction of type content, the
+// previously created reaction will be returned with Status: 200 OK.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#create-reaction-for-an-issue-comment
+func (s ReactionsService) CreateIssueCommentReaction(owner, repo string, id int, content string) (*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/issues/comments/%v/reactions", owner, repo, id)
+
+	body := &Reaction{Content: String(content)}
+	req, err := s.client.NewRequest("POST", u, body)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	m := &Reaction{}
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// ListPullRequestCommentReactions lists the reactions for a pull request review comment.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#list-reactions-for-an-issue-comment
+func (s *ReactionsService) ListPullRequestCommentReactions(owner, repo string, id int, opt *ListOptions) ([]*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/comments/%v/reactions", owner, repo, id)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	var m []*Reaction
+	resp, err := s.client.Do(req, &m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// CreatePullRequestCommentReaction creates a reaction for a pull request review comment.
+// Note that if you have already created a reaction of type content, the
+// previously created reaction will be returned with Status: 200 OK.
+//
+// GitHub API docs: https://developer.github.com/v3/reactions/#create-reaction-for-an-issue-comment
+func (s ReactionsService) CreatePullRequestCommentReaction(owner, repo string, id int, content string) (*Reaction, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pulls/comments/%v/reactions", owner, repo, id)
+
+	body := &Reaction{Content: String(content)}
+	req, err := s.client.NewRequest("POST", u, body)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	m := &Reaction{}
+	resp, err := s.client.Do(req, m)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return m, resp, nil
+}
+
+// DeleteReaction deletes a reaction.
+//
+// GitHub API docs: https://developer.github.com/v3/reaction/reactions/#delete-a-reaction-archive
+func (s *ReactionsService) DeleteReaction(id int) (*Response, error) {
+	u := fmt.Sprintf("/reactions/%v", id)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/repos.go b/vendor/github.com/google/go-github/github/repos.go
new file mode 100644
index 0000000..4909b16
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos.go
@@ -0,0 +1,582 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// RepositoriesService handles communication with the repository related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/
+type RepositoriesService struct {
+	client *Client
+}
+
+// Repository represents a GitHub repository.
+type Repository struct {
+	ID               *int             `json:"id,omitempty"`
+	Owner            *User            `json:"owner,omitempty"`
+	Name             *string          `json:"name,omitempty"`
+	FullName         *string          `json:"full_name,omitempty"`
+	Description      *string          `json:"description,omitempty"`
+	Homepage         *string          `json:"homepage,omitempty"`
+	DefaultBranch    *string          `json:"default_branch,omitempty"`
+	MasterBranch     *string          `json:"master_branch,omitempty"`
+	CreatedAt        *Timestamp       `json:"created_at,omitempty"`
+	PushedAt         *Timestamp       `json:"pushed_at,omitempty"`
+	UpdatedAt        *Timestamp       `json:"updated_at,omitempty"`
+	HTMLURL          *string          `json:"html_url,omitempty"`
+	CloneURL         *string          `json:"clone_url,omitempty"`
+	GitURL           *string          `json:"git_url,omitempty"`
+	MirrorURL        *string          `json:"mirror_url,omitempty"`
+	SSHURL           *string          `json:"ssh_url,omitempty"`
+	SVNURL           *string          `json:"svn_url,omitempty"`
+	Language         *string          `json:"language,omitempty"`
+	Fork             *bool            `json:"fork"`
+	ForksCount       *int             `json:"forks_count,omitempty"`
+	NetworkCount     *int             `json:"network_count,omitempty"`
+	OpenIssuesCount  *int             `json:"open_issues_count,omitempty"`
+	StargazersCount  *int             `json:"stargazers_count,omitempty"`
+	SubscribersCount *int             `json:"subscribers_count,omitempty"`
+	WatchersCount    *int             `json:"watchers_count,omitempty"`
+	Size             *int             `json:"size,omitempty"`
+	AutoInit         *bool            `json:"auto_init,omitempty"`
+	Parent           *Repository      `json:"parent,omitempty"`
+	Source           *Repository      `json:"source,omitempty"`
+	Organization     *Organization    `json:"organization,omitempty"`
+	Permissions      *map[string]bool `json:"permissions,omitempty"`
+
+	// Only provided when using RepositoriesService.Get while in preview
+	License *License `json:"license,omitempty"`
+
+	// Additional mutable fields when creating and editing a repository
+	Private      *bool `json:"private"`
+	HasIssues    *bool `json:"has_issues"`
+	HasWiki      *bool `json:"has_wiki"`
+	HasDownloads *bool `json:"has_downloads"`
+	// Creating an organization repository. Required for non-owners.
+	TeamID *int `json:"team_id"`
+
+	// API URLs
+	URL              *string `json:"url,omitempty"`
+	ArchiveURL       *string `json:"archive_url,omitempty"`
+	AssigneesURL     *string `json:"assignees_url,omitempty"`
+	BlobsURL         *string `json:"blobs_url,omitempty"`
+	BranchesURL      *string `json:"branches_url,omitempty"`
+	CollaboratorsURL *string `json:"collaborators_url,omitempty"`
+	CommentsURL      *string `json:"comments_url,omitempty"`
+	CommitsURL       *string `json:"commits_url,omitempty"`
+	CompareURL       *string `json:"compare_url,omitempty"`
+	ContentsURL      *string `json:"contents_url,omitempty"`
+	ContributorsURL  *string `json:"contributors_url,omitempty"`
+	DownloadsURL     *string `json:"downloads_url,omitempty"`
+	EventsURL        *string `json:"events_url,omitempty"`
+	ForksURL         *string `json:"forks_url,omitempty"`
+	GitCommitsURL    *string `json:"git_commits_url,omitempty"`
+	GitRefsURL       *string `json:"git_refs_url,omitempty"`
+	GitTagsURL       *string `json:"git_tags_url,omitempty"`
+	HooksURL         *string `json:"hooks_url,omitempty"`
+	IssueCommentURL  *string `json:"issue_comment_url,omitempty"`
+	IssueEventsURL   *string `json:"issue_events_url,omitempty"`
+	IssuesURL        *string `json:"issues_url,omitempty"`
+	KeysURL          *string `json:"keys_url,omitempty"`
+	LabelsURL        *string `json:"labels_url,omitempty"`
+	LanguagesURL     *string `json:"languages_url,omitempty"`
+	MergesURL        *string `json:"merges_url,omitempty"`
+	MilestonesURL    *string `json:"milestones_url,omitempty"`
+	NotificationsURL *string `json:"notifications_url,omitempty"`
+	PullsURL         *string `json:"pulls_url,omitempty"`
+	ReleasesURL      *string `json:"releases_url,omitempty"`
+	StargazersURL    *string `json:"stargazers_url,omitempty"`
+	StatusesURL      *string `json:"statuses_url,omitempty"`
+	SubscribersURL   *string `json:"subscribers_url,omitempty"`
+	SubscriptionURL  *string `json:"subscription_url,omitempty"`
+	TagsURL          *string `json:"tags_url,omitempty"`
+	TreesURL         *string `json:"trees_url,omitempty"`
+	TeamsURL         *string `json:"teams_url,omitempty"`
+
+	// TextMatches is only populated from search results that request text matches
+	// See: search.go and https://developer.github.com/v3/search/#text-match-metadata
+	TextMatches []TextMatch `json:"text_matches,omitempty"`
+}
+
+func (r Repository) String() string {
+	return Stringify(r)
+}
+
+// RepositoryListOptions specifies the optional parameters to the
+// RepositoriesService.List method.
+type RepositoryListOptions struct {
+	// Type of repositories to list.  Possible values are: all, owner, public,
+	// private, member.  Default is "all".
+	Type string `url:"type,omitempty"`
+
+	// How to sort the repository list.  Possible values are: created, updated,
+	// pushed, full_name.  Default is "full_name".
+	Sort string `url:"sort,omitempty"`
+
+	// Direction in which to sort repositories.  Possible values are: asc, desc.
+	// Default is "asc" when sort is "full_name", otherwise default is "desc".
+	Direction string `url:"direction,omitempty"`
+
+	ListOptions
+}
+
+// List the repositories for a user.  Passing the empty string will list
+// repositories for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#list-user-repositories
+func (s *RepositoriesService) List(user string, opt *RepositoryListOptions) ([]Repository, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/repos", user)
+	} else {
+		u = "user/repos"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when license support fully launches
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
+	repos := new([]Repository)
+	resp, err := s.client.Do(req, repos)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *repos, resp, err
+}
+
+// RepositoryListByOrgOptions specifies the optional parameters to the
+// RepositoriesService.ListByOrg method.
+type RepositoryListByOrgOptions struct {
+	// Type of repositories to list.  Possible values are: all, public, private,
+	// forks, sources, member.  Default is "all".
+	Type string `url:"type,omitempty"`
+
+	ListOptions
+}
+
+// ListByOrg lists the repositories for an organization.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#list-organization-repositories
+func (s *RepositoriesService) ListByOrg(org string, opt *RepositoryListByOrgOptions) ([]Repository, *Response, error) {
+	u := fmt.Sprintf("orgs/%v/repos", org)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when license support fully launches
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
+	repos := new([]Repository)
+	resp, err := s.client.Do(req, repos)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *repos, resp, err
+}
+
+// RepositoryListAllOptions specifies the optional parameters to the
+// RepositoriesService.ListAll method.
+type RepositoryListAllOptions struct {
+	// ID of the last repository seen
+	Since int `url:"since,omitempty"`
+
+	ListOptions
+}
+
+// ListAll lists all GitHub repositories in the order that they were created.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#list-all-public-repositories
+func (s *RepositoriesService) ListAll(opt *RepositoryListAllOptions) ([]Repository, *Response, error) {
+	u, err := addOptions("repositories", opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	repos := new([]Repository)
+	resp, err := s.client.Do(req, repos)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *repos, resp, err
+}
+
+// Create a new repository.  If an organization is specified, the new
+// repository will be created under that org.  If the empty string is
+// specified, it will be created for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#create
+func (s *RepositoriesService) Create(org string, repo *Repository) (*Repository, *Response, error) {
+	var u string
+	if org != "" {
+		u = fmt.Sprintf("orgs/%v/repos", org)
+	} else {
+		u = "user/repos"
+	}
+
+	req, err := s.client.NewRequest("POST", u, repo)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := new(Repository)
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return r, resp, err
+}
+
+// Get fetches a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#get
+func (s *RepositoriesService) Get(owner, repo string) (*Repository, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when the license support fully launches
+	// https://developer.github.com/v3/licenses/#get-a-repositorys-license
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
+	repository := new(Repository)
+	resp, err := s.client.Do(req, repository)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return repository, resp, err
+}
+
+// GetByID fetches a repository.
+//
+// Note: GetByID uses the undocumented GitHub API endpoint /repositories/:id.
+func (s *RepositoriesService) GetByID(id int) (*Repository, *Response, error) {
+	u := fmt.Sprintf("repositories/%d", id)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when the license support fully launches
+	// https://developer.github.com/v3/licenses/#get-a-repositorys-license
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
+	repository := new(Repository)
+	resp, err := s.client.Do(req, repository)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return repository, resp, err
+}
+
+// Edit updates a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#edit
+func (s *RepositoriesService) Edit(owner, repo string, repository *Repository) (*Repository, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v", owner, repo)
+	req, err := s.client.NewRequest("PATCH", u, repository)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := new(Repository)
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return r, resp, err
+}
+
+// Delete a repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/#delete-a-repository
+func (s *RepositoriesService) Delete(owner, repo string) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v", owner, repo)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// Contributor represents a repository contributor
+type Contributor struct {
+	Login             *string `json:"login,omitempty"`
+	ID                *int    `json:"id,omitempty"`
+	AvatarURL         *string `json:"avatar_url,omitempty"`
+	GravatarID        *string `json:"gravatar_id,omitempty"`
+	URL               *string `json:"url,omitempty"`
+	HTMLURL           *string `json:"html_url,omitempty"`
+	FollowersURL      *string `json:"followers_url,omitempty"`
+	FollowingURL      *string `json:"following_url,omitempty"`
+	GistsURL          *string `json:"gists_url,omitempty"`
+	StarredURL        *string `json:"starred_url,omitempty"`
+	SubscriptionsURL  *string `json:"subscriptions_url,omitempty"`
+	OrganizationsURL  *string `json:"organizations_url,omitempty"`
+	ReposURL          *string `json:"repos_url,omitempty"`
+	EventsURL         *string `json:"events_url,omitempty"`
+	ReceivedEventsURL *string `json:"received_events_url,omitempty"`
+	Type              *string `json:"type,omitempty"`
+	SiteAdmin         *bool   `json:"site_admin"`
+	Contributions     *int    `json:"contributions,omitempty"`
+}
+
+// ListContributorsOptions specifies the optional parameters to the
+// RepositoriesService.ListContributors method.
+type ListContributorsOptions struct {
+	// Include anonymous contributors in results or not
+	Anon string `url:"anon,omitempty"`
+
+	ListOptions
+}
+
+// ListContributors lists contributors for a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#list-contributors
+func (s *RepositoriesService) ListContributors(owner string, repository string, opt *ListContributorsOptions) ([]Contributor, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/contributors", owner, repository)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	contributor := new([]Contributor)
+	resp, err := s.client.Do(req, contributor)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return *contributor, resp, err
+}
+
+// ListLanguages lists languages for the specified repository. The returned map
+// specifies the languages and the number of bytes of code written in that
+// language. For example:
+//
+//     {
+//       "C": 78769,
+//       "Python": 7769
+//     }
+//
+// GitHub API Docs: http://developer.github.com/v3/repos/#list-languages
+func (s *RepositoriesService) ListLanguages(owner string, repo string) (map[string]int, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/languages", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	languages := make(map[string]int)
+	resp, err := s.client.Do(req, &languages)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return languages, resp, err
+}
+
+// ListTeams lists the teams for the specified repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/#list-teams
+func (s *RepositoriesService) ListTeams(owner string, repo string, opt *ListOptions) ([]Team, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/teams", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	teams := new([]Team)
+	resp, err := s.client.Do(req, teams)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *teams, resp, err
+}
+
+// RepositoryTag represents a repository tag.
+type RepositoryTag struct {
+	Name       *string `json:"name,omitempty"`
+	Commit     *Commit `json:"commit,omitempty"`
+	ZipballURL *string `json:"zipball_url,omitempty"`
+	TarballURL *string `json:"tarball_url,omitempty"`
+}
+
+// ListTags lists tags for the specified repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/#list-tags
+func (s *RepositoriesService) ListTags(owner string, repo string, opt *ListOptions) ([]RepositoryTag, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/tags", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	tags := new([]RepositoryTag)
+	resp, err := s.client.Do(req, tags)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *tags, resp, err
+}
+
+// Branch represents a repository branch
+type Branch struct {
+	Name       *string     `json:"name,omitempty"`
+	Commit     *Commit     `json:"commit,omitempty"`
+	Protection *Protection `json:"protection,omitempty"`
+}
+
+// Protection represents a repository branch's protection
+type Protection struct {
+	Enabled              *bool                 `json:"enabled,omitempty"`
+	RequiredStatusChecks *RequiredStatusChecks `json:"required_status_checks,omitempty"`
+}
+
+// RequiredStatusChecks represents the protection status of a individual branch
+type RequiredStatusChecks struct {
+	// Who required status checks apply to.
+	// Possible values are:
+	//     off
+	//     non_admins
+	//     everyone
+	EnforcementLevel *string `json:"enforcement_level,omitempty"`
+	// The list of status checks which are required
+	Contexts *[]string `json:"contexts,omitempty"`
+}
+
+// ListBranches lists branches for the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/#list-branches
+func (s *RepositoriesService) ListBranches(owner string, repo string, opt *ListOptions) ([]Branch, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/branches", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req.Header.Set("Accept", mediaTypeProtectedBranchesPreview)
+
+	branches := new([]Branch)
+	resp, err := s.client.Do(req, branches)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *branches, resp, err
+}
+
+// GetBranch gets the specified branch for a repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/#get-branch
+func (s *RepositoriesService) GetBranch(owner, repo, branch string) (*Branch, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/branches/%v", owner, repo, branch)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req.Header.Set("Accept", mediaTypeProtectedBranchesPreview)
+
+	b := new(Branch)
+	resp, err := s.client.Do(req, b)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return b, resp, err
+}
+
+// EditBranch edits the branch (currently only Branch Protection)
+//
+// GitHub API docs: https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection
+func (s *RepositoriesService) EditBranch(owner, repo, branchName string, branch *Branch) (*Branch, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/branches/%v", owner, repo, branchName)
+	req, err := s.client.NewRequest("PATCH", u, branch)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req.Header.Set("Accept", mediaTypeProtectedBranchesPreview)
+
+	b := new(Branch)
+	resp, err := s.client.Do(req, b)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return b, resp, err
+}
+
+// License gets the contents of a repository's license if one is detected.
+//
+// GitHub API docs: https://developer.github.com/v3/licenses/#get-the-contents-of-a-repositorys-license
+func (s *RepositoriesService) License(owner, repo string) (*License, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/license", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := &Repository{}
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return r.License, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_collaborators.go b/vendor/github.com/google/go-github/github/repos_collaborators.go
new file mode 100644
index 0000000..61dc4ef
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_collaborators.go
@@ -0,0 +1,95 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// ListCollaborators lists the Github users that have access to the repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/collaborators/#list
+func (s *RepositoriesService) ListCollaborators(owner, repo string, opt *ListOptions) ([]User, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/collaborators", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+
+	users := new([]User)
+	resp, err := s.client.Do(req, users)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *users, resp, err
+}
+
+// IsCollaborator checks whether the specified Github user has collaborator
+// access to the given repo.
+// Note: This will return false if the user is not a collaborator OR the user
+// is not a GitHub user.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/collaborators/#get
+func (s *RepositoriesService) IsCollaborator(owner, repo, user string) (bool, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/collaborators/%v", owner, repo, user)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+
+	resp, err := s.client.Do(req, nil)
+	isCollab, err := parseBoolResponse(err)
+	return isCollab, resp, err
+}
+
+// RepositoryAddCollaboratorOptions specifies the optional parameters to the
+// RepositoriesService.AddCollaborator method.
+type RepositoryAddCollaboratorOptions struct {
+	// Permission specifies the permission to grant the user on this repository.
+	// Possible values are:
+	//     pull - team members can pull, but not push to or administer this repository
+	//     push - team members can pull and push, but not administer this repository
+	//     admin - team members can pull, push and administer this repository
+	//
+	// Default value is "pull".  This option is only valid for organization-owned repositories.
+	Permission string `json:"permission,omitempty"`
+}
+
+// AddCollaborator adds the specified Github user as collaborator to the given repo.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/collaborators/#add-collaborator
+func (s *RepositoriesService) AddCollaborator(owner, repo, user string, opt *RepositoryAddCollaboratorOptions) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/collaborators/%v", owner, repo, user)
+	req, err := s.client.NewRequest("PUT", u, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	if opt != nil {
+		req.Header.Set("Accept", mediaTypeOrgPermissionPreview)
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// RemoveCollaborator removes the specified Github user as collaborator from the given repo.
+// Note: Does not return error if a valid user that is not a collaborator is removed.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/collaborators/#remove-collaborator
+func (s *RepositoriesService) RemoveCollaborator(owner, repo, user string) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/collaborators/%v", owner, repo, user)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/repos_comments.go b/vendor/github.com/google/go-github/github/repos_comments.go
new file mode 100644
index 0000000..bba0fe7
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_comments.go
@@ -0,0 +1,160 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// RepositoryComment represents a comment for a commit, file, or line in a repository.
+type RepositoryComment struct {
+	HTMLURL   *string    `json:"html_url,omitempty"`
+	URL       *string    `json:"url,omitempty"`
+	ID        *int       `json:"id,omitempty"`
+	CommitID  *string    `json:"commit_id,omitempty"`
+	User      *User      `json:"user,omitempty"`
+	Reactions *Reactions `json:"reactions,omitempty"`
+	CreatedAt *time.Time `json:"created_at,omitempty"`
+	UpdatedAt *time.Time `json:"updated_at,omitempty"`
+
+	// User-mutable fields
+	Body *string `json:"body"`
+	// User-initialized fields
+	Path     *string `json:"path,omitempty"`
+	Position *int    `json:"position,omitempty"`
+}
+
+func (r RepositoryComment) String() string {
+	return Stringify(r)
+}
+
+// ListComments lists all the comments for the repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/comments/#list-commit-comments-for-a-repository
+func (s *RepositoriesService) ListComments(owner, repo string, opt *ListOptions) ([]RepositoryComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/comments", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	comments := new([]RepositoryComment)
+	resp, err := s.client.Do(req, comments)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *comments, resp, err
+}
+
+// ListCommitComments lists all the comments for a given commit SHA.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/comments/#list-comments-for-a-single-commit
+func (s *RepositoriesService) ListCommitComments(owner, repo, sha string, opt *ListOptions) ([]RepositoryComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/commits/%v/comments", owner, repo, sha)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	comments := new([]RepositoryComment)
+	resp, err := s.client.Do(req, comments)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *comments, resp, err
+}
+
+// CreateComment creates a comment for the given commit.
+// Note: GitHub allows for comments to be created for non-existing files and positions.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/comments/#create-a-commit-comment
+func (s *RepositoriesService) CreateComment(owner, repo, sha string, comment *RepositoryComment) (*RepositoryComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/commits/%v/comments", owner, repo, sha)
+	req, err := s.client.NewRequest("POST", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(RepositoryComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// GetComment gets a single comment from a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/comments/#get-a-single-commit-comment
+func (s *RepositoriesService) GetComment(owner, repo string, id int) (*RepositoryComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/comments/%v", owner, repo, id)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when this API fully launches.
+	req.Header.Set("Accept", mediaTypeReactionsPreview)
+
+	c := new(RepositoryComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// UpdateComment updates the body of a single comment.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/comments/#update-a-commit-comment
+func (s *RepositoriesService) UpdateComment(owner, repo string, id int, comment *RepositoryComment) (*RepositoryComment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/comments/%v", owner, repo, id)
+	req, err := s.client.NewRequest("PATCH", u, comment)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(RepositoryComment)
+	resp, err := s.client.Do(req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, err
+}
+
+// DeleteComment deletes a single comment from a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/comments/#delete-a-commit-comment
+func (s *RepositoriesService) DeleteComment(owner, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/comments/%v", owner, repo, id)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/repos_commits.go b/vendor/github.com/google/go-github/github/repos_commits.go
new file mode 100644
index 0000000..9cbdbfd
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_commits.go
@@ -0,0 +1,195 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"bytes"
+	"fmt"
+	"time"
+)
+
+// RepositoryCommit represents a commit in a repo.
+// Note that it's wrapping a Commit, so author/committer information is in two places,
+// but contain different details about them: in RepositoryCommit "github details", in Commit - "git details".
+type RepositoryCommit struct {
+	SHA       *string  `json:"sha,omitempty"`
+	Commit    *Commit  `json:"commit,omitempty"`
+	Author    *User    `json:"author,omitempty"`
+	Committer *User    `json:"committer,omitempty"`
+	Parents   []Commit `json:"parents,omitempty"`
+	Message   *string  `json:"message,omitempty"`
+	HTMLURL   *string  `json:"html_url,omitempty"`
+
+	// Details about how many changes were made in this commit. Only filled in during GetCommit!
+	Stats *CommitStats `json:"stats,omitempty"`
+	// Details about which files, and how this commit touched. Only filled in during GetCommit!
+	Files []CommitFile `json:"files,omitempty"`
+}
+
+func (r RepositoryCommit) String() string {
+	return Stringify(r)
+}
+
+// CommitStats represents the number of additions / deletions from a file in a given RepositoryCommit.
+type CommitStats struct {
+	Additions *int `json:"additions,omitempty"`
+	Deletions *int `json:"deletions,omitempty"`
+	Total     *int `json:"total,omitempty"`
+}
+
+func (c CommitStats) String() string {
+	return Stringify(c)
+}
+
+// CommitFile represents a file modified in a commit.
+type CommitFile struct {
+	SHA       *string `json:"sha,omitempty"`
+	Filename  *string `json:"filename,omitempty"`
+	Additions *int    `json:"additions,omitempty"`
+	Deletions *int    `json:"deletions,omitempty"`
+	Changes   *int    `json:"changes,omitempty"`
+	Status    *string `json:"status,omitempty"`
+	Patch     *string `json:"patch,omitempty"`
+}
+
+func (c CommitFile) String() string {
+	return Stringify(c)
+}
+
+// CommitsComparison is the result of comparing two commits.
+// See CompareCommits() for details.
+type CommitsComparison struct {
+	BaseCommit      *RepositoryCommit `json:"base_commit,omitempty"`
+	MergeBaseCommit *RepositoryCommit `json:"merge_base_commit,omitempty"`
+
+	// Head can be 'behind' or 'ahead'
+	Status       *string `json:"status,omitempty"`
+	AheadBy      *int    `json:"ahead_by,omitempty"`
+	BehindBy     *int    `json:"behind_by,omitempty"`
+	TotalCommits *int    `json:"total_commits,omitempty"`
+
+	Commits []RepositoryCommit `json:"commits,omitempty"`
+
+	Files []CommitFile `json:"files,omitempty"`
+}
+
+func (c CommitsComparison) String() string {
+	return Stringify(c)
+}
+
+// CommitsListOptions specifies the optional parameters to the
+// RepositoriesService.ListCommits method.
+type CommitsListOptions struct {
+	// SHA or branch to start listing Commits from.
+	SHA string `url:"sha,omitempty"`
+
+	// Path that should be touched by the returned Commits.
+	Path string `url:"path,omitempty"`
+
+	// Author of by which to filter Commits.
+	Author string `url:"author,omitempty"`
+
+	// Since when should Commits be included in the response.
+	Since time.Time `url:"since,omitempty"`
+
+	// Until when should Commits be included in the response.
+	Until time.Time `url:"until,omitempty"`
+
+	ListOptions
+}
+
+// ListCommits lists the commits of a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/commits/#list
+func (s *RepositoriesService) ListCommits(owner, repo string, opt *CommitsListOptions) ([]RepositoryCommit, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/commits", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	commits := new([]RepositoryCommit)
+	resp, err := s.client.Do(req, commits)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *commits, resp, err
+}
+
+// GetCommit fetches the specified commit, including all details about it.
+// todo: support media formats - https://github.com/google/go-github/issues/6
+//
+// GitHub API docs: http://developer.github.com/v3/repos/commits/#get-a-single-commit
+// See also: http://developer.github.com//v3/git/commits/#get-a-single-commit provides the same functionality
+func (s *RepositoriesService) GetCommit(owner, repo, sha string) (*RepositoryCommit, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/commits/%v", owner, repo, sha)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	commit := new(RepositoryCommit)
+	resp, err := s.client.Do(req, commit)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return commit, resp, err
+}
+
+// GetCommitSHA1 gets the SHA-1 of a commit reference.  If a last-known SHA1 is
+// supplied and no new commits have occurred, a 304 Unmodified response is returned.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/commits/#get-the-sha-1-of-a-commit-reference
+func (s *RepositoriesService) GetCommitSHA1(owner, repo, ref, lastSHA string) (string, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/commits/%v", owner, repo, ref)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return "", nil, err
+	}
+	if lastSHA != "" {
+		req.Header.Set("If-None-Match", `"`+lastSHA+`"`)
+	}
+
+	req.Header.Set("Accept", mediaTypeV3SHA)
+
+	var buf bytes.Buffer
+	resp, err := s.client.Do(req, &buf)
+	if err != nil {
+		return "", resp, err
+	}
+
+	return buf.String(), resp, err
+}
+
+// CompareCommits compares a range of commits with each other.
+// todo: support media formats - https://github.com/google/go-github/issues/6
+//
+// GitHub API docs: http://developer.github.com/v3/repos/commits/index.html#compare-two-commits
+func (s *RepositoriesService) CompareCommits(owner, repo string, base, head string) (*CommitsComparison, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/compare/%v...%v", owner, repo, base, head)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	comp := new(CommitsComparison)
+	resp, err := s.client.Do(req, comp)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return comp, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_contents.go b/vendor/github.com/google/go-github/github/repos_contents.go
new file mode 100644
index 0000000..ebf4d04
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_contents.go
@@ -0,0 +1,275 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Repository contents API methods.
+// http://developer.github.com/v3/repos/contents/
+
+package github
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"path"
+)
+
+// RepositoryContent represents a file or directory in a github repository.
+type RepositoryContent struct {
+	Type     *string `json:"type,omitempty"`
+	Encoding *string `json:"encoding,omitempty"`
+	Size     *int    `json:"size,omitempty"`
+	Name     *string `json:"name,omitempty"`
+	Path     *string `json:"path,omitempty"`
+	// Content contains the actual file content, which may be encoded.
+	// Callers should call GetContent which will decode the content if
+	// necessary.
+	Content     *string `json:"content,omitempty"`
+	SHA         *string `json:"sha,omitempty"`
+	URL         *string `json:"url,omitempty"`
+	GitURL      *string `json:"git_url,omitempty"`
+	HTMLURL     *string `json:"html_url,omitempty"`
+	DownloadURL *string `json:"download_url,omitempty"`
+}
+
+// RepositoryContentResponse holds the parsed response from CreateFile, UpdateFile, and DeleteFile.
+type RepositoryContentResponse struct {
+	Content *RepositoryContent `json:"content,omitempty"`
+	Commit  `json:"commit,omitempty"`
+}
+
+// RepositoryContentFileOptions specifies optional parameters for CreateFile, UpdateFile, and DeleteFile.
+type RepositoryContentFileOptions struct {
+	Message   *string       `json:"message,omitempty"`
+	Content   []byte        `json:"content,omitempty"` // unencoded
+	SHA       *string       `json:"sha,omitempty"`
+	Branch    *string       `json:"branch,omitempty"`
+	Author    *CommitAuthor `json:"author,omitempty"`
+	Committer *CommitAuthor `json:"committer,omitempty"`
+}
+
+// RepositoryContentGetOptions represents an optional ref parameter, which can be a SHA,
+// branch, or tag
+type RepositoryContentGetOptions struct {
+	Ref string `url:"ref,omitempty"`
+}
+
+// String converts RepositoryContent to a string. It's primarily for testing.
+func (r RepositoryContent) String() string {
+	return Stringify(r)
+}
+
+// Decode decodes the file content if it is base64 encoded.
+//
+// Deprecated: Use GetContent instead.
+func (r *RepositoryContent) Decode() ([]byte, error) {
+	if *r.Encoding != "base64" {
+		return nil, errors.New("cannot decode non-base64")
+	}
+	o, err := base64.StdEncoding.DecodeString(*r.Content)
+	if err != nil {
+		return nil, err
+	}
+	return o, nil
+}
+
+// GetContent returns the content of r, decoding it if necessary.
+func (r *RepositoryContent) GetContent() (string, error) {
+	var encoding string
+	if r.Encoding != nil {
+		encoding = *r.Encoding
+	}
+
+	switch encoding {
+	case "base64":
+		c, err := base64.StdEncoding.DecodeString(*r.Content)
+		return string(c), err
+	case "":
+		if r.Content == nil {
+			return "", nil
+		}
+		return *r.Content, nil
+	default:
+		return "", fmt.Errorf("unsupported content encoding: %v", encoding)
+	}
+}
+
+// GetReadme gets the Readme file for the repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/contents/#get-the-readme
+func (s *RepositoriesService) GetReadme(owner, repo string, opt *RepositoryContentGetOptions) (*RepositoryContent, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/readme", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	readme := new(RepositoryContent)
+	resp, err := s.client.Do(req, readme)
+	if err != nil {
+		return nil, resp, err
+	}
+	return readme, resp, err
+}
+
+// DownloadContents returns an io.ReadCloser that reads the contents of the
+// specified file. This function will work with files of any size, as opposed
+// to GetContents which is limited to 1 Mb files. It is the caller's
+// responsibility to close the ReadCloser.
+func (s *RepositoriesService) DownloadContents(owner, repo, filepath string, opt *RepositoryContentGetOptions) (io.ReadCloser, error) {
+	dir := path.Dir(filepath)
+	filename := path.Base(filepath)
+	_, dirContents, _, err := s.GetContents(owner, repo, dir, opt)
+	if err != nil {
+		return nil, err
+	}
+	for _, contents := range dirContents {
+		if *contents.Name == filename {
+			if contents.DownloadURL == nil || *contents.DownloadURL == "" {
+				return nil, fmt.Errorf("No download link found for %s", filepath)
+			}
+			resp, err := s.client.client.Get(*contents.DownloadURL)
+			if err != nil {
+				return nil, err
+			}
+			return resp.Body, nil
+		}
+	}
+	return nil, fmt.Errorf("No file named %s found in %s", filename, dir)
+}
+
+// GetContents can return either the metadata and content of a single file
+// (when path references a file) or the metadata of all the files and/or
+// subdirectories of a directory (when path references a directory). To make it
+// easy to distinguish between both result types and to mimic the API as much
+// as possible, both result types will be returned but only one will contain a
+// value and the other will be nil.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/contents/#get-contents
+func (s *RepositoriesService) GetContents(owner, repo, path string, opt *RepositoryContentGetOptions) (fileContent *RepositoryContent, directoryContent []*RepositoryContent, resp *Response, err error) {
+	escapedPath := (&url.URL{Path: path}).String()
+	u := fmt.Sprintf("repos/%s/%s/contents/%s", owner, repo, escapedPath)
+	u, err = addOptions(u, opt)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	var rawJSON json.RawMessage
+	resp, err = s.client.Do(req, &rawJSON)
+	if err != nil {
+		return nil, nil, resp, err
+	}
+	fileUnmarshalError := json.Unmarshal(rawJSON, &fileContent)
+	if fileUnmarshalError == nil {
+		return fileContent, nil, resp, fileUnmarshalError
+	}
+	directoryUnmarshalError := json.Unmarshal(rawJSON, &directoryContent)
+	if directoryUnmarshalError == nil {
+		return nil, directoryContent, resp, directoryUnmarshalError
+	}
+	return nil, nil, resp, fmt.Errorf("unmarshalling failed for both file and directory content: %s and %s ", fileUnmarshalError, directoryUnmarshalError)
+}
+
+// CreateFile creates a new file in a repository at the given path and returns
+// the commit and file metadata.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/contents/#create-a-file
+func (s *RepositoriesService) CreateFile(owner, repo, path string, opt *RepositoryContentFileOptions) (*RepositoryContentResponse, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/contents/%s", owner, repo, path)
+	req, err := s.client.NewRequest("PUT", u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+	createResponse := new(RepositoryContentResponse)
+	resp, err := s.client.Do(req, createResponse)
+	if err != nil {
+		return nil, resp, err
+	}
+	return createResponse, resp, err
+}
+
+// UpdateFile updates a file in a repository at the given path and returns the
+// commit and file metadata. Requires the blob SHA of the file being updated.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/contents/#update-a-file
+func (s *RepositoriesService) UpdateFile(owner, repo, path string, opt *RepositoryContentFileOptions) (*RepositoryContentResponse, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/contents/%s", owner, repo, path)
+	req, err := s.client.NewRequest("PUT", u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+	updateResponse := new(RepositoryContentResponse)
+	resp, err := s.client.Do(req, updateResponse)
+	if err != nil {
+		return nil, resp, err
+	}
+	return updateResponse, resp, err
+}
+
+// DeleteFile deletes a file from a repository and returns the commit.
+// Requires the blob SHA of the file to be deleted.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/contents/#delete-a-file
+func (s *RepositoriesService) DeleteFile(owner, repo, path string, opt *RepositoryContentFileOptions) (*RepositoryContentResponse, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/contents/%s", owner, repo, path)
+	req, err := s.client.NewRequest("DELETE", u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+	deleteResponse := new(RepositoryContentResponse)
+	resp, err := s.client.Do(req, deleteResponse)
+	if err != nil {
+		return nil, resp, err
+	}
+	return deleteResponse, resp, err
+}
+
+// archiveFormat is used to define the archive type when calling GetArchiveLink.
+type archiveFormat string
+
+const (
+	// Tarball specifies an archive in gzipped tar format.
+	Tarball archiveFormat = "tarball"
+
+	// Zipball specifies an archive in zip format.
+	Zipball archiveFormat = "zipball"
+)
+
+// GetArchiveLink returns an URL to download a tarball or zipball archive for a
+// repository. The archiveFormat can be specified by either the github.Tarball
+// or github.Zipball constant.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/contents/#get-archive-link
+func (s *RepositoriesService) GetArchiveLink(owner, repo string, archiveformat archiveFormat, opt *RepositoryContentGetOptions) (*url.URL, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/%s", owner, repo, archiveformat)
+	if opt != nil && opt.Ref != "" {
+		u += fmt.Sprintf("/%s", opt.Ref)
+	}
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	var resp *http.Response
+	// Use http.DefaultTransport if no custom Transport is configured
+	if s.client.client.Transport == nil {
+		resp, err = http.DefaultTransport.RoundTrip(req)
+	} else {
+		resp, err = s.client.client.Transport.RoundTrip(req)
+	}
+	if err != nil || resp.StatusCode != http.StatusFound {
+		return nil, newResponse(resp), err
+	}
+	parsedURL, err := url.Parse(resp.Header.Get("Location"))
+	return parsedURL, newResponse(resp), err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_deployments.go b/vendor/github.com/google/go-github/github/repos_deployments.go
new file mode 100644
index 0000000..214b713
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_deployments.go
@@ -0,0 +1,179 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// Deployment represents a deployment in a repo
+type Deployment struct {
+	URL           *string         `json:"url,omitempty"`
+	ID            *int            `json:"id,omitempty"`
+	SHA           *string         `json:"sha,omitempty"`
+	Ref           *string         `json:"ref,omitempty"`
+	Task          *string         `json:"task,omitempty"`
+	Payload       json.RawMessage `json:"payload,omitempty"`
+	Environment   *string         `json:"environment,omitempty"`
+	Description   *string         `json:"description,omitempty"`
+	Creator       *User           `json:"creator,omitempty"`
+	CreatedAt     *Timestamp      `json:"created_at,omitempty"`
+	UpdatedAt     *Timestamp      `json:"pushed_at,omitempty"`
+	StatusesURL   *string         `json:"statuses_url,omitempty"`
+	RepositoryURL *string         `json:"repository_url,omitempty"`
+}
+
+// DeploymentRequest represents a deployment request
+type DeploymentRequest struct {
+	Ref                   *string   `json:"ref,omitempty"`
+	Task                  *string   `json:"task,omitempty"`
+	AutoMerge             *bool     `json:"auto_merge,omitempty"`
+	RequiredContexts      *[]string `json:"required_contexts,omitempty"`
+	Payload               *string   `json:"payload,omitempty"`
+	Environment           *string   `json:"environment,omitempty"`
+	Description           *string   `json:"description,omitempty"`
+	TransientEnvironment  *bool     `json:"transient_environment,omitempty"`
+	ProductionEnvironment *bool     `json:"production_environment,omitempty"`
+}
+
+// DeploymentsListOptions specifies the optional parameters to the
+// RepositoriesService.ListDeployments method.
+type DeploymentsListOptions struct {
+	// SHA of the Deployment.
+	SHA string `url:"sha,omitempty"`
+
+	// List deployments for a given ref.
+	Ref string `url:"ref,omitempty"`
+
+	// List deployments for a given task.
+	Task string `url:"task,omitempty"`
+
+	// List deployments for a given environment.
+	Environment string `url:"environment,omitempty"`
+
+	ListOptions
+}
+
+// ListDeployments lists the deployments of a repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/deployments/#list-deployments
+func (s *RepositoriesService) ListDeployments(owner, repo string, opt *DeploymentsListOptions) ([]Deployment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/deployments", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	deployments := new([]Deployment)
+	resp, err := s.client.Do(req, deployments)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *deployments, resp, err
+}
+
+// CreateDeployment creates a new deployment for a repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/deployments/#create-a-deployment
+func (s *RepositoriesService) CreateDeployment(owner, repo string, request *DeploymentRequest) (*Deployment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/deployments", owner, repo)
+
+	req, err := s.client.NewRequest("POST", u, request)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when deployment support fully launches
+	req.Header.Set("Accept", mediaTypeDeploymentStatusPreview)
+
+	d := new(Deployment)
+	resp, err := s.client.Do(req, d)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return d, resp, err
+}
+
+// DeploymentStatus represents the status of a
+// particular deployment.
+type DeploymentStatus struct {
+	ID *int `json:"id,omitempty"`
+	// State is the deployment state.
+	// Possible values are: "pending", "success", "failure", "error", "inactive".
+	State         *string    `json:"state,omitempty"`
+	Creator       *User      `json:"creator,omitempty"`
+	Description   *string    `json:"description,omitempty"`
+	TargetURL     *string    `json:"target_url,omitempty"`
+	CreatedAt     *Timestamp `json:"created_at,omitempty"`
+	UpdatedAt     *Timestamp `json:"pushed_at,omitempty"`
+	DeploymentURL *string    `json:"deployment_url,omitempty"`
+	RepositoryURL *string    `json:"repository_url,omitempty"`
+}
+
+// DeploymentStatusRequest represents a deployment request
+type DeploymentStatusRequest struct {
+	State          *string `json:"state,omitempty"`
+	TargetURL      *string `json:"target_url,omitempty"` // Deprecated. Use LogURL instead.
+	LogURL         *string `json:"log_url,omitempty"`
+	Description    *string `json:"description,omitempty"`
+	EnvironmentURL *string `json:"environment_url,omitempty"`
+	AutoInactive   *bool   `json:"auto_inactive,omitempty"`
+}
+
+// ListDeploymentStatuses lists the statuses of a given deployment of a repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/deployments/#list-deployment-statuses
+func (s *RepositoriesService) ListDeploymentStatuses(owner, repo string, deployment int, opt *ListOptions) ([]DeploymentStatus, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/deployments/%v/statuses", owner, repo, deployment)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	statuses := new([]DeploymentStatus)
+	resp, err := s.client.Do(req, statuses)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *statuses, resp, err
+}
+
+// CreateDeploymentStatus creates a new status for a deployment.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/deployments/#create-a-deployment-status
+func (s *RepositoriesService) CreateDeploymentStatus(owner, repo string, deployment int, request *DeploymentStatusRequest) (*DeploymentStatus, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/deployments/%v/statuses", owner, repo, deployment)
+
+	req, err := s.client.NewRequest("POST", u, request)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: remove custom Accept header when deployment support fully launches
+	req.Header.Set("Accept", mediaTypeDeploymentStatusPreview)
+
+	d := new(DeploymentStatus)
+	resp, err := s.client.Do(req, d)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return d, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_forks.go b/vendor/github.com/google/go-github/github/repos_forks.go
new file mode 100644
index 0000000..1fec829
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_forks.go
@@ -0,0 +1,73 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// RepositoryListForksOptions specifies the optional parameters to the
+// RepositoriesService.ListForks method.
+type RepositoryListForksOptions struct {
+	// How to sort the forks list.  Possible values are: newest, oldest,
+	// watchers.  Default is "newest".
+	Sort string `url:"sort,omitempty"`
+
+	ListOptions
+}
+
+// ListForks lists the forks of the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/forks/#list-forks
+func (s *RepositoriesService) ListForks(owner, repo string, opt *RepositoryListForksOptions) ([]Repository, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/forks", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	repos := new([]Repository)
+	resp, err := s.client.Do(req, repos)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *repos, resp, err
+}
+
+// RepositoryCreateForkOptions specifies the optional parameters to the
+// RepositoriesService.CreateFork method.
+type RepositoryCreateForkOptions struct {
+	// The organization to fork the repository into.
+	Organization string `url:"organization,omitempty"`
+}
+
+// CreateFork creates a fork of the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/forks/#list-forks
+func (s *RepositoriesService) CreateFork(owner, repo string, opt *RepositoryCreateForkOptions) (*Repository, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/forks", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("POST", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	fork := new(Repository)
+	resp, err := s.client.Do(req, fork)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return fork, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_hooks.go b/vendor/github.com/google/go-github/github/repos_hooks.go
new file mode 100644
index 0000000..4370c16
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_hooks.go
@@ -0,0 +1,196 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// WebHookPayload represents the data that is received from GitHub when a push
+// event hook is triggered.  The format of these payloads pre-date most of the
+// GitHub v3 API, so there are lots of minor incompatibilities with the types
+// defined in the rest of the API.  Therefore, several types are duplicated
+// here to account for these differences.
+//
+// GitHub API docs: https://help.github.com/articles/post-receive-hooks
+type WebHookPayload struct {
+	After      *string         `json:"after,omitempty"`
+	Before     *string         `json:"before,omitempty"`
+	Commits    []WebHookCommit `json:"commits,omitempty"`
+	Compare    *string         `json:"compare,omitempty"`
+	Created    *bool           `json:"created,omitempty"`
+	Deleted    *bool           `json:"deleted,omitempty"`
+	Forced     *bool           `json:"forced,omitempty"`
+	HeadCommit *WebHookCommit  `json:"head_commit,omitempty"`
+	Pusher     *User           `json:"pusher,omitempty"`
+	Ref        *string         `json:"ref,omitempty"`
+	Repo       *Repository     `json:"repository,omitempty"`
+	Sender     *User           `json:"sender,omitempty"`
+}
+
+func (w WebHookPayload) String() string {
+	return Stringify(w)
+}
+
+// WebHookCommit represents the commit variant we receive from GitHub in a
+// WebHookPayload.
+type WebHookCommit struct {
+	Added     []string       `json:"added,omitempty"`
+	Author    *WebHookAuthor `json:"author,omitempty"`
+	Committer *WebHookAuthor `json:"committer,omitempty"`
+	Distinct  *bool          `json:"distinct,omitempty"`
+	ID        *string        `json:"id,omitempty"`
+	Message   *string        `json:"message,omitempty"`
+	Modified  []string       `json:"modified,omitempty"`
+	Removed   []string       `json:"removed,omitempty"`
+	Timestamp *time.Time     `json:"timestamp,omitempty"`
+}
+
+func (w WebHookCommit) String() string {
+	return Stringify(w)
+}
+
+// WebHookAuthor represents the author or committer of a commit, as specified
+// in a WebHookCommit.  The commit author may not correspond to a GitHub User.
+type WebHookAuthor struct {
+	Email    *string `json:"email,omitempty"`
+	Name     *string `json:"name,omitempty"`
+	Username *string `json:"username,omitempty"`
+}
+
+func (w WebHookAuthor) String() string {
+	return Stringify(w)
+}
+
+// Hook represents a GitHub (web and service) hook for a repository.
+type Hook struct {
+	CreatedAt *time.Time             `json:"created_at,omitempty"`
+	UpdatedAt *time.Time             `json:"updated_at,omitempty"`
+	Name      *string                `json:"name,omitempty"`
+	URL       *string                `json:"url,omitempty"`
+	Events    []string               `json:"events,omitempty"`
+	Active    *bool                  `json:"active,omitempty"`
+	Config    map[string]interface{} `json:"config,omitempty"`
+	ID        *int                   `json:"id,omitempty"`
+}
+
+func (h Hook) String() string {
+	return Stringify(h)
+}
+
+// CreateHook creates a Hook for the specified repository.
+// Name and Config are required fields.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/hooks/#create-a-hook
+func (s *RepositoriesService) CreateHook(owner, repo string, hook *Hook) (*Hook, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/hooks", owner, repo)
+	req, err := s.client.NewRequest("POST", u, hook)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	h := new(Hook)
+	resp, err := s.client.Do(req, h)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return h, resp, err
+}
+
+// ListHooks lists all Hooks for the specified repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/hooks/#list
+func (s *RepositoriesService) ListHooks(owner, repo string, opt *ListOptions) ([]Hook, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/hooks", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	hooks := new([]Hook)
+	resp, err := s.client.Do(req, hooks)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *hooks, resp, err
+}
+
+// GetHook returns a single specified Hook.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/hooks/#get-single-hook
+func (s *RepositoriesService) GetHook(owner, repo string, id int) (*Hook, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/hooks/%d", owner, repo, id)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	hook := new(Hook)
+	resp, err := s.client.Do(req, hook)
+	return hook, resp, err
+}
+
+// EditHook updates a specified Hook.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/hooks/#edit-a-hook
+func (s *RepositoriesService) EditHook(owner, repo string, id int, hook *Hook) (*Hook, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/hooks/%d", owner, repo, id)
+	req, err := s.client.NewRequest("PATCH", u, hook)
+	if err != nil {
+		return nil, nil, err
+	}
+	h := new(Hook)
+	resp, err := s.client.Do(req, h)
+	return h, resp, err
+}
+
+// DeleteHook deletes a specified Hook.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/hooks/#delete-a-hook
+func (s *RepositoriesService) DeleteHook(owner, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/hooks/%d", owner, repo, id)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// PingHook triggers a 'ping' event to be sent to the Hook.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/hooks/#ping-a-hook
+func (s *RepositoriesService) PingHook(owner, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/hooks/%d/pings", owner, repo, id)
+	req, err := s.client.NewRequest("POST", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// TestHook triggers a test Hook by github.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/hooks/#test-a-push-hook
+func (s *RepositoriesService) TestHook(owner, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/hooks/%d/tests", owner, repo, id)
+	req, err := s.client.NewRequest("POST", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// ListServiceHooks is deprecated.  Use Client.ListServiceHooks instead.
+func (s *RepositoriesService) ListServiceHooks() ([]ServiceHook, *Response, error) {
+	return s.client.ListServiceHooks()
+}
diff --git a/vendor/github.com/google/go-github/github/repos_keys.go b/vendor/github.com/google/go-github/github/repos_keys.go
new file mode 100644
index 0000000..0d12ec9
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_keys.go
@@ -0,0 +1,108 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// The Key type is defined in users_keys.go
+
+// ListKeys lists the deploy keys for a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/keys/#list
+func (s *RepositoriesService) ListKeys(owner string, repo string, opt *ListOptions) ([]Key, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/keys", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	keys := new([]Key)
+	resp, err := s.client.Do(req, keys)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *keys, resp, err
+}
+
+// GetKey fetches a single deploy key.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/keys/#get
+func (s *RepositoriesService) GetKey(owner string, repo string, id int) (*Key, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/keys/%v", owner, repo, id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	key := new(Key)
+	resp, err := s.client.Do(req, key)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return key, resp, err
+}
+
+// CreateKey adds a deploy key for a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/keys/#create
+func (s *RepositoriesService) CreateKey(owner string, repo string, key *Key) (*Key, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/keys", owner, repo)
+
+	req, err := s.client.NewRequest("POST", u, key)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	k := new(Key)
+	resp, err := s.client.Do(req, k)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return k, resp, err
+}
+
+// EditKey edits a deploy key.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/keys/#edit
+func (s *RepositoriesService) EditKey(owner string, repo string, id int, key *Key) (*Key, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/keys/%v", owner, repo, id)
+
+	req, err := s.client.NewRequest("PATCH", u, key)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	k := new(Key)
+	resp, err := s.client.Do(req, k)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return k, resp, err
+}
+
+// DeleteKey deletes a deploy key.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/keys/#delete
+func (s *RepositoriesService) DeleteKey(owner string, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/keys/%v", owner, repo, id)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/repos_merging.go b/vendor/github.com/google/go-github/github/repos_merging.go
new file mode 100644
index 0000000..31f8313
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_merging.go
@@ -0,0 +1,37 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+)
+
+// RepositoryMergeRequest represents a request to merge a branch in a
+// repository.
+type RepositoryMergeRequest struct {
+	Base          *string `json:"base,omitempty"`
+	Head          *string `json:"head,omitempty"`
+	CommitMessage *string `json:"commit_message,omitempty"`
+}
+
+// Merge a branch in the specified repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/merging/#perform-a-merge
+func (s *RepositoriesService) Merge(owner, repo string, request *RepositoryMergeRequest) (*RepositoryCommit, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/merges", owner, repo)
+	req, err := s.client.NewRequest("POST", u, request)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	commit := new(RepositoryCommit)
+	resp, err := s.client.Do(req, commit)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return commit, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_pages.go b/vendor/github.com/google/go-github/github/repos_pages.go
new file mode 100644
index 0000000..2384eaf
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_pages.go
@@ -0,0 +1,90 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Pages represents a GitHub Pages site configuration.
+type Pages struct {
+	URL       *string `json:"url,omitempty"`
+	Status    *string `json:"status,omitempty"`
+	CNAME     *string `json:"cname,omitempty"`
+	Custom404 *bool   `json:"custom_404,omitempty"`
+}
+
+// PagesError represents a build error for a GitHub Pages site.
+type PagesError struct {
+	Message *string `json:"message,omitempty"`
+}
+
+// PagesBuild represents the build information for a GitHub Pages site.
+type PagesBuild struct {
+	URL       *string     `json:"url,omitempty"`
+	Status    *string     `json:"status,omitempty"`
+	Error     *PagesError `json:"error,omitempty"`
+	Pusher    *User       `json:"pusher,omitempty"`
+	Commit    *string     `json:"commit,omitempty"`
+	Duration  *int        `json:"duration,omitempty"`
+	CreatedAt *Timestamp  `json:"created_at,omitempty"`
+	UpdatedAt *Timestamp  `json:"created_at,omitempty"`
+}
+
+// GetPagesInfo fetches information about a GitHub Pages site.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/pages/#get-information-about-a-pages-site
+func (s *RepositoriesService) GetPagesInfo(owner string, repo string) (*Pages, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pages", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	site := new(Pages)
+	resp, err := s.client.Do(req, site)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return site, resp, err
+}
+
+// ListPagesBuilds lists the builds for a GitHub Pages site.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/pages/#list-pages-builds
+func (s *RepositoriesService) ListPagesBuilds(owner string, repo string) ([]PagesBuild, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pages/builds", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var pages []PagesBuild
+	resp, err := s.client.Do(req, &pages)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return pages, resp, err
+}
+
+// GetLatestPagesBuild fetches the latest build information for a GitHub pages site.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/pages/#list-latest-pages-build
+func (s *RepositoriesService) GetLatestPagesBuild(owner string, repo string) (*PagesBuild, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/pages/builds/latest", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	build := new(PagesBuild)
+	resp, err := s.client.Do(req, build)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return build, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_releases.go b/vendor/github.com/google/go-github/github/repos_releases.go
new file mode 100644
index 0000000..37e356a
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_releases.go
@@ -0,0 +1,325 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"mime"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// RepositoryRelease represents a GitHub release in a repository.
+type RepositoryRelease struct {
+	ID              *int           `json:"id,omitempty"`
+	TagName         *string        `json:"tag_name,omitempty"`
+	TargetCommitish *string        `json:"target_commitish,omitempty"`
+	Name            *string        `json:"name,omitempty"`
+	Body            *string        `json:"body,omitempty"`
+	Draft           *bool          `json:"draft,omitempty"`
+	Prerelease      *bool          `json:"prerelease,omitempty"`
+	CreatedAt       *Timestamp     `json:"created_at,omitempty"`
+	PublishedAt     *Timestamp     `json:"published_at,omitempty"`
+	URL             *string        `json:"url,omitempty"`
+	HTMLURL         *string        `json:"html_url,omitempty"`
+	AssetsURL       *string        `json:"assets_url,omitempty"`
+	Assets          []ReleaseAsset `json:"assets,omitempty"`
+	UploadURL       *string        `json:"upload_url,omitempty"`
+	ZipballURL      *string        `json:"zipball_url,omitempty"`
+	TarballURL      *string        `json:"tarball_url,omitempty"`
+	Author          *CommitAuthor  `json:"author,omitempty"`
+}
+
+func (r RepositoryRelease) String() string {
+	return Stringify(r)
+}
+
+// ReleaseAsset represents a Github release asset in a repository.
+type ReleaseAsset struct {
+	ID                 *int       `json:"id,omitempty"`
+	URL                *string    `json:"url,omitempty"`
+	Name               *string    `json:"name,omitempty"`
+	Label              *string    `json:"label,omitempty"`
+	State              *string    `json:"state,omitempty"`
+	ContentType        *string    `json:"content_type,omitempty"`
+	Size               *int       `json:"size,omitempty"`
+	DownloadCount      *int       `json:"download_count,omitempty"`
+	CreatedAt          *Timestamp `json:"created_at,omitempty"`
+	UpdatedAt          *Timestamp `json:"updated_at,omitempty"`
+	BrowserDownloadURL *string    `json:"browser_download_url,omitempty"`
+	Uploader           *User      `json:"uploader,omitempty"`
+}
+
+func (r ReleaseAsset) String() string {
+	return Stringify(r)
+}
+
+// ListReleases lists the releases for a repository.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/releases/#list-releases-for-a-repository
+func (s *RepositoriesService) ListReleases(owner, repo string, opt *ListOptions) ([]RepositoryRelease, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases", owner, repo)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	releases := new([]RepositoryRelease)
+	resp, err := s.client.Do(req, releases)
+	if err != nil {
+		return nil, resp, err
+	}
+	return *releases, resp, err
+}
+
+// GetRelease fetches a single release.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/releases/#get-a-single-release
+func (s *RepositoriesService) GetRelease(owner, repo string, id int) (*RepositoryRelease, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/%d", owner, repo, id)
+	return s.getSingleRelease(u)
+}
+
+// GetLatestRelease fetches the latest published release for the repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/releases/#get-the-latest-release
+func (s *RepositoriesService) GetLatestRelease(owner, repo string) (*RepositoryRelease, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/latest", owner, repo)
+	return s.getSingleRelease(u)
+}
+
+// GetReleaseByTag fetches a release with the specified tag.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/releases/#get-a-release-by-tag-name
+func (s *RepositoriesService) GetReleaseByTag(owner, repo, tag string) (*RepositoryRelease, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/tags/%s", owner, repo, tag)
+	return s.getSingleRelease(u)
+}
+
+func (s *RepositoriesService) getSingleRelease(url string) (*RepositoryRelease, *Response, error) {
+	req, err := s.client.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	release := new(RepositoryRelease)
+	resp, err := s.client.Do(req, release)
+	if err != nil {
+		return nil, resp, err
+	}
+	return release, resp, err
+}
+
+// CreateRelease adds a new release for a repository.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#create-a-release
+func (s *RepositoriesService) CreateRelease(owner, repo string, release *RepositoryRelease) (*RepositoryRelease, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases", owner, repo)
+
+	req, err := s.client.NewRequest("POST", u, release)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := new(RepositoryRelease)
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+	return r, resp, err
+}
+
+// EditRelease edits a repository release.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#edit-a-release
+func (s *RepositoriesService) EditRelease(owner, repo string, id int, release *RepositoryRelease) (*RepositoryRelease, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/%d", owner, repo, id)
+
+	req, err := s.client.NewRequest("PATCH", u, release)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	r := new(RepositoryRelease)
+	resp, err := s.client.Do(req, r)
+	if err != nil {
+		return nil, resp, err
+	}
+	return r, resp, err
+}
+
+// DeleteRelease delete a single release from a repository.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#delete-a-release
+func (s *RepositoriesService) DeleteRelease(owner, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/%d", owner, repo, id)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// ListReleaseAssets lists the release's assets.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#list-assets-for-a-release
+func (s *RepositoriesService) ListReleaseAssets(owner, repo string, id int, opt *ListOptions) ([]ReleaseAsset, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/%d/assets", owner, repo, id)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	assets := new([]ReleaseAsset)
+	resp, err := s.client.Do(req, assets)
+	if err != nil {
+		return nil, resp, nil
+	}
+	return *assets, resp, err
+}
+
+// GetReleaseAsset fetches a single release asset.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#get-a-single-release-asset
+func (s *RepositoriesService) GetReleaseAsset(owner, repo string, id int) (*ReleaseAsset, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/assets/%d", owner, repo, id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	asset := new(ReleaseAsset)
+	resp, err := s.client.Do(req, asset)
+	if err != nil {
+		return nil, resp, nil
+	}
+	return asset, resp, err
+}
+
+// DownloadReleaseAsset downloads a release asset or returns a redirect URL.
+//
+// DownloadReleaseAsset returns an io.ReadCloser that reads the contents of the
+// specified release asset. It is the caller's responsibility to close the ReadCloser.
+// If a redirect is returned, the redirect URL will be returned as a string instead
+// of the io.ReadCloser. Exactly one of rc and redirectURL will be zero.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#get-a-single-release-asset
+func (s *RepositoriesService) DownloadReleaseAsset(owner, repo string, id int) (rc io.ReadCloser, redirectURL string, err error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/assets/%d", owner, repo, id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, "", err
+	}
+	req.Header.Set("Accept", defaultMediaType)
+
+	s.client.clientMu.Lock()
+	defer s.client.clientMu.Unlock()
+
+	var loc string
+	saveRedirect := s.client.client.CheckRedirect
+	s.client.client.CheckRedirect = func(req *http.Request, via []*http.Request) error {
+		loc = req.URL.String()
+		return errors.New("disable redirect")
+	}
+	defer func() { s.client.client.CheckRedirect = saveRedirect }()
+
+	resp, err := s.client.client.Do(req)
+	if err != nil {
+		if !strings.Contains(err.Error(), "disable redirect") {
+			return nil, "", err
+		}
+		return nil, loc, nil
+	}
+
+	if err := CheckResponse(resp); err != nil {
+		resp.Body.Close()
+		return nil, "", err
+	}
+
+	return resp.Body, "", nil
+}
+
+// EditReleaseAsset edits a repository release asset.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#edit-a-release-asset
+func (s *RepositoriesService) EditReleaseAsset(owner, repo string, id int, release *ReleaseAsset) (*ReleaseAsset, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/assets/%d", owner, repo, id)
+
+	req, err := s.client.NewRequest("PATCH", u, release)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	asset := new(ReleaseAsset)
+	resp, err := s.client.Do(req, asset)
+	if err != nil {
+		return nil, resp, err
+	}
+	return asset, resp, err
+}
+
+// DeleteReleaseAsset delete a single release asset from a repository.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#delete-a-release-asset
+func (s *RepositoriesService) DeleteReleaseAsset(owner, repo string, id int) (*Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/assets/%d", owner, repo, id)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	return s.client.Do(req, nil)
+}
+
+// UploadReleaseAsset creates an asset by uploading a file into a release repository.
+// To upload assets that cannot be represented by an os.File, call NewUploadRequest directly.
+//
+// GitHub API docs : http://developer.github.com/v3/repos/releases/#upload-a-release-asset
+func (s *RepositoriesService) UploadReleaseAsset(owner, repo string, id int, opt *UploadOptions, file *os.File) (*ReleaseAsset, *Response, error) {
+	u := fmt.Sprintf("repos/%s/%s/releases/%d/assets", owner, repo, id)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	stat, err := file.Stat()
+	if err != nil {
+		return nil, nil, err
+	}
+	if stat.IsDir() {
+		return nil, nil, errors.New("the asset to upload can't be a directory")
+	}
+
+	mediaType := mime.TypeByExtension(filepath.Ext(file.Name()))
+	req, err := s.client.NewUploadRequest(u, file, stat.Size(), mediaType)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	asset := new(ReleaseAsset)
+	resp, err := s.client.Do(req, asset)
+	if err != nil {
+		return nil, resp, err
+	}
+	return asset, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_stats.go b/vendor/github.com/google/go-github/github/repos_stats.go
new file mode 100644
index 0000000..3474b55
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_stats.go
@@ -0,0 +1,214 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// ContributorStats represents a contributor to a repository and their
+// weekly contributions to a given repo.
+type ContributorStats struct {
+	Author *Contributor  `json:"author,omitempty"`
+	Total  *int          `json:"total,omitempty"`
+	Weeks  []WeeklyStats `json:"weeks,omitempty"`
+}
+
+func (c ContributorStats) String() string {
+	return Stringify(c)
+}
+
+// WeeklyStats represents the number of additions, deletions and commits
+// a Contributor made in a given week.
+type WeeklyStats struct {
+	Week      *Timestamp `json:"w,omitempty"`
+	Additions *int       `json:"a,omitempty"`
+	Deletions *int       `json:"d,omitempty"`
+	Commits   *int       `json:"c,omitempty"`
+}
+
+func (w WeeklyStats) String() string {
+	return Stringify(w)
+}
+
+// ListContributorsStats gets a repo's contributor list with additions,
+// deletions and commit counts.
+//
+// If this is the first time these statistics are requested for the given
+// repository, this method will return a non-nil error and a status code of
+// 202. This is because this is the status that github returns to signify that
+// it is now computing the requested statistics. A follow up request, after a
+// delay of a second or so, should result in a successful request.
+//
+// GitHub API Docs: https://developer.github.com/v3/repos/statistics/#contributors
+func (s *RepositoriesService) ListContributorsStats(owner, repo string) ([]ContributorStats, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/stats/contributors", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var contributorStats []ContributorStats
+	resp, err := s.client.Do(req, &contributorStats)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return contributorStats, resp, err
+}
+
+// WeeklyCommitActivity represents the weekly commit activity for a repository.
+// The days array is a group of commits per day, starting on Sunday.
+type WeeklyCommitActivity struct {
+	Days  []int      `json:"days,omitempty"`
+	Total *int       `json:"total,omitempty"`
+	Week  *Timestamp `json:"week,omitempty"`
+}
+
+func (w WeeklyCommitActivity) String() string {
+	return Stringify(w)
+}
+
+// ListCommitActivity returns the last year of commit activity
+// grouped by week. The days array is a group of commits per day,
+// starting on Sunday.
+//
+// If this is the first time these statistics are requested for the given
+// repository, this method will return a non-nil error and a status code of
+// 202. This is because this is the status that github returns to signify that
+// it is now computing the requested statistics. A follow up request, after a
+// delay of a second or so, should result in a successful request.
+//
+// GitHub API Docs: https://developer.github.com/v3/repos/statistics/#commit-activity
+func (s *RepositoriesService) ListCommitActivity(owner, repo string) ([]WeeklyCommitActivity, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/stats/commit_activity", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var weeklyCommitActivity []WeeklyCommitActivity
+	resp, err := s.client.Do(req, &weeklyCommitActivity)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return weeklyCommitActivity, resp, err
+}
+
+// ListCodeFrequency returns a weekly aggregate of the number of additions and
+// deletions pushed to a repository.  Returned WeeklyStats will contain
+// additions and deletions, but not total commits.
+//
+// GitHub API Docs: https://developer.github.com/v3/repos/statistics/#code-frequency
+func (s *RepositoriesService) ListCodeFrequency(owner, repo string) ([]WeeklyStats, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/stats/code_frequency", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var weeks [][]int
+	resp, err := s.client.Do(req, &weeks)
+
+	// convert int slices into WeeklyStats
+	var stats []WeeklyStats
+	for _, week := range weeks {
+		if len(week) != 3 {
+			continue
+		}
+		stat := WeeklyStats{
+			Week:      &Timestamp{time.Unix(int64(week[0]), 0)},
+			Additions: Int(week[1]),
+			Deletions: Int(week[2]),
+		}
+		stats = append(stats, stat)
+	}
+
+	return stats, resp, err
+}
+
+// RepositoryParticipation is the number of commits by everyone
+// who has contributed to the repository (including the owner)
+// as well as the number of commits by the owner themself.
+type RepositoryParticipation struct {
+	All   []int `json:"all,omitempty"`
+	Owner []int `json:"owner,omitempty"`
+}
+
+func (r RepositoryParticipation) String() string {
+	return Stringify(r)
+}
+
+// ListParticipation returns the total commit counts for the 'owner'
+// and total commit counts in 'all'. 'all' is everyone combined,
+// including the 'owner' in the last 52 weeks. If you’d like to get
+// the commit counts for non-owners, you can subtract 'all' from 'owner'.
+//
+// The array order is oldest week (index 0) to most recent week.
+//
+// If this is the first time these statistics are requested for the given
+// repository, this method will return a non-nil error and a status code
+// of 202. This is because this is the status that github returns to
+// signify that it is now computing the requested statistics. A follow
+// up request, after a delay of a second or so, should result in a
+// successful request.
+//
+// GitHub API Docs: https://developer.github.com/v3/repos/statistics/#participation
+func (s *RepositoriesService) ListParticipation(owner, repo string) (*RepositoryParticipation, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/stats/participation", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	participation := new(RepositoryParticipation)
+	resp, err := s.client.Do(req, participation)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return participation, resp, err
+}
+
+// PunchCard represents the number of commits made during a given hour of a
+// day of thew eek.
+type PunchCard struct {
+	Day     *int // Day of the week (0-6: =Sunday - Saturday).
+	Hour    *int // Hour of day (0-23).
+	Commits *int // Number of commits.
+}
+
+// ListPunchCard returns the number of commits per hour in each day.
+//
+// GitHub API Docs: https://developer.github.com/v3/repos/statistics/#punch-card
+func (s *RepositoriesService) ListPunchCard(owner, repo string) ([]PunchCard, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/stats/punch_card", owner, repo)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var results [][]int
+	resp, err := s.client.Do(req, &results)
+
+	// convert int slices into Punchcards
+	var cards []PunchCard
+	for _, result := range results {
+		if len(result) != 3 {
+			continue
+		}
+		card := PunchCard{
+			Day:     Int(result[0]),
+			Hour:    Int(result[1]),
+			Commits: Int(result[2]),
+		}
+		cards = append(cards, card)
+	}
+
+	return cards, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/repos_statuses.go b/vendor/github.com/google/go-github/github/repos_statuses.go
new file mode 100644
index 0000000..7a6ee7c
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/repos_statuses.go
@@ -0,0 +1,128 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+	"time"
+)
+
+// RepoStatus represents the status of a repository at a particular reference.
+type RepoStatus struct {
+	ID  *int    `json:"id,omitempty"`
+	URL *string `json:"url,omitempty"`
+
+	// State is the current state of the repository.  Possible values are:
+	// pending, success, error, or failure.
+	State *string `json:"state,omitempty"`
+
+	// TargetURL is the URL of the page representing this status.  It will be
+	// linked from the GitHub UI to allow users to see the source of the status.
+	TargetURL *string `json:"target_url,omitempty"`
+
+	// Description is a short high level summary of the status.
+	Description *string `json:"description,omitempty"`
+
+	// A string label to differentiate this status from the statuses of other systems.
+	Context *string `json:"context,omitempty"`
+
+	Creator   *User      `json:"creator,omitempty"`
+	CreatedAt *time.Time `json:"created_at,omitempty"`
+	UpdatedAt *time.Time `json:"updated_at,omitempty"`
+}
+
+func (r RepoStatus) String() string {
+	return Stringify(r)
+}
+
+// ListStatuses lists the statuses of a repository at the specified
+// reference.  ref can be a SHA, a branch name, or a tag name.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/statuses/#list-statuses-for-a-specific-ref
+func (s *RepositoriesService) ListStatuses(owner, repo, ref string, opt *ListOptions) ([]RepoStatus, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/commits/%v/statuses", owner, repo, ref)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	statuses := new([]RepoStatus)
+	resp, err := s.client.Do(req, statuses)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *statuses, resp, err
+}
+
+// CreateStatus creates a new status for a repository at the specified
+// reference.  Ref can be a SHA, a branch name, or a tag name.
+//
+// GitHub API docs: http://developer.github.com/v3/repos/statuses/#create-a-status
+func (s *RepositoriesService) CreateStatus(owner, repo, ref string, status *RepoStatus) (*RepoStatus, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/statuses/%v", owner, repo, ref)
+	req, err := s.client.NewRequest("POST", u, status)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	repoStatus := new(RepoStatus)
+	resp, err := s.client.Do(req, repoStatus)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return repoStatus, resp, err
+}
+
+// CombinedStatus represents the combined status of a repository at a particular reference.
+type CombinedStatus struct {
+	// State is the combined state of the repository.  Possible values are:
+	// failure, pending, or success.
+	State *string `json:"state,omitempty"`
+
+	Name       *string      `json:"name,omitempty"`
+	SHA        *string      `json:"sha,omitempty"`
+	TotalCount *int         `json:"total_count,omitempty"`
+	Statuses   []RepoStatus `json:"statuses,omitempty"`
+
+	CommitURL     *string `json:"commit_url,omitempty"`
+	RepositoryURL *string `json:"repository_url,omitempty"`
+}
+
+func (s CombinedStatus) String() string {
+	return Stringify(s)
+}
+
+// GetCombinedStatus returns the combined status of a repository at the specified
+// reference.  ref can be a SHA, a branch name, or a tag name.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/statuses/#get-the-combined-status-for-a-specific-ref
+func (s *RepositoriesService) GetCombinedStatus(owner, repo, ref string, opt *ListOptions) (*CombinedStatus, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/commits/%v/status", owner, repo, ref)
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	status := new(CombinedStatus)
+	resp, err := s.client.Do(req, status)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return status, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/search.go b/vendor/github.com/google/go-github/github/search.go
new file mode 100644
index 0000000..073b6c0
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/search.go
@@ -0,0 +1,158 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+
+	qs "github.com/google/go-querystring/query"
+)
+
+// SearchService provides access to the search related functions
+// in the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/search/
+type SearchService struct {
+	client *Client
+}
+
+// SearchOptions specifies optional parameters to the SearchService methods.
+type SearchOptions struct {
+	// How to sort the search results.  Possible values are:
+	//   - for repositories: stars, fork, updated
+	//   - for code: indexed
+	//   - for issues: comments, created, updated
+	//   - for users: followers, repositories, joined
+	//
+	// Default is to sort by best match.
+	Sort string `url:"sort,omitempty"`
+
+	// Sort order if sort parameter is provided. Possible values are: asc,
+	// desc. Default is desc.
+	Order string `url:"order,omitempty"`
+
+	// Whether to retrieve text match metadata with a query
+	TextMatch bool `url:"-"`
+
+	ListOptions
+}
+
+// RepositoriesSearchResult represents the result of a repositories search.
+type RepositoriesSearchResult struct {
+	Total        *int         `json:"total_count,omitempty"`
+	Repositories []Repository `json:"items,omitempty"`
+}
+
+// Repositories searches repositories via various criteria.
+//
+// GitHub API docs: http://developer.github.com/v3/search/#search-repositories
+func (s *SearchService) Repositories(query string, opt *SearchOptions) (*RepositoriesSearchResult, *Response, error) {
+	result := new(RepositoriesSearchResult)
+	resp, err := s.search("repositories", query, opt, result)
+	return result, resp, err
+}
+
+// IssuesSearchResult represents the result of an issues search.
+type IssuesSearchResult struct {
+	Total  *int    `json:"total_count,omitempty"`
+	Issues []Issue `json:"items,omitempty"`
+}
+
+// Issues searches issues via various criteria.
+//
+// GitHub API docs: http://developer.github.com/v3/search/#search-issues
+func (s *SearchService) Issues(query string, opt *SearchOptions) (*IssuesSearchResult, *Response, error) {
+	result := new(IssuesSearchResult)
+	resp, err := s.search("issues", query, opt, result)
+	return result, resp, err
+}
+
+// UsersSearchResult represents the result of an issues search.
+type UsersSearchResult struct {
+	Total *int   `json:"total_count,omitempty"`
+	Users []User `json:"items,omitempty"`
+}
+
+// Users searches users via various criteria.
+//
+// GitHub API docs: http://developer.github.com/v3/search/#search-users
+func (s *SearchService) Users(query string, opt *SearchOptions) (*UsersSearchResult, *Response, error) {
+	result := new(UsersSearchResult)
+	resp, err := s.search("users", query, opt, result)
+	return result, resp, err
+}
+
+// Match represents a single text match.
+type Match struct {
+	Text    *string `json:"text,omitempty"`
+	Indices []int   `json:"indices,omitempty"`
+}
+
+// TextMatch represents a text match for a SearchResult
+type TextMatch struct {
+	ObjectURL  *string `json:"object_url,omitempty"`
+	ObjectType *string `json:"object_type,omitempty"`
+	Property   *string `json:"property,omitempty"`
+	Fragment   *string `json:"fragment,omitempty"`
+	Matches    []Match `json:"matches,omitempty"`
+}
+
+func (tm TextMatch) String() string {
+	return Stringify(tm)
+}
+
+// CodeSearchResult represents the result of an code search.
+type CodeSearchResult struct {
+	Total       *int         `json:"total_count,omitempty"`
+	CodeResults []CodeResult `json:"items,omitempty"`
+}
+
+// CodeResult represents a single search result.
+type CodeResult struct {
+	Name        *string     `json:"name,omitempty"`
+	Path        *string     `json:"path,omitempty"`
+	SHA         *string     `json:"sha,omitempty"`
+	HTMLURL     *string     `json:"html_url,omitempty"`
+	Repository  *Repository `json:"repository,omitempty"`
+	TextMatches []TextMatch `json:"text_matches,omitempty"`
+}
+
+func (c CodeResult) String() string {
+	return Stringify(c)
+}
+
+// Code searches code via various criteria.
+//
+// GitHub API docs: http://developer.github.com/v3/search/#search-code
+func (s *SearchService) Code(query string, opt *SearchOptions) (*CodeSearchResult, *Response, error) {
+	result := new(CodeSearchResult)
+	resp, err := s.search("code", query, opt, result)
+	return result, resp, err
+}
+
+// Helper function that executes search queries against different
+// GitHub search types (repositories, code, issues, users)
+func (s *SearchService) search(searchType string, query string, opt *SearchOptions, result interface{}) (*Response, error) {
+	params, err := qs.Values(opt)
+	if err != nil {
+		return nil, err
+	}
+	params.Add("q", query)
+	u := fmt.Sprintf("search/%s?%s", searchType, params.Encode())
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if opt != nil && opt.TextMatch {
+		// Accept header defaults to "application/vnd.github.v3+json"
+		// We change it here to fetch back text-match metadata
+		req.Header.Set("Accept", "application/vnd.github.v3.text-match+json")
+	}
+
+	return s.client.Do(req, result)
+}
diff --git a/vendor/github.com/google/go-github/github/strings.go b/vendor/github.com/google/go-github/github/strings.go
new file mode 100644
index 0000000..3857723
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/strings.go
@@ -0,0 +1,93 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+
+	"reflect"
+)
+
+var timestampType = reflect.TypeOf(Timestamp{})
+
+// Stringify attempts to create a reasonable string representation of types in
+// the GitHub library.  It does things like resolve pointers to their values
+// and omits struct fields with nil values.
+func Stringify(message interface{}) string {
+	var buf bytes.Buffer
+	v := reflect.ValueOf(message)
+	stringifyValue(&buf, v)
+	return buf.String()
+}
+
+// stringifyValue was heavily inspired by the goprotobuf library.
+
+func stringifyValue(w io.Writer, val reflect.Value) {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		w.Write([]byte("<nil>"))
+		return
+	}
+
+	v := reflect.Indirect(val)
+
+	switch v.Kind() {
+	case reflect.String:
+		fmt.Fprintf(w, `"%s"`, v)
+	case reflect.Slice:
+		w.Write([]byte{'['})
+		for i := 0; i < v.Len(); i++ {
+			if i > 0 {
+				w.Write([]byte{' '})
+			}
+
+			stringifyValue(w, v.Index(i))
+		}
+
+		w.Write([]byte{']'})
+		return
+	case reflect.Struct:
+		if v.Type().Name() != "" {
+			w.Write([]byte(v.Type().String()))
+		}
+
+		// special handling of Timestamp values
+		if v.Type() == timestampType {
+			fmt.Fprintf(w, "{%s}", v.Interface())
+			return
+		}
+
+		w.Write([]byte{'{'})
+
+		var sep bool
+		for i := 0; i < v.NumField(); i++ {
+			fv := v.Field(i)
+			if fv.Kind() == reflect.Ptr && fv.IsNil() {
+				continue
+			}
+			if fv.Kind() == reflect.Slice && fv.IsNil() {
+				continue
+			}
+
+			if sep {
+				w.Write([]byte(", "))
+			} else {
+				sep = true
+			}
+
+			w.Write([]byte(v.Type().Field(i).Name))
+			w.Write([]byte{':'})
+			stringifyValue(w, fv)
+		}
+
+		w.Write([]byte{'}'})
+	default:
+		if v.CanInterface() {
+			fmt.Fprint(w, v.Interface())
+		}
+	}
+}
diff --git a/vendor/github.com/google/go-github/github/timestamp.go b/vendor/github.com/google/go-github/github/timestamp.go
new file mode 100644
index 0000000..a1c1554
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/timestamp.go
@@ -0,0 +1,41 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"strconv"
+	"time"
+)
+
+// Timestamp represents a time that can be unmarshalled from a JSON string
+// formatted as either an RFC3339 or Unix timestamp. This is necessary for some
+// fields since the GitHub API is inconsistent in how it represents times. All
+// exported methods of time.Time can be called on Timestamp.
+type Timestamp struct {
+	time.Time
+}
+
+func (t Timestamp) String() string {
+	return t.Time.String()
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+// Time is expected in RFC3339 or Unix format.
+func (t *Timestamp) UnmarshalJSON(data []byte) (err error) {
+	str := string(data)
+	i, err := strconv.ParseInt(str, 10, 64)
+	if err == nil {
+		(*t).Time = time.Unix(i, 0)
+	} else {
+		(*t).Time, err = time.Parse(`"`+time.RFC3339+`"`, str)
+	}
+	return
+}
+
+// Equal reports whether t and u are equal based on time.Equal
+func (t Timestamp) Equal(u Timestamp) bool {
+	return t.Time.Equal(u.Time)
+}
diff --git a/vendor/github.com/google/go-github/github/users.go b/vendor/github.com/google/go-github/github/users.go
new file mode 100644
index 0000000..0312724
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/users.go
@@ -0,0 +1,164 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// UsersService handles communication with the user related
+// methods of the GitHub API.
+//
+// GitHub API docs: http://developer.github.com/v3/users/
+type UsersService struct {
+	client *Client
+}
+
+// User represents a GitHub user.
+type User struct {
+	Login             *string    `json:"login,omitempty"`
+	ID                *int       `json:"id,omitempty"`
+	AvatarURL         *string    `json:"avatar_url,omitempty"`
+	HTMLURL           *string    `json:"html_url,omitempty"`
+	GravatarID        *string    `json:"gravatar_id,omitempty"`
+	Name              *string    `json:"name,omitempty"`
+	Company           *string    `json:"company,omitempty"`
+	Blog              *string    `json:"blog,omitempty"`
+	Location          *string    `json:"location,omitempty"`
+	Email             *string    `json:"email,omitempty"`
+	Hireable          *bool      `json:"hireable,omitempty"`
+	Bio               *string    `json:"bio,omitempty"`
+	PublicRepos       *int       `json:"public_repos,omitempty"`
+	PublicGists       *int       `json:"public_gists,omitempty"`
+	Followers         *int       `json:"followers,omitempty"`
+	Following         *int       `json:"following,omitempty"`
+	CreatedAt         *Timestamp `json:"created_at,omitempty"`
+	UpdatedAt         *Timestamp `json:"updated_at,omitempty"`
+	SuspendedAt       *Timestamp `json:"suspended_at,omitempty"`
+	Type              *string    `json:"type,omitempty"`
+	SiteAdmin         *bool      `json:"site_admin,omitempty"`
+	TotalPrivateRepos *int       `json:"total_private_repos,omitempty"`
+	OwnedPrivateRepos *int       `json:"owned_private_repos,omitempty"`
+	PrivateGists      *int       `json:"private_gists,omitempty"`
+	DiskUsage         *int       `json:"disk_usage,omitempty"`
+	Collaborators     *int       `json:"collaborators,omitempty"`
+	Plan              *Plan      `json:"plan,omitempty"`
+
+	// API URLs
+	URL               *string `json:"url,omitempty"`
+	EventsURL         *string `json:"events_url,omitempty"`
+	FollowingURL      *string `json:"following_url,omitempty"`
+	FollowersURL      *string `json:"followers_url,omitempty"`
+	GistsURL          *string `json:"gists_url,omitempty"`
+	OrganizationsURL  *string `json:"organizations_url,omitempty"`
+	ReceivedEventsURL *string `json:"received_events_url,omitempty"`
+	ReposURL          *string `json:"repos_url,omitempty"`
+	StarredURL        *string `json:"starred_url,omitempty"`
+	SubscriptionsURL  *string `json:"subscriptions_url,omitempty"`
+
+	// TextMatches is only populated from search results that request text matches
+	// See: search.go and https://developer.github.com/v3/search/#text-match-metadata
+	TextMatches []TextMatch `json:"text_matches,omitempty"`
+
+	// Permissions identifies the permissions that a user has on a given
+	// repository. This is only populated when calling Repositories.ListCollaborators.
+	Permissions *map[string]bool `json:"permissions,omitempty"`
+}
+
+func (u User) String() string {
+	return Stringify(u)
+}
+
+// Get fetches a user.  Passing the empty string will fetch the authenticated
+// user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/#get-a-single-user
+func (s *UsersService) Get(user string) (*User, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v", user)
+	} else {
+		u = "user"
+	}
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	uResp := new(User)
+	resp, err := s.client.Do(req, uResp)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return uResp, resp, err
+}
+
+// GetByID fetches a user.
+//
+// Note: GetByID uses the undocumented GitHub API endpoint /user/:id.
+func (s *UsersService) GetByID(id int) (*User, *Response, error) {
+	u := fmt.Sprintf("user/%d", id)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	user := new(User)
+	resp, err := s.client.Do(req, user)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return user, resp, err
+}
+
+// Edit the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/#update-the-authenticated-user
+func (s *UsersService) Edit(user *User) (*User, *Response, error) {
+	u := "user"
+	req, err := s.client.NewRequest("PATCH", u, user)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	uResp := new(User)
+	resp, err := s.client.Do(req, uResp)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return uResp, resp, err
+}
+
+// UserListOptions specifies optional parameters to the UsersService.ListAll
+// method.
+type UserListOptions struct {
+	// ID of the last user seen
+	Since int `url:"since,omitempty"`
+}
+
+// ListAll lists all GitHub users.
+//
+// GitHub API docs: http://developer.github.com/v3/users/#get-all-users
+func (s *UsersService) ListAll(opt *UserListOptions) ([]User, *Response, error) {
+	u, err := addOptions("users", opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	users := new([]User)
+	resp, err := s.client.Do(req, users)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *users, resp, err
+}
diff --git a/vendor/github.com/google/go-github/github/users_administration.go b/vendor/github.com/google/go-github/github/users_administration.go
new file mode 100644
index 0000000..dc1dcb8
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/users_administration.go
@@ -0,0 +1,64 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// PromoteSiteAdmin promotes a user to a site administrator of a GitHub Enterprise instance.
+//
+// GitHub API docs: https://developer.github.com/v3/users/administration/#promote-an-ordinary-user-to-a-site-administrator
+func (s *UsersService) PromoteSiteAdmin(user string) (*Response, error) {
+	u := fmt.Sprintf("users/%v/site_admin", user)
+
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// DemoteSiteAdmin demotes a user from site administrator of a GitHub Enterprise instance.
+//
+// GitHub API docs: https://developer.github.com/v3/users/administration/#demote-a-site-administrator-to-an-ordinary-user
+func (s *UsersService) DemoteSiteAdmin(user string) (*Response, error) {
+	u := fmt.Sprintf("users/%v/site_admin", user)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// Suspend a user on a GitHub Enterprise instance.
+//
+// GitHub API docs: https://developer.github.com/v3/users/administration/#suspend-a-user
+func (s *UsersService) Suspend(user string) (*Response, error) {
+	u := fmt.Sprintf("users/%v/suspended", user)
+
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// Unsuspend a user on a GitHub Enterprise instance.
+//
+// GitHub API docs: https://developer.github.com/v3/users/administration/#unsuspend-a-user
+func (s *UsersService) Unsuspend(user string) (*Response, error) {
+	u := fmt.Sprintf("users/%v/suspended", user)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/users_emails.go b/vendor/github.com/google/go-github/github/users_emails.go
new file mode 100644
index 0000000..7553191
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/users_emails.go
@@ -0,0 +1,69 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+// UserEmail represents user's email address
+type UserEmail struct {
+	Email    *string `json:"email,omitempty"`
+	Primary  *bool   `json:"primary,omitempty"`
+	Verified *bool   `json:"verified,omitempty"`
+}
+
+// ListEmails lists all email addresses for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/emails/#list-email-addresses-for-a-user
+func (s *UsersService) ListEmails(opt *ListOptions) ([]UserEmail, *Response, error) {
+	u := "user/emails"
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	emails := new([]UserEmail)
+	resp, err := s.client.Do(req, emails)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *emails, resp, err
+}
+
+// AddEmails adds email addresses of the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/emails/#add-email-addresses
+func (s *UsersService) AddEmails(emails []string) ([]UserEmail, *Response, error) {
+	u := "user/emails"
+	req, err := s.client.NewRequest("POST", u, emails)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	e := new([]UserEmail)
+	resp, err := s.client.Do(req, e)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *e, resp, err
+}
+
+// DeleteEmails deletes email addresses from authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/emails/#delete-email-addresses
+func (s *UsersService) DeleteEmails(emails []string) (*Response, error) {
+	u := "user/emails"
+	req, err := s.client.NewRequest("DELETE", u, emails)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/users_followers.go b/vendor/github.com/google/go-github/github/users_followers.go
new file mode 100644
index 0000000..7ecbed9
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/users_followers.go
@@ -0,0 +1,116 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// ListFollowers lists the followers for a user.  Passing the empty string will
+// fetch followers for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/followers/#list-followers-of-a-user
+func (s *UsersService) ListFollowers(user string, opt *ListOptions) ([]User, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/followers", user)
+	} else {
+		u = "user/followers"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	users := new([]User)
+	resp, err := s.client.Do(req, users)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *users, resp, err
+}
+
+// ListFollowing lists the people that a user is following.  Passing the empty
+// string will list people the authenticated user is following.
+//
+// GitHub API docs: http://developer.github.com/v3/users/followers/#list-users-followed-by-another-user
+func (s *UsersService) ListFollowing(user string, opt *ListOptions) ([]User, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/following", user)
+	} else {
+		u = "user/following"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	users := new([]User)
+	resp, err := s.client.Do(req, users)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *users, resp, err
+}
+
+// IsFollowing checks if "user" is following "target".  Passing the empty
+// string for "user" will check if the authenticated user is following "target".
+//
+// GitHub API docs: http://developer.github.com/v3/users/followers/#check-if-you-are-following-a-user
+func (s *UsersService) IsFollowing(user, target string) (bool, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/following/%v", user, target)
+	} else {
+		u = fmt.Sprintf("user/following/%v", target)
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return false, nil, err
+	}
+
+	resp, err := s.client.Do(req, nil)
+	following, err := parseBoolResponse(err)
+	return following, resp, err
+}
+
+// Follow will cause the authenticated user to follow the specified user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/followers/#follow-a-user
+func (s *UsersService) Follow(user string) (*Response, error) {
+	u := fmt.Sprintf("user/following/%v", user)
+	req, err := s.client.NewRequest("PUT", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
+
+// Unfollow will cause the authenticated user to unfollow the specified user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/followers/#unfollow-a-user
+func (s *UsersService) Unfollow(user string) (*Response, error) {
+	u := fmt.Sprintf("user/following/%v", user)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-github/github/users_keys.go b/vendor/github.com/google/go-github/github/users_keys.go
new file mode 100644
index 0000000..dcbd773
--- /dev/null
+++ b/vendor/github.com/google/go-github/github/users_keys.go
@@ -0,0 +1,104 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import "fmt"
+
+// Key represents a public SSH key used to authenticate a user or deploy script.
+type Key struct {
+	ID    *int    `json:"id,omitempty"`
+	Key   *string `json:"key,omitempty"`
+	URL   *string `json:"url,omitempty"`
+	Title *string `json:"title,omitempty"`
+}
+
+func (k Key) String() string {
+	return Stringify(k)
+}
+
+// ListKeys lists the verified public keys for a user.  Passing the empty
+// string will fetch keys for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/keys/#list-public-keys-for-a-user
+func (s *UsersService) ListKeys(user string, opt *ListOptions) ([]Key, *Response, error) {
+	var u string
+	if user != "" {
+		u = fmt.Sprintf("users/%v/keys", user)
+	} else {
+		u = "user/keys"
+	}
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	keys := new([]Key)
+	resp, err := s.client.Do(req, keys)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return *keys, resp, err
+}
+
+// GetKey fetches a single public key.
+//
+// GitHub API docs: http://developer.github.com/v3/users/keys/#get-a-single-public-key
+func (s *UsersService) GetKey(id int) (*Key, *Response, error) {
+	u := fmt.Sprintf("user/keys/%v", id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	key := new(Key)
+	resp, err := s.client.Do(req, key)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return key, resp, err
+}
+
+// CreateKey adds a public key for the authenticated user.
+//
+// GitHub API docs: http://developer.github.com/v3/users/keys/#create-a-public-key
+func (s *UsersService) CreateKey(key *Key) (*Key, *Response, error) {
+	u := "user/keys"
+
+	req, err := s.client.NewRequest("POST", u, key)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	k := new(Key)
+	resp, err := s.client.Do(req, k)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return k, resp, err
+}
+
+// DeleteKey deletes a public key.
+//
+// GitHub API docs: http://developer.github.com/v3/users/keys/#delete-a-public-key
+func (s *UsersService) DeleteKey(id int) (*Response, error) {
+	u := fmt.Sprintf("user/keys/%v", id)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}
diff --git a/vendor/github.com/google/go-querystring/LICENSE b/vendor/github.com/google/go-querystring/LICENSE
new file mode 100644
index 0000000..ae121a1
--- /dev/null
+++ b/vendor/github.com/google/go-querystring/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2013 Google. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/google/go-querystring/query/encode.go b/vendor/github.com/google/go-querystring/query/encode.go
new file mode 100644
index 0000000..19437b3
--- /dev/null
+++ b/vendor/github.com/google/go-querystring/query/encode.go
@@ -0,0 +1,320 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package query implements encoding of structs into URL query parameters.
+//
+// As a simple example:
+//
+// 	type Options struct {
+// 		Query   string `url:"q"`
+// 		ShowAll bool   `url:"all"`
+// 		Page    int    `url:"page"`
+// 	}
+//
+// 	opt := Options{ "foo", true, 2 }
+// 	v, _ := query.Values(opt)
+// 	fmt.Print(v.Encode()) // will output: "q=foo&all=true&page=2"
+//
+// The exact mapping between Go values and url.Values is described in the
+// documentation for the Values() function.
+package query
+
+import (
+	"bytes"
+	"fmt"
+	"net/url"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var timeType = reflect.TypeOf(time.Time{})
+
+var encoderType = reflect.TypeOf(new(Encoder)).Elem()
+
+// Encoder is an interface implemented by any type that wishes to encode
+// itself into URL values in a non-standard way.
+type Encoder interface {
+	EncodeValues(key string, v *url.Values) error
+}
+
+// Values returns the url.Values encoding of v.
+//
+// Values expects to be passed a struct, and traverses it recursively using the
+// following encoding rules.
+//
+// Each exported struct field is encoded as a URL parameter unless
+//
+//	- the field's tag is "-", or
+//	- the field is empty and its tag specifies the "omitempty" option
+//
+// The empty values are false, 0, any nil pointer or interface value, any array
+// slice, map, or string of length zero, and any time.Time that returns true
+// for IsZero().
+//
+// The URL parameter name defaults to the struct field name but can be
+// specified in the struct field's tag value.  The "url" key in the struct
+// field's tag value is the key name, followed by an optional comma and
+// options.  For example:
+//
+// 	// Field is ignored by this package.
+// 	Field int `url:"-"`
+//
+// 	// Field appears as URL parameter "myName".
+// 	Field int `url:"myName"`
+//
+// 	// Field appears as URL parameter "myName" and the field is omitted if
+// 	// its value is empty
+// 	Field int `url:"myName,omitempty"`
+//
+// 	// Field appears as URL parameter "Field" (the default), but the field
+// 	// is skipped if empty.  Note the leading comma.
+// 	Field int `url:",omitempty"`
+//
+// For encoding individual field values, the following type-dependent rules
+// apply:
+//
+// Boolean values default to encoding as the strings "true" or "false".
+// Including the "int" option signals that the field should be encoded as the
+// strings "1" or "0".
+//
+// time.Time values default to encoding as RFC3339 timestamps.  Including the
+// "unix" option signals that the field should be encoded as a Unix time (see
+// time.Unix())
+//
+// Slice and Array values default to encoding as multiple URL values of the
+// same name.  Including the "comma" option signals that the field should be
+// encoded as a single comma-delimited value.  Including the "space" option
+// similarly encodes the value as a single space-delimited string. Including
+// the "semicolon" option will encode the value as a semicolon-delimited string.
+// Including the "brackets" option signals that the multiple URL values should
+// have "[]" appended to the value name. "numbered" will append a number to
+// the end of each incidence of the value name, example:
+// name0=value0&name1=value1, etc.
+//
+// Anonymous struct fields are usually encoded as if their inner exported
+// fields were fields in the outer struct, subject to the standard Go
+// visibility rules.  An anonymous struct field with a name given in its URL
+// tag is treated as having that name, rather than being anonymous.
+//
+// Non-nil pointer values are encoded as the value pointed to.
+//
+// Nested structs are encoded including parent fields in value names for
+// scoping. e.g:
+//
+// 	"user[name]=acme&user[addr][postcode]=1234&user[addr][city]=SFO"
+//
+// All other values are encoded using their default string representation.
+//
+// Multiple fields that encode to the same URL parameter name will be included
+// as multiple URL values of the same name.
+func Values(v interface{}) (url.Values, error) {
+	values := make(url.Values)
+	val := reflect.ValueOf(v)
+	for val.Kind() == reflect.Ptr {
+		if val.IsNil() {
+			return values, nil
+		}
+		val = val.Elem()
+	}
+
+	if v == nil {
+		return values, nil
+	}
+
+	if val.Kind() != reflect.Struct {
+		return nil, fmt.Errorf("query: Values() expects struct input. Got %v", val.Kind())
+	}
+
+	err := reflectValue(values, val, "")
+	return values, err
+}
+
+// reflectValue populates the values parameter from the struct fields in val.
+// Embedded structs are followed recursively (using the rules defined in the
+// Values function documentation) breadth-first.
+func reflectValue(values url.Values, val reflect.Value, scope string) error {
+	var embedded []reflect.Value
+
+	typ := val.Type()
+	for i := 0; i < typ.NumField(); i++ {
+		sf := typ.Field(i)
+		if sf.PkgPath != "" && !sf.Anonymous { // unexported
+			continue
+		}
+
+		sv := val.Field(i)
+		tag := sf.Tag.Get("url")
+		if tag == "-" {
+			continue
+		}
+		name, opts := parseTag(tag)
+		if name == "" {
+			if sf.Anonymous && sv.Kind() == reflect.Struct {
+				// save embedded struct for later processing
+				embedded = append(embedded, sv)
+				continue
+			}
+
+			name = sf.Name
+		}
+
+		if scope != "" {
+			name = scope + "[" + name + "]"
+		}
+
+		if opts.Contains("omitempty") && isEmptyValue(sv) {
+			continue
+		}
+
+		if sv.Type().Implements(encoderType) {
+			if !reflect.Indirect(sv).IsValid() {
+				sv = reflect.New(sv.Type().Elem())
+			}
+
+			m := sv.Interface().(Encoder)
+			if err := m.EncodeValues(name, &values); err != nil {
+				return err
+			}
+			continue
+		}
+
+		if sv.Kind() == reflect.Slice || sv.Kind() == reflect.Array {
+			var del byte
+			if opts.Contains("comma") {
+				del = ','
+			} else if opts.Contains("space") {
+				del = ' '
+			} else if opts.Contains("semicolon") {
+				del = ';'
+			} else if opts.Contains("brackets") {
+				name = name + "[]"
+			}
+
+			if del != 0 {
+				s := new(bytes.Buffer)
+				first := true
+				for i := 0; i < sv.Len(); i++ {
+					if first {
+						first = false
+					} else {
+						s.WriteByte(del)
+					}
+					s.WriteString(valueString(sv.Index(i), opts))
+				}
+				values.Add(name, s.String())
+			} else {
+				for i := 0; i < sv.Len(); i++ {
+					k := name
+					if opts.Contains("numbered") {
+						k = fmt.Sprintf("%s%d", name, i)
+					}
+					values.Add(k, valueString(sv.Index(i), opts))
+				}
+			}
+			continue
+		}
+
+		if sv.Type() == timeType {
+			values.Add(name, valueString(sv, opts))
+			continue
+		}
+
+		for sv.Kind() == reflect.Ptr {
+			if sv.IsNil() {
+				break
+			}
+			sv = sv.Elem()
+		}
+
+		if sv.Kind() == reflect.Struct {
+			reflectValue(values, sv, name)
+			continue
+		}
+
+		values.Add(name, valueString(sv, opts))
+	}
+
+	for _, f := range embedded {
+		if err := reflectValue(values, f, scope); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// valueString returns the string representation of a value.
+func valueString(v reflect.Value, opts tagOptions) string {
+	for v.Kind() == reflect.Ptr {
+		if v.IsNil() {
+			return ""
+		}
+		v = v.Elem()
+	}
+
+	if v.Kind() == reflect.Bool && opts.Contains("int") {
+		if v.Bool() {
+			return "1"
+		}
+		return "0"
+	}
+
+	if v.Type() == timeType {
+		t := v.Interface().(time.Time)
+		if opts.Contains("unix") {
+			return strconv.FormatInt(t.Unix(), 10)
+		}
+		return t.Format(time.RFC3339)
+	}
+
+	return fmt.Sprint(v.Interface())
+}
+
+// isEmptyValue checks if a value should be considered empty for the purposes
+// of omitting fields with the "omitempty" option.
+func isEmptyValue(v reflect.Value) bool {
+	switch v.Kind() {
+	case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
+		return v.Len() == 0
+	case reflect.Bool:
+		return !v.Bool()
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int() == 0
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return v.Uint() == 0
+	case reflect.Float32, reflect.Float64:
+		return v.Float() == 0
+	case reflect.Interface, reflect.Ptr:
+		return v.IsNil()
+	}
+
+	if v.Type() == timeType {
+		return v.Interface().(time.Time).IsZero()
+	}
+
+	return false
+}
+
+// tagOptions is the string following a comma in a struct field's "url" tag, or
+// the empty string. It does not include the leading comma.
+type tagOptions []string
+
+// parseTag splits a struct field's url tag into its name and comma-separated
+// options.
+func parseTag(tag string) (string, tagOptions) {
+	s := strings.Split(tag, ",")
+	return s[0], s[1:]
+}
+
+// Contains checks whether the tagOptions contains the specified option.
+func (o tagOptions) Contains(option string) bool {
+	for _, s := range o {
+		if s == option {
+			return true
+		}
+	}
+	return false
+}
diff --git a/vendor/github.com/gorilla/context/LICENSE b/vendor/github.com/gorilla/context/LICENSE
new file mode 100644
index 0000000..0e5fb87
--- /dev/null
+++ b/vendor/github.com/gorilla/context/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+	 * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+	 * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+	 * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/gorilla/context/README.md b/vendor/github.com/gorilla/context/README.md
new file mode 100644
index 0000000..c60a31b
--- /dev/null
+++ b/vendor/github.com/gorilla/context/README.md
@@ -0,0 +1,7 @@
+context
+=======
+[![Build Status](https://travis-ci.org/gorilla/context.png?branch=master)](https://travis-ci.org/gorilla/context)
+
+gorilla/context is a general purpose registry for global request variables.
+
+Read the full documentation here: http://www.gorillatoolkit.org/pkg/context
diff --git a/vendor/github.com/gorilla/context/context.go b/vendor/github.com/gorilla/context/context.go
new file mode 100644
index 0000000..81cb128
--- /dev/null
+++ b/vendor/github.com/gorilla/context/context.go
@@ -0,0 +1,143 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package context
+
+import (
+	"net/http"
+	"sync"
+	"time"
+)
+
+var (
+	mutex sync.RWMutex
+	data  = make(map[*http.Request]map[interface{}]interface{})
+	datat = make(map[*http.Request]int64)
+)
+
+// Set stores a value for a given key in a given request.
+func Set(r *http.Request, key, val interface{}) {
+	mutex.Lock()
+	if data[r] == nil {
+		data[r] = make(map[interface{}]interface{})
+		datat[r] = time.Now().Unix()
+	}
+	data[r][key] = val
+	mutex.Unlock()
+}
+
+// Get returns a value stored for a given key in a given request.
+func Get(r *http.Request, key interface{}) interface{} {
+	mutex.RLock()
+	if ctx := data[r]; ctx != nil {
+		value := ctx[key]
+		mutex.RUnlock()
+		return value
+	}
+	mutex.RUnlock()
+	return nil
+}
+
+// GetOk returns stored value and presence state like multi-value return of map access.
+func GetOk(r *http.Request, key interface{}) (interface{}, bool) {
+	mutex.RLock()
+	if _, ok := data[r]; ok {
+		value, ok := data[r][key]
+		mutex.RUnlock()
+		return value, ok
+	}
+	mutex.RUnlock()
+	return nil, false
+}
+
+// GetAll returns all stored values for the request as a map. Nil is returned for invalid requests.
+func GetAll(r *http.Request) map[interface{}]interface{} {
+	mutex.RLock()
+	if context, ok := data[r]; ok {
+		result := make(map[interface{}]interface{}, len(context))
+		for k, v := range context {
+			result[k] = v
+		}
+		mutex.RUnlock()
+		return result
+	}
+	mutex.RUnlock()
+	return nil
+}
+
+// GetAllOk returns all stored values for the request as a map and a boolean value that indicates if
+// the request was registered.
+func GetAllOk(r *http.Request) (map[interface{}]interface{}, bool) {
+	mutex.RLock()
+	context, ok := data[r]
+	result := make(map[interface{}]interface{}, len(context))
+	for k, v := range context {
+		result[k] = v
+	}
+	mutex.RUnlock()
+	return result, ok
+}
+
+// Delete removes a value stored for a given key in a given request.
+func Delete(r *http.Request, key interface{}) {
+	mutex.Lock()
+	if data[r] != nil {
+		delete(data[r], key)
+	}
+	mutex.Unlock()
+}
+
+// Clear removes all values stored for a given request.
+//
+// This is usually called by a handler wrapper to clean up request
+// variables at the end of a request lifetime. See ClearHandler().
+func Clear(r *http.Request) {
+	mutex.Lock()
+	clear(r)
+	mutex.Unlock()
+}
+
+// clear is Clear without the lock.
+func clear(r *http.Request) {
+	delete(data, r)
+	delete(datat, r)
+}
+
+// Purge removes request data stored for longer than maxAge, in seconds.
+// It returns the amount of requests removed.
+//
+// If maxAge <= 0, all request data is removed.
+//
+// This is only used for sanity check: in case context cleaning was not
+// properly set some request data can be kept forever, consuming an increasing
+// amount of memory. In case this is detected, Purge() must be called
+// periodically until the problem is fixed.
+func Purge(maxAge int) int {
+	mutex.Lock()
+	count := 0
+	if maxAge <= 0 {
+		count = len(data)
+		data = make(map[*http.Request]map[interface{}]interface{})
+		datat = make(map[*http.Request]int64)
+	} else {
+		min := time.Now().Unix() - int64(maxAge)
+		for r := range data {
+			if datat[r] < min {
+				clear(r)
+				count++
+			}
+		}
+	}
+	mutex.Unlock()
+	return count
+}
+
+// ClearHandler wraps an http.Handler and clears request values at the end
+// of a request lifetime.
+func ClearHandler(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		defer Clear(r)
+		h.ServeHTTP(w, r)
+	})
+}
diff --git a/vendor/github.com/gorilla/context/doc.go b/vendor/github.com/gorilla/context/doc.go
new file mode 100644
index 0000000..73c7400
--- /dev/null
+++ b/vendor/github.com/gorilla/context/doc.go
@@ -0,0 +1,82 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package context stores values shared during a request lifetime.
+
+For example, a router can set variables extracted from the URL and later
+application handlers can access those values, or it can be used to store
+sessions values to be saved at the end of a request. There are several
+others common uses.
+
+The idea was posted by Brad Fitzpatrick to the go-nuts mailing list:
+
+	http://groups.google.com/group/golang-nuts/msg/e2d679d303aa5d53
+
+Here's the basic usage: first define the keys that you will need. The key
+type is interface{} so a key can be of any type that supports equality.
+Here we define a key using a custom int type to avoid name collisions:
+
+	package foo
+
+	import (
+		"github.com/gorilla/context"
+	)
+
+	type key int
+
+	const MyKey key = 0
+
+Then set a variable. Variables are bound to an http.Request object, so you
+need a request instance to set a value:
+
+	context.Set(r, MyKey, "bar")
+
+The application can later access the variable using the same key you provided:
+
+	func MyHandler(w http.ResponseWriter, r *http.Request) {
+		// val is "bar".
+		val := context.Get(r, foo.MyKey)
+
+		// returns ("bar", true)
+		val, ok := context.GetOk(r, foo.MyKey)
+		// ...
+	}
+
+And that's all about the basic usage. We discuss some other ideas below.
+
+Any type can be stored in the context. To enforce a given type, make the key
+private and wrap Get() and Set() to accept and return values of a specific
+type:
+
+	type key int
+
+	const mykey key = 0
+
+	// GetMyKey returns a value for this package from the request values.
+	func GetMyKey(r *http.Request) SomeType {
+		if rv := context.Get(r, mykey); rv != nil {
+			return rv.(SomeType)
+		}
+		return nil
+	}
+
+	// SetMyKey sets a value for this package in the request values.
+	func SetMyKey(r *http.Request, val SomeType) {
+		context.Set(r, mykey, val)
+	}
+
+Variables must be cleared at the end of a request, to remove all values
+that were stored. This can be done in an http.Handler, after a request was
+served. Just call Clear() passing the request:
+
+	context.Clear(r)
+
+...or use ClearHandler(), which conveniently wraps an http.Handler to clear
+variables at the end of a request lifetime.
+
+The Routers from the packages gorilla/mux and gorilla/pat call Clear()
+so if you are using either of them you don't need to clear the context manually.
+*/
+package context
diff --git a/vendor/github.com/gorilla/mux/LICENSE b/vendor/github.com/gorilla/mux/LICENSE
new file mode 100644
index 0000000..0e5fb87
--- /dev/null
+++ b/vendor/github.com/gorilla/mux/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+	 * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+	 * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+	 * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/gorilla/mux/README.md b/vendor/github.com/gorilla/mux/README.md
new file mode 100644
index 0000000..9516c51
--- /dev/null
+++ b/vendor/github.com/gorilla/mux/README.md
@@ -0,0 +1,242 @@
+mux
+===
+[![GoDoc](https://godoc.org/github.com/gorilla/mux?status.svg)](https://godoc.org/github.com/gorilla/mux)
+[![Build Status](https://travis-ci.org/gorilla/mux.svg?branch=master)](https://travis-ci.org/gorilla/mux)
+
+http://www.gorillatoolkit.org/pkg/mux
+
+Package `gorilla/mux` implements a request router and dispatcher.
+
+The name mux stands for "HTTP request multiplexer". Like the standard `http.ServeMux`, `mux.Router` matches incoming requests against a list of registered routes and calls a handler for the route that matches the URL or other conditions. The main features are:
+
+* Requests can be matched based on URL host, path, path prefix, schemes, header and query values, HTTP methods or using custom matchers.
+* URL hosts and paths can have variables with an optional regular expression.
+* Registered URLs can be built, or "reversed", which helps maintaining references to resources.
+* Routes can be used as subrouters: nested routes are only tested if the parent route matches. This is useful to define groups of routes that share common conditions like a host, a path prefix or other repeated attributes. As a bonus, this optimizes request matching.
+* It implements the `http.Handler` interface so it is compatible with the standard `http.ServeMux`.
+
+Let's start registering a couple of URL paths and handlers:
+
+```go
+func main() {
+	r := mux.NewRouter()
+	r.HandleFunc("/", HomeHandler)
+	r.HandleFunc("/products", ProductsHandler)
+	r.HandleFunc("/articles", ArticlesHandler)
+	http.Handle("/", r)
+}
+```
+
+Here we register three routes mapping URL paths to handlers. This is equivalent to how `http.HandleFunc()` works: if an incoming request URL matches one of the paths, the corresponding handler is called passing (`http.ResponseWriter`, `*http.Request`) as parameters.
+
+Paths can have variables. They are defined using the format `{name}` or `{name:pattern}`. If a regular expression pattern is not defined, the matched variable will be anything until the next slash. For example:
+
+```go
+r := mux.NewRouter()
+r.HandleFunc("/products/{key}", ProductHandler)
+r.HandleFunc("/articles/{category}/", ArticlesCategoryHandler)
+r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler)
+```
+
+The names are used to create a map of route variables which can be retrieved calling `mux.Vars()`:
+
+```go
+vars := mux.Vars(request)
+category := vars["category"]
+```
+
+And this is all you need to know about the basic usage. More advanced options are explained below.
+
+Routes can also be restricted to a domain or subdomain. Just define a host pattern to be matched. They can also have variables:
+
+```go
+r := mux.NewRouter()
+// Only matches if domain is "www.example.com".
+r.Host("www.example.com")
+// Matches a dynamic subdomain.
+r.Host("{subdomain:[a-z]+}.domain.com")
+```
+
+There are several other matchers that can be added. To match path prefixes:
+
+```go
+r.PathPrefix("/products/")
+```
+
+...or HTTP methods:
+
+```go
+r.Methods("GET", "POST")
+```
+
+...or URL schemes:
+
+```go
+r.Schemes("https")
+```
+
+...or header values:
+
+```go
+r.Headers("X-Requested-With", "XMLHttpRequest")
+```
+
+...or query values:
+
+```go
+r.Queries("key", "value")
+```
+
+...or to use a custom matcher function:
+
+```go
+r.MatcherFunc(func(r *http.Request, rm *RouteMatch) bool {
+	return r.ProtoMajor == 0
+})
+```
+
+...and finally, it is possible to combine several matchers in a single route:
+
+```go
+r.HandleFunc("/products", ProductsHandler).
+  Host("www.example.com").
+  Methods("GET").
+  Schemes("http")
+```
+
+Setting the same matching conditions again and again can be boring, so we have a way to group several routes that share the same requirements. We call it "subrouting".
+
+For example, let's say we have several URLs that should only match when the host is `www.example.com`. Create a route for that host and get a "subrouter" from it:
+
+```go
+r := mux.NewRouter()
+s := r.Host("www.example.com").Subrouter()
+```
+
+Then register routes in the subrouter:
+
+```go
+s.HandleFunc("/products/", ProductsHandler)
+s.HandleFunc("/products/{key}", ProductHandler)
+s.HandleFunc("/articles/{category}/{id:[0-9]+}"), ArticleHandler)
+```
+
+The three URL paths we registered above will only be tested if the domain is `www.example.com`, because the subrouter is tested first. This is not only convenient, but also optimizes request matching. You can create subrouters combining any attribute matchers accepted by a route.
+
+Subrouters can be used to create domain or path "namespaces": you define subrouters in a central place and then parts of the app can register its paths relatively to a given subrouter.
+
+There's one more thing about subroutes. When a subrouter has a path prefix, the inner routes use it as base for their paths:
+
+```go
+r := mux.NewRouter()
+s := r.PathPrefix("/products").Subrouter()
+// "/products/"
+s.HandleFunc("/", ProductsHandler)
+// "/products/{key}/"
+s.HandleFunc("/{key}/", ProductHandler)
+// "/products/{key}/details"
+s.HandleFunc("/{key}/details", ProductDetailsHandler)
+```
+
+Now let's see how to build registered URLs.
+
+Routes can be named. All routes that define a name can have their URLs built, or "reversed". We define a name calling `Name()` on a route. For example:
+
+```go
+r := mux.NewRouter()
+r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
+  Name("article")
+```
+
+To build a URL, get the route and call the `URL()` method, passing a sequence of key/value pairs for the route variables. For the previous route, we would do:
+
+```go
+url, err := r.Get("article").URL("category", "technology", "id", "42")
+```
+
+...and the result will be a `url.URL` with the following path:
+
+```
+"/articles/technology/42"
+```
+
+This also works for host variables:
+
+```go
+r := mux.NewRouter()
+r.Host("{subdomain}.domain.com").
+  Path("/articles/{category}/{id:[0-9]+}").
+  HandlerFunc(ArticleHandler).
+  Name("article")
+
+// url.String() will be "http://news.domain.com/articles/technology/42"
+url, err := r.Get("article").URL("subdomain", "news",
+                                 "category", "technology",
+                                 "id", "42")
+```
+
+All variables defined in the route are required, and their values must conform to the corresponding patterns. These requirements guarantee that a generated URL will always match a registered route -- the only exception is for explicitly defined "build-only" routes which never match.
+
+Regex support also exists for matching Headers within a route. For example, we could do:
+
+```go
+r.HeadersRegexp("Content-Type", "application/(text|json)")
+```
+
+...and the route will match both requests with a Content-Type of `application/json` as well as `application/text`
+
+There's also a way to build only the URL host or path for a route: use the methods `URLHost()` or `URLPath()` instead. For the previous route, we would do:
+
+```go
+// "http://news.domain.com/"
+host, err := r.Get("article").URLHost("subdomain", "news")
+
+// "/articles/technology/42"
+path, err := r.Get("article").URLPath("category", "technology", "id", "42")
+```
+
+And if you use subrouters, host and path defined separately can be built as well:
+
+```go
+r := mux.NewRouter()
+s := r.Host("{subdomain}.domain.com").Subrouter()
+s.Path("/articles/{category}/{id:[0-9]+}").
+  HandlerFunc(ArticleHandler).
+  Name("article")
+
+// "http://news.domain.com/articles/technology/42"
+url, err := r.Get("article").URL("subdomain", "news",
+                                 "category", "technology",
+                                 "id", "42")
+```
+
+## Full Example
+
+Here's a complete, runnable example of a small `mux` based server:
+
+```go
+package main
+
+import (
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+func YourHandler(w http.ResponseWriter, r *http.Request) {
+	w.Write([]byte("Gorilla!\n"))
+}
+
+func main() {
+	r := mux.NewRouter()
+	// Routes consist of a path and a handler function.
+	r.HandleFunc("/", YourHandler)
+
+	// Bind to a port and pass our router in
+	http.ListenAndServe(":8000", r)
+}
+```
+
+## License
+
+BSD licensed. See the LICENSE file for details.
diff --git a/vendor/github.com/gorilla/mux/doc.go b/vendor/github.com/gorilla/mux/doc.go
new file mode 100644
index 0000000..835f534
--- /dev/null
+++ b/vendor/github.com/gorilla/mux/doc.go
@@ -0,0 +1,206 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package mux implements a request router and dispatcher.
+
+The name mux stands for "HTTP request multiplexer". Like the standard
+http.ServeMux, mux.Router matches incoming requests against a list of
+registered routes and calls a handler for the route that matches the URL
+or other conditions. The main features are:
+
+	* Requests can be matched based on URL host, path, path prefix, schemes,
+	  header and query values, HTTP methods or using custom matchers.
+	* URL hosts and paths can have variables with an optional regular
+	  expression.
+	* Registered URLs can be built, or "reversed", which helps maintaining
+	  references to resources.
+	* Routes can be used as subrouters: nested routes are only tested if the
+	  parent route matches. This is useful to define groups of routes that
+	  share common conditions like a host, a path prefix or other repeated
+	  attributes. As a bonus, this optimizes request matching.
+	* It implements the http.Handler interface so it is compatible with the
+	  standard http.ServeMux.
+
+Let's start registering a couple of URL paths and handlers:
+
+	func main() {
+		r := mux.NewRouter()
+		r.HandleFunc("/", HomeHandler)
+		r.HandleFunc("/products", ProductsHandler)
+		r.HandleFunc("/articles", ArticlesHandler)
+		http.Handle("/", r)
+	}
+
+Here we register three routes mapping URL paths to handlers. This is
+equivalent to how http.HandleFunc() works: if an incoming request URL matches
+one of the paths, the corresponding handler is called passing
+(http.ResponseWriter, *http.Request) as parameters.
+
+Paths can have variables. They are defined using the format {name} or
+{name:pattern}. If a regular expression pattern is not defined, the matched
+variable will be anything until the next slash. For example:
+
+	r := mux.NewRouter()
+	r.HandleFunc("/products/{key}", ProductHandler)
+	r.HandleFunc("/articles/{category}/", ArticlesCategoryHandler)
+	r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler)
+
+The names are used to create a map of route variables which can be retrieved
+calling mux.Vars():
+
+	vars := mux.Vars(request)
+	category := vars["category"]
+
+And this is all you need to know about the basic usage. More advanced options
+are explained below.
+
+Routes can also be restricted to a domain or subdomain. Just define a host
+pattern to be matched. They can also have variables:
+
+	r := mux.NewRouter()
+	// Only matches if domain is "www.example.com".
+	r.Host("www.example.com")
+	// Matches a dynamic subdomain.
+	r.Host("{subdomain:[a-z]+}.domain.com")
+
+There are several other matchers that can be added. To match path prefixes:
+
+	r.PathPrefix("/products/")
+
+...or HTTP methods:
+
+	r.Methods("GET", "POST")
+
+...or URL schemes:
+
+	r.Schemes("https")
+
+...or header values:
+
+	r.Headers("X-Requested-With", "XMLHttpRequest")
+
+...or query values:
+
+	r.Queries("key", "value")
+
+...or to use a custom matcher function:
+
+	r.MatcherFunc(func(r *http.Request, rm *RouteMatch) bool {
+		return r.ProtoMajor == 0
+	})
+
+...and finally, it is possible to combine several matchers in a single route:
+
+	r.HandleFunc("/products", ProductsHandler).
+	  Host("www.example.com").
+	  Methods("GET").
+	  Schemes("http")
+
+Setting the same matching conditions again and again can be boring, so we have
+a way to group several routes that share the same requirements.
+We call it "subrouting".
+
+For example, let's say we have several URLs that should only match when the
+host is "www.example.com". Create a route for that host and get a "subrouter"
+from it:
+
+	r := mux.NewRouter()
+	s := r.Host("www.example.com").Subrouter()
+
+Then register routes in the subrouter:
+
+	s.HandleFunc("/products/", ProductsHandler)
+	s.HandleFunc("/products/{key}", ProductHandler)
+	s.HandleFunc("/articles/{category}/{id:[0-9]+}"), ArticleHandler)
+
+The three URL paths we registered above will only be tested if the domain is
+"www.example.com", because the subrouter is tested first. This is not
+only convenient, but also optimizes request matching. You can create
+subrouters combining any attribute matchers accepted by a route.
+
+Subrouters can be used to create domain or path "namespaces": you define
+subrouters in a central place and then parts of the app can register its
+paths relatively to a given subrouter.
+
+There's one more thing about subroutes. When a subrouter has a path prefix,
+the inner routes use it as base for their paths:
+
+	r := mux.NewRouter()
+	s := r.PathPrefix("/products").Subrouter()
+	// "/products/"
+	s.HandleFunc("/", ProductsHandler)
+	// "/products/{key}/"
+	s.HandleFunc("/{key}/", ProductHandler)
+	// "/products/{key}/details"
+	s.HandleFunc("/{key}/details", ProductDetailsHandler)
+
+Now let's see how to build registered URLs.
+
+Routes can be named. All routes that define a name can have their URLs built,
+or "reversed". We define a name calling Name() on a route. For example:
+
+	r := mux.NewRouter()
+	r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
+	  Name("article")
+
+To build a URL, get the route and call the URL() method, passing a sequence of
+key/value pairs for the route variables. For the previous route, we would do:
+
+	url, err := r.Get("article").URL("category", "technology", "id", "42")
+
+...and the result will be a url.URL with the following path:
+
+	"/articles/technology/42"
+
+This also works for host variables:
+
+	r := mux.NewRouter()
+	r.Host("{subdomain}.domain.com").
+	  Path("/articles/{category}/{id:[0-9]+}").
+	  HandlerFunc(ArticleHandler).
+	  Name("article")
+
+	// url.String() will be "http://news.domain.com/articles/technology/42"
+	url, err := r.Get("article").URL("subdomain", "news",
+	                                 "category", "technology",
+	                                 "id", "42")
+
+All variables defined in the route are required, and their values must
+conform to the corresponding patterns. These requirements guarantee that a
+generated URL will always match a registered route -- the only exception is
+for explicitly defined "build-only" routes which never match.
+
+Regex support also exists for matching Headers within a route. For example, we could do:
+
+	r.HeadersRegexp("Content-Type", "application/(text|json)")
+
+...and the route will match both requests with a Content-Type of `application/json` as well as
+`application/text`
+
+There's also a way to build only the URL host or path for a route:
+use the methods URLHost() or URLPath() instead. For the previous route,
+we would do:
+
+	// "http://news.domain.com/"
+	host, err := r.Get("article").URLHost("subdomain", "news")
+
+	// "/articles/technology/42"
+	path, err := r.Get("article").URLPath("category", "technology", "id", "42")
+
+And if you use subrouters, host and path defined separately can be built
+as well:
+
+	r := mux.NewRouter()
+	s := r.Host("{subdomain}.domain.com").Subrouter()
+	s.Path("/articles/{category}/{id:[0-9]+}").
+	  HandlerFunc(ArticleHandler).
+	  Name("article")
+
+	// "http://news.domain.com/articles/technology/42"
+	url, err := r.Get("article").URL("subdomain", "news",
+	                                 "category", "technology",
+	                                 "id", "42")
+*/
+package mux
diff --git a/vendor/github.com/gorilla/mux/mux.go b/vendor/github.com/gorilla/mux/mux.go
new file mode 100644
index 0000000..94f5ddd
--- /dev/null
+++ b/vendor/github.com/gorilla/mux/mux.go
@@ -0,0 +1,499 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package mux
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"path"
+	"regexp"
+
+	"github.com/gorilla/context"
+)
+
+// NewRouter returns a new router instance.
+func NewRouter() *Router {
+	return &Router{namedRoutes: make(map[string]*Route), KeepContext: false}
+}
+
+// Router registers routes to be matched and dispatches a handler.
+//
+// It implements the http.Handler interface, so it can be registered to serve
+// requests:
+//
+//     var router = mux.NewRouter()
+//
+//     func main() {
+//         http.Handle("/", router)
+//     }
+//
+// Or, for Google App Engine, register it in a init() function:
+//
+//     func init() {
+//         http.Handle("/", router)
+//     }
+//
+// This will send all incoming requests to the router.
+type Router struct {
+	// Configurable Handler to be used when no route matches.
+	NotFoundHandler http.Handler
+	// Parent route, if this is a subrouter.
+	parent parentRoute
+	// Routes to be matched, in order.
+	routes []*Route
+	// Routes by name for URL building.
+	namedRoutes map[string]*Route
+	// See Router.StrictSlash(). This defines the flag for new routes.
+	strictSlash bool
+	// See Router.SkipClean(). This defines the flag for new routes.
+	skipClean bool
+	// If true, do not clear the request context after handling the request
+	KeepContext bool
+}
+
+// Match matches registered routes against the request.
+func (r *Router) Match(req *http.Request, match *RouteMatch) bool {
+	for _, route := range r.routes {
+		if route.Match(req, match) {
+			return true
+		}
+	}
+
+	// Closest match for a router (includes sub-routers)
+	if r.NotFoundHandler != nil {
+		match.Handler = r.NotFoundHandler
+		return true
+	}
+	return false
+}
+
+// ServeHTTP dispatches the handler registered in the matched route.
+//
+// When there is a match, the route variables can be retrieved calling
+// mux.Vars(request).
+func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	if !r.skipClean {
+		// Clean path to canonical form and redirect.
+		if p := cleanPath(req.URL.Path); p != req.URL.Path {
+
+			// Added 3 lines (Philip Schlump) - It was dropping the query string and #whatever from query.
+			// This matches with fix in go 1.2 r.c. 4 for same problem.  Go Issue:
+			// http://code.google.com/p/go/issues/detail?id=5252
+			url := *req.URL
+			url.Path = p
+			p = url.String()
+
+			w.Header().Set("Location", p)
+			w.WriteHeader(http.StatusMovedPermanently)
+			return
+		}
+	}
+	var match RouteMatch
+	var handler http.Handler
+	if r.Match(req, &match) {
+		handler = match.Handler
+		setVars(req, match.Vars)
+		setCurrentRoute(req, match.Route)
+	}
+	if handler == nil {
+		handler = http.NotFoundHandler()
+	}
+	if !r.KeepContext {
+		defer context.Clear(req)
+	}
+	handler.ServeHTTP(w, req)
+}
+
+// Get returns a route registered with the given name.
+func (r *Router) Get(name string) *Route {
+	return r.getNamedRoutes()[name]
+}
+
+// GetRoute returns a route registered with the given name. This method
+// was renamed to Get() and remains here for backwards compatibility.
+func (r *Router) GetRoute(name string) *Route {
+	return r.getNamedRoutes()[name]
+}
+
+// StrictSlash defines the trailing slash behavior for new routes. The initial
+// value is false.
+//
+// When true, if the route path is "/path/", accessing "/path" will redirect
+// to the former and vice versa. In other words, your application will always
+// see the path as specified in the route.
+//
+// When false, if the route path is "/path", accessing "/path/" will not match
+// this route and vice versa.
+//
+// Special case: when a route sets a path prefix using the PathPrefix() method,
+// strict slash is ignored for that route because the redirect behavior can't
+// be determined from a prefix alone. However, any subrouters created from that
+// route inherit the original StrictSlash setting.
+func (r *Router) StrictSlash(value bool) *Router {
+	r.strictSlash = value
+	return r
+}
+
+// SkipClean defines the path cleaning behaviour for new routes. The initial
+// value is false. Users should be careful about which routes are not cleaned
+//
+// When true, if the route path is "/path//to", it will remain with the double
+// slash. This is helpful if you have a route like: /fetch/http://xkcd.com/534/
+//
+// When false, the path will be cleaned, so /fetch/http://xkcd.com/534/ will
+// become /fetch/http/xkcd.com/534
+func (r *Router) SkipClean(value bool) *Router {
+	r.skipClean = value
+	return r
+}
+
+// ----------------------------------------------------------------------------
+// parentRoute
+// ----------------------------------------------------------------------------
+
+// getNamedRoutes returns the map where named routes are registered.
+func (r *Router) getNamedRoutes() map[string]*Route {
+	if r.namedRoutes == nil {
+		if r.parent != nil {
+			r.namedRoutes = r.parent.getNamedRoutes()
+		} else {
+			r.namedRoutes = make(map[string]*Route)
+		}
+	}
+	return r.namedRoutes
+}
+
+// getRegexpGroup returns regexp definitions from the parent route, if any.
+func (r *Router) getRegexpGroup() *routeRegexpGroup {
+	if r.parent != nil {
+		return r.parent.getRegexpGroup()
+	}
+	return nil
+}
+
+func (r *Router) buildVars(m map[string]string) map[string]string {
+	if r.parent != nil {
+		m = r.parent.buildVars(m)
+	}
+	return m
+}
+
+// ----------------------------------------------------------------------------
+// Route factories
+// ----------------------------------------------------------------------------
+
+// NewRoute registers an empty route.
+func (r *Router) NewRoute() *Route {
+	route := &Route{parent: r, strictSlash: r.strictSlash, skipClean: r.skipClean}
+	r.routes = append(r.routes, route)
+	return route
+}
+
+// Handle registers a new route with a matcher for the URL path.
+// See Route.Path() and Route.Handler().
+func (r *Router) Handle(path string, handler http.Handler) *Route {
+	return r.NewRoute().Path(path).Handler(handler)
+}
+
+// HandleFunc registers a new route with a matcher for the URL path.
+// See Route.Path() and Route.HandlerFunc().
+func (r *Router) HandleFunc(path string, f func(http.ResponseWriter,
+	*http.Request)) *Route {
+	return r.NewRoute().Path(path).HandlerFunc(f)
+}
+
+// Headers registers a new route with a matcher for request header values.
+// See Route.Headers().
+func (r *Router) Headers(pairs ...string) *Route {
+	return r.NewRoute().Headers(pairs...)
+}
+
+// Host registers a new route with a matcher for the URL host.
+// See Route.Host().
+func (r *Router) Host(tpl string) *Route {
+	return r.NewRoute().Host(tpl)
+}
+
+// MatcherFunc registers a new route with a custom matcher function.
+// See Route.MatcherFunc().
+func (r *Router) MatcherFunc(f MatcherFunc) *Route {
+	return r.NewRoute().MatcherFunc(f)
+}
+
+// Methods registers a new route with a matcher for HTTP methods.
+// See Route.Methods().
+func (r *Router) Methods(methods ...string) *Route {
+	return r.NewRoute().Methods(methods...)
+}
+
+// Path registers a new route with a matcher for the URL path.
+// See Route.Path().
+func (r *Router) Path(tpl string) *Route {
+	return r.NewRoute().Path(tpl)
+}
+
+// PathPrefix registers a new route with a matcher for the URL path prefix.
+// See Route.PathPrefix().
+func (r *Router) PathPrefix(tpl string) *Route {
+	return r.NewRoute().PathPrefix(tpl)
+}
+
+// Queries registers a new route with a matcher for URL query values.
+// See Route.Queries().
+func (r *Router) Queries(pairs ...string) *Route {
+	return r.NewRoute().Queries(pairs...)
+}
+
+// Schemes registers a new route with a matcher for URL schemes.
+// See Route.Schemes().
+func (r *Router) Schemes(schemes ...string) *Route {
+	return r.NewRoute().Schemes(schemes...)
+}
+
+// BuildVarsFunc registers a new route with a custom function for modifying
+// route variables before building a URL.
+func (r *Router) BuildVarsFunc(f BuildVarsFunc) *Route {
+	return r.NewRoute().BuildVarsFunc(f)
+}
+
+// Walk walks the router and all its sub-routers, calling walkFn for each route
+// in the tree. The routes are walked in the order they were added. Sub-routers
+// are explored depth-first.
+func (r *Router) Walk(walkFn WalkFunc) error {
+	return r.walk(walkFn, []*Route{})
+}
+
+// SkipRouter is used as a return value from WalkFuncs to indicate that the
+// router that walk is about to descend down to should be skipped.
+var SkipRouter = errors.New("skip this router")
+
+// WalkFunc is the type of the function called for each route visited by Walk.
+// At every invocation, it is given the current route, and the current router,
+// and a list of ancestor routes that lead to the current route.
+type WalkFunc func(route *Route, router *Router, ancestors []*Route) error
+
+func (r *Router) walk(walkFn WalkFunc, ancestors []*Route) error {
+	for _, t := range r.routes {
+		if t.regexp == nil || t.regexp.path == nil || t.regexp.path.template == "" {
+			continue
+		}
+
+		err := walkFn(t, r, ancestors)
+		if err == SkipRouter {
+			continue
+		}
+		for _, sr := range t.matchers {
+			if h, ok := sr.(*Router); ok {
+				err := h.walk(walkFn, ancestors)
+				if err != nil {
+					return err
+				}
+			}
+		}
+		if h, ok := t.handler.(*Router); ok {
+			ancestors = append(ancestors, t)
+			err := h.walk(walkFn, ancestors)
+			if err != nil {
+				return err
+			}
+			ancestors = ancestors[:len(ancestors)-1]
+		}
+	}
+	return nil
+}
+
+// ----------------------------------------------------------------------------
+// Context
+// ----------------------------------------------------------------------------
+
+// RouteMatch stores information about a matched route.
+type RouteMatch struct {
+	Route   *Route
+	Handler http.Handler
+	Vars    map[string]string
+}
+
+type contextKey int
+
+const (
+	varsKey contextKey = iota
+	routeKey
+)
+
+// Vars returns the route variables for the current request, if any.
+func Vars(r *http.Request) map[string]string {
+	if rv := context.Get(r, varsKey); rv != nil {
+		return rv.(map[string]string)
+	}
+	return nil
+}
+
+// CurrentRoute returns the matched route for the current request, if any.
+// This only works when called inside the handler of the matched route
+// because the matched route is stored in the request context which is cleared
+// after the handler returns, unless the KeepContext option is set on the
+// Router.
+func CurrentRoute(r *http.Request) *Route {
+	if rv := context.Get(r, routeKey); rv != nil {
+		return rv.(*Route)
+	}
+	return nil
+}
+
+func setVars(r *http.Request, val interface{}) {
+	if val != nil {
+		context.Set(r, varsKey, val)
+	}
+}
+
+func setCurrentRoute(r *http.Request, val interface{}) {
+	if val != nil {
+		context.Set(r, routeKey, val)
+	}
+}
+
+// ----------------------------------------------------------------------------
+// Helpers
+// ----------------------------------------------------------------------------
+
+// cleanPath returns the canonical path for p, eliminating . and .. elements.
+// Borrowed from the net/http package.
+func cleanPath(p string) string {
+	if p == "" {
+		return "/"
+	}
+	if p[0] != '/' {
+		p = "/" + p
+	}
+	np := path.Clean(p)
+	// path.Clean removes trailing slash except for root;
+	// put the trailing slash back if necessary.
+	if p[len(p)-1] == '/' && np != "/" {
+		np += "/"
+	}
+
+	return np
+}
+
+// uniqueVars returns an error if two slices contain duplicated strings.
+func uniqueVars(s1, s2 []string) error {
+	for _, v1 := range s1 {
+		for _, v2 := range s2 {
+			if v1 == v2 {
+				return fmt.Errorf("mux: duplicated route variable %q", v2)
+			}
+		}
+	}
+	return nil
+}
+
+// checkPairs returns the count of strings passed in, and an error if
+// the count is not an even number.
+func checkPairs(pairs ...string) (int, error) {
+	length := len(pairs)
+	if length%2 != 0 {
+		return length, fmt.Errorf(
+			"mux: number of parameters must be multiple of 2, got %v", pairs)
+	}
+	return length, nil
+}
+
+// mapFromPairsToString converts variadic string parameters to a
+// string to string map.
+func mapFromPairsToString(pairs ...string) (map[string]string, error) {
+	length, err := checkPairs(pairs...)
+	if err != nil {
+		return nil, err
+	}
+	m := make(map[string]string, length/2)
+	for i := 0; i < length; i += 2 {
+		m[pairs[i]] = pairs[i+1]
+	}
+	return m, nil
+}
+
+// mapFromPairsToRegex converts variadic string paramers to a
+// string to regex map.
+func mapFromPairsToRegex(pairs ...string) (map[string]*regexp.Regexp, error) {
+	length, err := checkPairs(pairs...)
+	if err != nil {
+		return nil, err
+	}
+	m := make(map[string]*regexp.Regexp, length/2)
+	for i := 0; i < length; i += 2 {
+		regex, err := regexp.Compile(pairs[i+1])
+		if err != nil {
+			return nil, err
+		}
+		m[pairs[i]] = regex
+	}
+	return m, nil
+}
+
+// matchInArray returns true if the given string value is in the array.
+func matchInArray(arr []string, value string) bool {
+	for _, v := range arr {
+		if v == value {
+			return true
+		}
+	}
+	return false
+}
+
+// matchMapWithString returns true if the given key/value pairs exist in a given map.
+func matchMapWithString(toCheck map[string]string, toMatch map[string][]string, canonicalKey bool) bool {
+	for k, v := range toCheck {
+		// Check if key exists.
+		if canonicalKey {
+			k = http.CanonicalHeaderKey(k)
+		}
+		if values := toMatch[k]; values == nil {
+			return false
+		} else if v != "" {
+			// If value was defined as an empty string we only check that the
+			// key exists. Otherwise we also check for equality.
+			valueExists := false
+			for _, value := range values {
+				if v == value {
+					valueExists = true
+					break
+				}
+			}
+			if !valueExists {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+// matchMapWithRegex returns true if the given key/value pairs exist in a given map compiled against
+// the given regex
+func matchMapWithRegex(toCheck map[string]*regexp.Regexp, toMatch map[string][]string, canonicalKey bool) bool {
+	for k, v := range toCheck {
+		// Check if key exists.
+		if canonicalKey {
+			k = http.CanonicalHeaderKey(k)
+		}
+		if values := toMatch[k]; values == nil {
+			return false
+		} else if v != nil {
+			// If value was defined as an empty string we only check that the
+			// key exists. Otherwise we also check for equality.
+			valueExists := false
+			for _, value := range values {
+				if v.MatchString(value) {
+					valueExists = true
+					break
+				}
+			}
+			if !valueExists {
+				return false
+			}
+		}
+	}
+	return true
+}
diff --git a/vendor/github.com/gorilla/mux/regexp.go b/vendor/github.com/gorilla/mux/regexp.go
new file mode 100644
index 0000000..08710bc
--- /dev/null
+++ b/vendor/github.com/gorilla/mux/regexp.go
@@ -0,0 +1,312 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package mux
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// newRouteRegexp parses a route template and returns a routeRegexp,
+// used to match a host, a path or a query string.
+//
+// It will extract named variables, assemble a regexp to be matched, create
+// a "reverse" template to build URLs and compile regexps to validate variable
+// values used in URL building.
+//
+// Previously we accepted only Python-like identifiers for variable
+// names ([a-zA-Z_][a-zA-Z0-9_]*), but currently the only restriction is that
+// name and pattern can't be empty, and names can't contain a colon.
+func newRouteRegexp(tpl string, matchHost, matchPrefix, matchQuery, strictSlash bool) (*routeRegexp, error) {
+	// Check if it is well-formed.
+	idxs, errBraces := braceIndices(tpl)
+	if errBraces != nil {
+		return nil, errBraces
+	}
+	// Backup the original.
+	template := tpl
+	// Now let's parse it.
+	defaultPattern := "[^/]+"
+	if matchQuery {
+		defaultPattern = "[^?&]*"
+	} else if matchHost {
+		defaultPattern = "[^.]+"
+		matchPrefix = false
+	}
+	// Only match strict slash if not matching
+	if matchPrefix || matchHost || matchQuery {
+		strictSlash = false
+	}
+	// Set a flag for strictSlash.
+	endSlash := false
+	if strictSlash && strings.HasSuffix(tpl, "/") {
+		tpl = tpl[:len(tpl)-1]
+		endSlash = true
+	}
+	varsN := make([]string, len(idxs)/2)
+	varsR := make([]*regexp.Regexp, len(idxs)/2)
+	pattern := bytes.NewBufferString("")
+	pattern.WriteByte('^')
+	reverse := bytes.NewBufferString("")
+	var end int
+	var err error
+	for i := 0; i < len(idxs); i += 2 {
+		// Set all values we are interested in.
+		raw := tpl[end:idxs[i]]
+		end = idxs[i+1]
+		parts := strings.SplitN(tpl[idxs[i]+1:end-1], ":", 2)
+		name := parts[0]
+		patt := defaultPattern
+		if len(parts) == 2 {
+			patt = parts[1]
+		}
+		// Name or pattern can't be empty.
+		if name == "" || patt == "" {
+			return nil, fmt.Errorf("mux: missing name or pattern in %q",
+				tpl[idxs[i]:end])
+		}
+		// Build the regexp pattern.
+		fmt.Fprintf(pattern, "%s(?P<%s>%s)", regexp.QuoteMeta(raw), varGroupName(i/2), patt)
+
+		// Build the reverse template.
+		fmt.Fprintf(reverse, "%s%%s", raw)
+
+		// Append variable name and compiled pattern.
+		varsN[i/2] = name
+		varsR[i/2], err = regexp.Compile(fmt.Sprintf("^%s$", patt))
+		if err != nil {
+			return nil, err
+		}
+	}
+	// Add the remaining.
+	raw := tpl[end:]
+	pattern.WriteString(regexp.QuoteMeta(raw))
+	if strictSlash {
+		pattern.WriteString("[/]?")
+	}
+	if matchQuery {
+		// Add the default pattern if the query value is empty
+		if queryVal := strings.SplitN(template, "=", 2)[1]; queryVal == "" {
+			pattern.WriteString(defaultPattern)
+		}
+	}
+	if !matchPrefix {
+		pattern.WriteByte('$')
+	}
+	reverse.WriteString(raw)
+	if endSlash {
+		reverse.WriteByte('/')
+	}
+	// Compile full regexp.
+	reg, errCompile := regexp.Compile(pattern.String())
+	if errCompile != nil {
+		return nil, errCompile
+	}
+	// Done!
+	return &routeRegexp{
+		template:    template,
+		matchHost:   matchHost,
+		matchQuery:  matchQuery,
+		strictSlash: strictSlash,
+		regexp:      reg,
+		reverse:     reverse.String(),
+		varsN:       varsN,
+		varsR:       varsR,
+	}, nil
+}
+
+// routeRegexp stores a regexp to match a host or path and information to
+// collect and validate route variables.
+type routeRegexp struct {
+	// The unmodified template.
+	template string
+	// True for host match, false for path or query string match.
+	matchHost bool
+	// True for query string match, false for path and host match.
+	matchQuery bool
+	// The strictSlash value defined on the route, but disabled if PathPrefix was used.
+	strictSlash bool
+	// Expanded regexp.
+	regexp *regexp.Regexp
+	// Reverse template.
+	reverse string
+	// Variable names.
+	varsN []string
+	// Variable regexps (validators).
+	varsR []*regexp.Regexp
+}
+
+// Match matches the regexp against the URL host or path.
+func (r *routeRegexp) Match(req *http.Request, match *RouteMatch) bool {
+	if !r.matchHost {
+		if r.matchQuery {
+			return r.matchQueryString(req)
+		}
+
+		return r.regexp.MatchString(req.URL.Path)
+	}
+
+	return r.regexp.MatchString(getHost(req))
+}
+
+// url builds a URL part using the given values.
+func (r *routeRegexp) url(values map[string]string) (string, error) {
+	urlValues := make([]interface{}, len(r.varsN))
+	for k, v := range r.varsN {
+		value, ok := values[v]
+		if !ok {
+			return "", fmt.Errorf("mux: missing route variable %q", v)
+		}
+		urlValues[k] = value
+	}
+	rv := fmt.Sprintf(r.reverse, urlValues...)
+	if !r.regexp.MatchString(rv) {
+		// The URL is checked against the full regexp, instead of checking
+		// individual variables. This is faster but to provide a good error
+		// message, we check individual regexps if the URL doesn't match.
+		for k, v := range r.varsN {
+			if !r.varsR[k].MatchString(values[v]) {
+				return "", fmt.Errorf(
+					"mux: variable %q doesn't match, expected %q", values[v],
+					r.varsR[k].String())
+			}
+		}
+	}
+	return rv, nil
+}
+
+// getURLQuery returns a single query parameter from a request URL.
+// For a URL with foo=bar&baz=ding, we return only the relevant key
+// value pair for the routeRegexp.
+func (r *routeRegexp) getURLQuery(req *http.Request) string {
+	if !r.matchQuery {
+		return ""
+	}
+	templateKey := strings.SplitN(r.template, "=", 2)[0]
+	for key, vals := range req.URL.Query() {
+		if key == templateKey && len(vals) > 0 {
+			return key + "=" + vals[0]
+		}
+	}
+	return ""
+}
+
+func (r *routeRegexp) matchQueryString(req *http.Request) bool {
+	return r.regexp.MatchString(r.getURLQuery(req))
+}
+
+// braceIndices returns the first level curly brace indices from a string.
+// It returns an error in case of unbalanced braces.
+func braceIndices(s string) ([]int, error) {
+	var level, idx int
+	var idxs []int
+	for i := 0; i < len(s); i++ {
+		switch s[i] {
+		case '{':
+			if level++; level == 1 {
+				idx = i
+			}
+		case '}':
+			if level--; level == 0 {
+				idxs = append(idxs, idx, i+1)
+			} else if level < 0 {
+				return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
+			}
+		}
+	}
+	if level != 0 {
+		return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
+	}
+	return idxs, nil
+}
+
+// varGroupName builds a capturing group name for the indexed variable.
+func varGroupName(idx int) string {
+	return "v" + strconv.Itoa(idx)
+}
+
+// ----------------------------------------------------------------------------
+// routeRegexpGroup
+// ----------------------------------------------------------------------------
+
+// routeRegexpGroup groups the route matchers that carry variables.
+type routeRegexpGroup struct {
+	host    *routeRegexp
+	path    *routeRegexp
+	queries []*routeRegexp
+}
+
+// setMatch extracts the variables from the URL once a route matches.
+func (v *routeRegexpGroup) setMatch(req *http.Request, m *RouteMatch, r *Route) {
+	// Store host variables.
+	if v.host != nil {
+		host := getHost(req)
+		matches := v.host.regexp.FindStringSubmatchIndex(host)
+		if len(matches) > 0 {
+			extractVars(host, matches, v.host.varsN, m.Vars)
+		}
+	}
+	// Store path variables.
+	if v.path != nil {
+		matches := v.path.regexp.FindStringSubmatchIndex(req.URL.Path)
+		if len(matches) > 0 {
+			extractVars(req.URL.Path, matches, v.path.varsN, m.Vars)
+			// Check if we should redirect.
+			if v.path.strictSlash {
+				p1 := strings.HasSuffix(req.URL.Path, "/")
+				p2 := strings.HasSuffix(v.path.template, "/")
+				if p1 != p2 {
+					u, _ := url.Parse(req.URL.String())
+					if p1 {
+						u.Path = u.Path[:len(u.Path)-1]
+					} else {
+						u.Path += "/"
+					}
+					m.Handler = http.RedirectHandler(u.String(), 301)
+				}
+			}
+		}
+	}
+	// Store query string variables.
+	for _, q := range v.queries {
+		queryURL := q.getURLQuery(req)
+		matches := q.regexp.FindStringSubmatchIndex(queryURL)
+		if len(matches) > 0 {
+			extractVars(queryURL, matches, q.varsN, m.Vars)
+		}
+	}
+}
+
+// getHost tries its best to return the request host.
+func getHost(r *http.Request) string {
+	if r.URL.IsAbs() {
+		return r.URL.Host
+	}
+	host := r.Host
+	// Slice off any port information.
+	if i := strings.Index(host, ":"); i != -1 {
+		host = host[:i]
+	}
+	return host
+
+}
+
+func extractVars(input string, matches []int, names []string, output map[string]string) {
+	matchesCount := 0
+	prevEnd := -1
+	for i := 2; i < len(matches) && matchesCount < len(names); i += 2 {
+		if prevEnd < matches[i+1] {
+			value := input[matches[i]:matches[i+1]]
+			output[names[matchesCount]] = value
+			prevEnd = matches[i+1]
+			matchesCount++
+		}
+	}
+}
diff --git a/vendor/github.com/gorilla/mux/route.go b/vendor/github.com/gorilla/mux/route.go
new file mode 100644
index 0000000..6c53f9f
--- /dev/null
+++ b/vendor/github.com/gorilla/mux/route.go
@@ -0,0 +1,634 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package mux
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strings"
+)
+
+// Route stores information to match a request and build URLs.
+type Route struct {
+	// Parent where the route was registered (a Router).
+	parent parentRoute
+	// Request handler for the route.
+	handler http.Handler
+	// List of matchers.
+	matchers []matcher
+	// Manager for the variables from host and path.
+	regexp *routeRegexpGroup
+	// If true, when the path pattern is "/path/", accessing "/path" will
+	// redirect to the former and vice versa.
+	strictSlash bool
+	// If true, when the path pattern is "/path//to", accessing "/path//to"
+	// will not redirect
+	skipClean bool
+	// If true, this route never matches: it is only used to build URLs.
+	buildOnly bool
+	// The name used to build URLs.
+	name string
+	// Error resulted from building a route.
+	err error
+
+	buildVarsFunc BuildVarsFunc
+}
+
+func (r *Route) SkipClean() bool {
+	return r.skipClean
+}
+
+// Match matches the route against the request.
+func (r *Route) Match(req *http.Request, match *RouteMatch) bool {
+	if r.buildOnly || r.err != nil {
+		return false
+	}
+	// Match everything.
+	for _, m := range r.matchers {
+		if matched := m.Match(req, match); !matched {
+			return false
+		}
+	}
+	// Yay, we have a match. Let's collect some info about it.
+	if match.Route == nil {
+		match.Route = r
+	}
+	if match.Handler == nil {
+		match.Handler = r.handler
+	}
+	if match.Vars == nil {
+		match.Vars = make(map[string]string)
+	}
+	// Set variables.
+	if r.regexp != nil {
+		r.regexp.setMatch(req, match, r)
+	}
+	return true
+}
+
+// ----------------------------------------------------------------------------
+// Route attributes
+// ----------------------------------------------------------------------------
+
+// GetError returns an error resulted from building the route, if any.
+func (r *Route) GetError() error {
+	return r.err
+}
+
+// BuildOnly sets the route to never match: it is only used to build URLs.
+func (r *Route) BuildOnly() *Route {
+	r.buildOnly = true
+	return r
+}
+
+// Handler --------------------------------------------------------------------
+
+// Handler sets a handler for the route.
+func (r *Route) Handler(handler http.Handler) *Route {
+	if r.err == nil {
+		r.handler = handler
+	}
+	return r
+}
+
+// HandlerFunc sets a handler function for the route.
+func (r *Route) HandlerFunc(f func(http.ResponseWriter, *http.Request)) *Route {
+	return r.Handler(http.HandlerFunc(f))
+}
+
+// GetHandler returns the handler for the route, if any.
+func (r *Route) GetHandler() http.Handler {
+	return r.handler
+}
+
+// Name -----------------------------------------------------------------------
+
+// Name sets the name for the route, used to build URLs.
+// If the name was registered already it will be overwritten.
+func (r *Route) Name(name string) *Route {
+	if r.name != "" {
+		r.err = fmt.Errorf("mux: route already has name %q, can't set %q",
+			r.name, name)
+	}
+	if r.err == nil {
+		r.name = name
+		r.getNamedRoutes()[name] = r
+	}
+	return r
+}
+
+// GetName returns the name for the route, if any.
+func (r *Route) GetName() string {
+	return r.name
+}
+
+// ----------------------------------------------------------------------------
+// Matchers
+// ----------------------------------------------------------------------------
+
+// matcher types try to match a request.
+type matcher interface {
+	Match(*http.Request, *RouteMatch) bool
+}
+
+// addMatcher adds a matcher to the route.
+func (r *Route) addMatcher(m matcher) *Route {
+	if r.err == nil {
+		r.matchers = append(r.matchers, m)
+	}
+	return r
+}
+
+// addRegexpMatcher adds a host or path matcher and builder to a route.
+func (r *Route) addRegexpMatcher(tpl string, matchHost, matchPrefix, matchQuery bool) error {
+	if r.err != nil {
+		return r.err
+	}
+	r.regexp = r.getRegexpGroup()
+	if !matchHost && !matchQuery {
+		if len(tpl) == 0 || tpl[0] != '/' {
+			return fmt.Errorf("mux: path must start with a slash, got %q", tpl)
+		}
+		if r.regexp.path != nil {
+			tpl = strings.TrimRight(r.regexp.path.template, "/") + tpl
+		}
+	}
+	rr, err := newRouteRegexp(tpl, matchHost, matchPrefix, matchQuery, r.strictSlash)
+	if err != nil {
+		return err
+	}
+	for _, q := range r.regexp.queries {
+		if err = uniqueVars(rr.varsN, q.varsN); err != nil {
+			return err
+		}
+	}
+	if matchHost {
+		if r.regexp.path != nil {
+			if err = uniqueVars(rr.varsN, r.regexp.path.varsN); err != nil {
+				return err
+			}
+		}
+		r.regexp.host = rr
+	} else {
+		if r.regexp.host != nil {
+			if err = uniqueVars(rr.varsN, r.regexp.host.varsN); err != nil {
+				return err
+			}
+		}
+		if matchQuery {
+			r.regexp.queries = append(r.regexp.queries, rr)
+		} else {
+			r.regexp.path = rr
+		}
+	}
+	r.addMatcher(rr)
+	return nil
+}
+
+// Headers --------------------------------------------------------------------
+
+// headerMatcher matches the request against header values.
+type headerMatcher map[string]string
+
+func (m headerMatcher) Match(r *http.Request, match *RouteMatch) bool {
+	return matchMapWithString(m, r.Header, true)
+}
+
+// Headers adds a matcher for request header values.
+// It accepts a sequence of key/value pairs to be matched. For example:
+//
+//     r := mux.NewRouter()
+//     r.Headers("Content-Type", "application/json",
+//               "X-Requested-With", "XMLHttpRequest")
+//
+// The above route will only match if both request header values match.
+// If the value is an empty string, it will match any value if the key is set.
+func (r *Route) Headers(pairs ...string) *Route {
+	if r.err == nil {
+		var headers map[string]string
+		headers, r.err = mapFromPairsToString(pairs...)
+		return r.addMatcher(headerMatcher(headers))
+	}
+	return r
+}
+
+// headerRegexMatcher matches the request against the route given a regex for the header
+type headerRegexMatcher map[string]*regexp.Regexp
+
+func (m headerRegexMatcher) Match(r *http.Request, match *RouteMatch) bool {
+	return matchMapWithRegex(m, r.Header, true)
+}
+
+// HeadersRegexp accepts a sequence of key/value pairs, where the value has regex
+// support. For example:
+//
+//     r := mux.NewRouter()
+//     r.HeadersRegexp("Content-Type", "application/(text|json)",
+//               "X-Requested-With", "XMLHttpRequest")
+//
+// The above route will only match if both the request header matches both regular expressions.
+// It the value is an empty string, it will match any value if the key is set.
+func (r *Route) HeadersRegexp(pairs ...string) *Route {
+	if r.err == nil {
+		var headers map[string]*regexp.Regexp
+		headers, r.err = mapFromPairsToRegex(pairs...)
+		return r.addMatcher(headerRegexMatcher(headers))
+	}
+	return r
+}
+
+// Host -----------------------------------------------------------------------
+
+// Host adds a matcher for the URL host.
+// It accepts a template with zero or more URL variables enclosed by {}.
+// Variables can define an optional regexp pattern to be matched:
+//
+// - {name} matches anything until the next dot.
+//
+// - {name:pattern} matches the given regexp pattern.
+//
+// For example:
+//
+//     r := mux.NewRouter()
+//     r.Host("www.example.com")
+//     r.Host("{subdomain}.domain.com")
+//     r.Host("{subdomain:[a-z]+}.domain.com")
+//
+// Variable names must be unique in a given route. They can be retrieved
+// calling mux.Vars(request).
+func (r *Route) Host(tpl string) *Route {
+	r.err = r.addRegexpMatcher(tpl, true, false, false)
+	return r
+}
+
+// MatcherFunc ----------------------------------------------------------------
+
+// MatcherFunc is the function signature used by custom matchers.
+type MatcherFunc func(*http.Request, *RouteMatch) bool
+
+// Match returns the match for a given request.
+func (m MatcherFunc) Match(r *http.Request, match *RouteMatch) bool {
+	return m(r, match)
+}
+
+// MatcherFunc adds a custom function to be used as request matcher.
+func (r *Route) MatcherFunc(f MatcherFunc) *Route {
+	return r.addMatcher(f)
+}
+
+// Methods --------------------------------------------------------------------
+
+// methodMatcher matches the request against HTTP methods.
+type methodMatcher []string
+
+func (m methodMatcher) Match(r *http.Request, match *RouteMatch) bool {
+	return matchInArray(m, r.Method)
+}
+
+// Methods adds a matcher for HTTP methods.
+// It accepts a sequence of one or more methods to be matched, e.g.:
+// "GET", "POST", "PUT".
+func (r *Route) Methods(methods ...string) *Route {
+	for k, v := range methods {
+		methods[k] = strings.ToUpper(v)
+	}
+	return r.addMatcher(methodMatcher(methods))
+}
+
+// Path -----------------------------------------------------------------------
+
+// Path adds a matcher for the URL path.
+// It accepts a template with zero or more URL variables enclosed by {}. The
+// template must start with a "/".
+// Variables can define an optional regexp pattern to be matched:
+//
+// - {name} matches anything until the next slash.
+//
+// - {name:pattern} matches the given regexp pattern.
+//
+// For example:
+//
+//     r := mux.NewRouter()
+//     r.Path("/products/").Handler(ProductsHandler)
+//     r.Path("/products/{key}").Handler(ProductsHandler)
+//     r.Path("/articles/{category}/{id:[0-9]+}").
+//       Handler(ArticleHandler)
+//
+// Variable names must be unique in a given route. They can be retrieved
+// calling mux.Vars(request).
+func (r *Route) Path(tpl string) *Route {
+	r.err = r.addRegexpMatcher(tpl, false, false, false)
+	return r
+}
+
+// PathPrefix -----------------------------------------------------------------
+
+// PathPrefix adds a matcher for the URL path prefix. This matches if the given
+// template is a prefix of the full URL path. See Route.Path() for details on
+// the tpl argument.
+//
+// Note that it does not treat slashes specially ("/foobar/" will be matched by
+// the prefix "/foo") so you may want to use a trailing slash here.
+//
+// Also note that the setting of Router.StrictSlash() has no effect on routes
+// with a PathPrefix matcher.
+func (r *Route) PathPrefix(tpl string) *Route {
+	r.err = r.addRegexpMatcher(tpl, false, true, false)
+	return r
+}
+
+// Query ----------------------------------------------------------------------
+
+// Queries adds a matcher for URL query values.
+// It accepts a sequence of key/value pairs. Values may define variables.
+// For example:
+//
+//     r := mux.NewRouter()
+//     r.Queries("foo", "bar", "id", "{id:[0-9]+}")
+//
+// The above route will only match if the URL contains the defined queries
+// values, e.g.: ?foo=bar&id=42.
+//
+// It the value is an empty string, it will match any value if the key is set.
+//
+// Variables can define an optional regexp pattern to be matched:
+//
+// - {name} matches anything until the next slash.
+//
+// - {name:pattern} matches the given regexp pattern.
+func (r *Route) Queries(pairs ...string) *Route {
+	length := len(pairs)
+	if length%2 != 0 {
+		r.err = fmt.Errorf(
+			"mux: number of parameters must be multiple of 2, got %v", pairs)
+		return nil
+	}
+	for i := 0; i < length; i += 2 {
+		if r.err = r.addRegexpMatcher(pairs[i]+"="+pairs[i+1], false, false, true); r.err != nil {
+			return r
+		}
+	}
+
+	return r
+}
+
+// Schemes --------------------------------------------------------------------
+
+// schemeMatcher matches the request against URL schemes.
+type schemeMatcher []string
+
+func (m schemeMatcher) Match(r *http.Request, match *RouteMatch) bool {
+	return matchInArray(m, r.URL.Scheme)
+}
+
+// Schemes adds a matcher for URL schemes.
+// It accepts a sequence of schemes to be matched, e.g.: "http", "https".
+func (r *Route) Schemes(schemes ...string) *Route {
+	for k, v := range schemes {
+		schemes[k] = strings.ToLower(v)
+	}
+	return r.addMatcher(schemeMatcher(schemes))
+}
+
+// BuildVarsFunc --------------------------------------------------------------
+
+// BuildVarsFunc is the function signature used by custom build variable
+// functions (which can modify route variables before a route's URL is built).
+type BuildVarsFunc func(map[string]string) map[string]string
+
+// BuildVarsFunc adds a custom function to be used to modify build variables
+// before a route's URL is built.
+func (r *Route) BuildVarsFunc(f BuildVarsFunc) *Route {
+	r.buildVarsFunc = f
+	return r
+}
+
+// Subrouter ------------------------------------------------------------------
+
+// Subrouter creates a subrouter for the route.
+//
+// It will test the inner routes only if the parent route matched. For example:
+//
+//     r := mux.NewRouter()
+//     s := r.Host("www.example.com").Subrouter()
+//     s.HandleFunc("/products/", ProductsHandler)
+//     s.HandleFunc("/products/{key}", ProductHandler)
+//     s.HandleFunc("/articles/{category}/{id:[0-9]+}"), ArticleHandler)
+//
+// Here, the routes registered in the subrouter won't be tested if the host
+// doesn't match.
+func (r *Route) Subrouter() *Router {
+	router := &Router{parent: r, strictSlash: r.strictSlash}
+	r.addMatcher(router)
+	return router
+}
+
+// ----------------------------------------------------------------------------
+// URL building
+// ----------------------------------------------------------------------------
+
+// URL builds a URL for the route.
+//
+// It accepts a sequence of key/value pairs for the route variables. For
+// example, given this route:
+//
+//     r := mux.NewRouter()
+//     r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
+//       Name("article")
+//
+// ...a URL for it can be built using:
+//
+//     url, err := r.Get("article").URL("category", "technology", "id", "42")
+//
+// ...which will return an url.URL with the following path:
+//
+//     "/articles/technology/42"
+//
+// This also works for host variables:
+//
+//     r := mux.NewRouter()
+//     r.Host("{subdomain}.domain.com").
+//       HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
+//       Name("article")
+//
+//     // url.String() will be "http://news.domain.com/articles/technology/42"
+//     url, err := r.Get("article").URL("subdomain", "news",
+//                                      "category", "technology",
+//                                      "id", "42")
+//
+// All variables defined in the route are required, and their values must
+// conform to the corresponding patterns.
+func (r *Route) URL(pairs ...string) (*url.URL, error) {
+	if r.err != nil {
+		return nil, r.err
+	}
+	if r.regexp == nil {
+		return nil, errors.New("mux: route doesn't have a host or path")
+	}
+	values, err := r.prepareVars(pairs...)
+	if err != nil {
+		return nil, err
+	}
+	var scheme, host, path string
+	if r.regexp.host != nil {
+		// Set a default scheme.
+		scheme = "http"
+		if host, err = r.regexp.host.url(values); err != nil {
+			return nil, err
+		}
+	}
+	if r.regexp.path != nil {
+		if path, err = r.regexp.path.url(values); err != nil {
+			return nil, err
+		}
+	}
+	return &url.URL{
+		Scheme: scheme,
+		Host:   host,
+		Path:   path,
+	}, nil
+}
+
+// URLHost builds the host part of the URL for a route. See Route.URL().
+//
+// The route must have a host defined.
+func (r *Route) URLHost(pairs ...string) (*url.URL, error) {
+	if r.err != nil {
+		return nil, r.err
+	}
+	if r.regexp == nil || r.regexp.host == nil {
+		return nil, errors.New("mux: route doesn't have a host")
+	}
+	values, err := r.prepareVars(pairs...)
+	if err != nil {
+		return nil, err
+	}
+	host, err := r.regexp.host.url(values)
+	if err != nil {
+		return nil, err
+	}
+	return &url.URL{
+		Scheme: "http",
+		Host:   host,
+	}, nil
+}
+
+// URLPath builds the path part of the URL for a route. See Route.URL().
+//
+// The route must have a path defined.
+func (r *Route) URLPath(pairs ...string) (*url.URL, error) {
+	if r.err != nil {
+		return nil, r.err
+	}
+	if r.regexp == nil || r.regexp.path == nil {
+		return nil, errors.New("mux: route doesn't have a path")
+	}
+	values, err := r.prepareVars(pairs...)
+	if err != nil {
+		return nil, err
+	}
+	path, err := r.regexp.path.url(values)
+	if err != nil {
+		return nil, err
+	}
+	return &url.URL{
+		Path: path,
+	}, nil
+}
+
+// GetPathTemplate returns the template used to build the
+// route match.
+// This is useful for building simple REST API documentation and for instrumentation
+// against third-party services.
+// An error will be returned if the route does not define a path.
+func (r *Route) GetPathTemplate() (string, error) {
+	if r.err != nil {
+		return "", r.err
+	}
+	if r.regexp == nil || r.regexp.path == nil {
+		return "", errors.New("mux: route doesn't have a path")
+	}
+	return r.regexp.path.template, nil
+}
+
+// GetHostTemplate returns the template used to build the
+// route match.
+// This is useful for building simple REST API documentation and for instrumentation
+// against third-party services.
+// An error will be returned if the route does not define a host.
+func (r *Route) GetHostTemplate() (string, error) {
+	if r.err != nil {
+		return "", r.err
+	}
+	if r.regexp == nil || r.regexp.host == nil {
+		return "", errors.New("mux: route doesn't have a host")
+	}
+	return r.regexp.host.template, nil
+}
+
+// prepareVars converts the route variable pairs into a map. If the route has a
+// BuildVarsFunc, it is invoked.
+func (r *Route) prepareVars(pairs ...string) (map[string]string, error) {
+	m, err := mapFromPairsToString(pairs...)
+	if err != nil {
+		return nil, err
+	}
+	return r.buildVars(m), nil
+}
+
+func (r *Route) buildVars(m map[string]string) map[string]string {
+	if r.parent != nil {
+		m = r.parent.buildVars(m)
+	}
+	if r.buildVarsFunc != nil {
+		m = r.buildVarsFunc(m)
+	}
+	return m
+}
+
+// ----------------------------------------------------------------------------
+// parentRoute
+// ----------------------------------------------------------------------------
+
+// parentRoute allows routes to know about parent host and path definitions.
+type parentRoute interface {
+	getNamedRoutes() map[string]*Route
+	getRegexpGroup() *routeRegexpGroup
+	buildVars(map[string]string) map[string]string
+}
+
+// getNamedRoutes returns the map where named routes are registered.
+func (r *Route) getNamedRoutes() map[string]*Route {
+	if r.parent == nil {
+		// During tests router is not always set.
+		r.parent = NewRouter()
+	}
+	return r.parent.getNamedRoutes()
+}
+
+// getRegexpGroup returns regexp definitions from this route.
+func (r *Route) getRegexpGroup() *routeRegexpGroup {
+	if r.regexp == nil {
+		if r.parent == nil {
+			// During tests router is not always set.
+			r.parent = NewRouter()
+		}
+		regexp := r.parent.getRegexpGroup()
+		if regexp == nil {
+			r.regexp = new(routeRegexpGroup)
+		} else {
+			// Copy.
+			r.regexp = &routeRegexpGroup{
+				host:    regexp.host,
+				path:    regexp.path,
+				queries: regexp.queries,
+			}
+		}
+	}
+	return r.regexp
+}
diff --git a/vendor/github.com/gorilla/securecookie/LICENSE b/vendor/github.com/gorilla/securecookie/LICENSE
new file mode 100644
index 0000000..0e5fb87
--- /dev/null
+++ b/vendor/github.com/gorilla/securecookie/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+	 * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+	 * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+	 * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/gorilla/securecookie/README.md b/vendor/github.com/gorilla/securecookie/README.md
new file mode 100644
index 0000000..5ed299e
--- /dev/null
+++ b/vendor/github.com/gorilla/securecookie/README.md
@@ -0,0 +1,76 @@
+securecookie
+============
+[![GoDoc](https://godoc.org/github.com/gorilla/securecookie?status.svg)](https://godoc.org/github.com/gorilla/securecookie) [![Build Status](https://travis-ci.org/gorilla/securecookie.png?branch=master)](https://travis-ci.org/gorilla/securecookie)
+
+securecookie encodes and decodes authenticated and optionally encrypted 
+cookie values.
+
+Secure cookies can't be forged, because their values are validated using HMAC.
+When encrypted, the content is also inaccessible to malicious eyes. It is still
+recommended that sensitive data not be stored in cookies, and that HTTPS be used
+to prevent cookie [replay attacks](https://en.wikipedia.org/wiki/Replay_attack).
+
+## Examples
+
+To use it, first create a new SecureCookie instance:
+
+```go
+// Hash keys should be at least 32 bytes long
+var hashKey = []byte("very-secret")
+// Block keys should be 16 bytes (AES-128) or 32 bytes (AES-256) long.
+// Shorter keys may weaken the encryption used.
+var blockKey = []byte("a-lot-secret")
+var s = securecookie.New(hashKey, blockKey)
+```
+
+The hashKey is required, used to authenticate the cookie value using HMAC.
+It is recommended to use a key with 32 or 64 bytes.
+
+The blockKey is optional, used to encrypt the cookie value -- set it to nil
+to not use encryption. If set, the length must correspond to the block size
+of the encryption algorithm. For AES, used by default, valid lengths are
+16, 24, or 32 bytes to select AES-128, AES-192, or AES-256.
+
+Strong keys can be created using the convenience function GenerateRandomKey().
+
+Once a SecureCookie instance is set, use it to encode a cookie value:
+
+```go
+func SetCookieHandler(w http.ResponseWriter, r *http.Request) {
+	value := map[string]string{
+		"foo": "bar",
+	}
+	if encoded, err := s.Encode("cookie-name", value); err == nil {
+		cookie := &http.Cookie{
+			Name:  "cookie-name",
+			Value: encoded,
+			Path:  "/",
+		}
+		http.SetCookie(w, cookie)
+	}
+}
+```
+
+Later, use the same SecureCookie instance to decode and validate a cookie
+value:
+
+```go
+func ReadCookieHandler(w http.ResponseWriter, r *http.Request) {
+	if cookie, err := r.Cookie("cookie-name"); err == nil {
+		value := make(map[string]string)
+		if err = s2.Decode("cookie-name", cookie.Value, &value); err == nil {
+			fmt.Fprintf(w, "The value of foo is %q", value["foo"])
+		}
+	}
+}
+```
+
+We stored a map[string]string, but secure cookies can hold any value that
+can be encoded using `encoding/gob`. To store custom types, they must be
+registered first using gob.Register(). For basic types this is not needed;
+it works out of the box. An optional JSON encoder that uses `encoding/json` is
+available for types compatible with JSON.
+
+## License
+
+BSD licensed. See the LICENSE file for details.
diff --git a/vendor/github.com/gorilla/securecookie/doc.go b/vendor/github.com/gorilla/securecookie/doc.go
new file mode 100644
index 0000000..ae89408
--- /dev/null
+++ b/vendor/github.com/gorilla/securecookie/doc.go
@@ -0,0 +1,61 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package securecookie encodes and decodes authenticated and optionally
+encrypted cookie values.
+
+Secure cookies can't be forged, because their values are validated using HMAC.
+When encrypted, the content is also inaccessible to malicious eyes.
+
+To use it, first create a new SecureCookie instance:
+
+	var hashKey = []byte("very-secret")
+	var blockKey = []byte("a-lot-secret")
+	var s = securecookie.New(hashKey, blockKey)
+
+The hashKey is required, used to authenticate the cookie value using HMAC.
+It is recommended to use a key with 32 or 64 bytes.
+
+The blockKey is optional, used to encrypt the cookie value -- set it to nil
+to not use encryption. If set, the length must correspond to the block size
+of the encryption algorithm. For AES, used by default, valid lengths are
+16, 24, or 32 bytes to select AES-128, AES-192, or AES-256.
+
+Strong keys can be created using the convenience function GenerateRandomKey().
+
+Once a SecureCookie instance is set, use it to encode a cookie value:
+
+	func SetCookieHandler(w http.ResponseWriter, r *http.Request) {
+		value := map[string]string{
+			"foo": "bar",
+		}
+		if encoded, err := s.Encode("cookie-name", value); err == nil {
+			cookie := &http.Cookie{
+				Name:  "cookie-name",
+				Value: encoded,
+				Path:  "/",
+			}
+			http.SetCookie(w, cookie)
+		}
+	}
+
+Later, use the same SecureCookie instance to decode and validate a cookie
+value:
+
+	func ReadCookieHandler(w http.ResponseWriter, r *http.Request) {
+		if cookie, err := r.Cookie("cookie-name"); err == nil {
+			value := make(map[string]string)
+			if err = s2.Decode("cookie-name", cookie.Value, &value); err == nil {
+				fmt.Fprintf(w, "The value of foo is %q", value["foo"])
+			}
+		}
+	}
+
+We stored a map[string]string, but secure cookies can hold any value that
+can be encoded using encoding/gob. To store custom types, they must be
+registered first using gob.Register(). For basic types this is not needed;
+it works out of the box.
+*/
+package securecookie
diff --git a/vendor/github.com/gorilla/securecookie/fuzz.go b/vendor/github.com/gorilla/securecookie/fuzz.go
new file mode 100644
index 0000000..e4d0534
--- /dev/null
+++ b/vendor/github.com/gorilla/securecookie/fuzz.go
@@ -0,0 +1,25 @@
+// +build gofuzz
+
+package securecookie
+
+var hashKey = []byte("very-secret12345")
+var blockKey = []byte("a-lot-secret1234")
+var s = New(hashKey, blockKey)
+
+type Cookie struct {
+	B bool
+	I int
+	S string
+}
+
+func Fuzz(data []byte) int {
+	datas := string(data)
+	var c Cookie
+	if err := s.Decode("fuzz", datas, &c); err != nil {
+		return 0
+	}
+	if _, err := s.Encode("fuzz", c); err != nil {
+		panic(err)
+	}
+	return 1
+}
diff --git a/vendor/github.com/gorilla/securecookie/securecookie.go b/vendor/github.com/gorilla/securecookie/securecookie.go
new file mode 100644
index 0000000..83dd606
--- /dev/null
+++ b/vendor/github.com/gorilla/securecookie/securecookie.go
@@ -0,0 +1,646 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package securecookie
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/hmac"
+	"crypto/rand"
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/base64"
+	"encoding/gob"
+	"encoding/json"
+	"fmt"
+	"hash"
+	"io"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Error is the interface of all errors returned by functions in this library.
+type Error interface {
+	error
+
+	// IsUsage returns true for errors indicating the client code probably
+	// uses this library incorrectly.  For example, the client may have
+	// failed to provide a valid hash key, or may have failed to configure
+	// the Serializer adequately for encoding value.
+	IsUsage() bool
+
+	// IsDecode returns true for errors indicating that a cookie could not
+	// be decoded and validated.  Since cookies are usually untrusted
+	// user-provided input, errors of this type should be expected.
+	// Usually, the proper action is simply to reject the request.
+	IsDecode() bool
+
+	// IsInternal returns true for unexpected errors occurring in the
+	// securecookie implementation.
+	IsInternal() bool
+
+	// Cause, if it returns a non-nil value, indicates that this error was
+	// propagated from some underlying library.  If this method returns nil,
+	// this error was raised directly by this library.
+	//
+	// Cause is provided principally for debugging/logging purposes; it is
+	// rare that application logic should perform meaningfully different
+	// logic based on Cause.  See, for example, the caveats described on
+	// (MultiError).Cause().
+	Cause() error
+}
+
+// errorType is a bitmask giving the error type(s) of an cookieError value.
+type errorType int
+
+const (
+	usageError = errorType(1 << iota)
+	decodeError
+	internalError
+)
+
+type cookieError struct {
+	typ   errorType
+	msg   string
+	cause error
+}
+
+func (e cookieError) IsUsage() bool    { return (e.typ & usageError) != 0 }
+func (e cookieError) IsDecode() bool   { return (e.typ & decodeError) != 0 }
+func (e cookieError) IsInternal() bool { return (e.typ & internalError) != 0 }
+
+func (e cookieError) Cause() error { return e.cause }
+
+func (e cookieError) Error() string {
+	parts := []string{"securecookie: "}
+	if e.msg == "" {
+		parts = append(parts, "error")
+	} else {
+		parts = append(parts, e.msg)
+	}
+	if c := e.Cause(); c != nil {
+		parts = append(parts, " - caused by: ", c.Error())
+	}
+	return strings.Join(parts, "")
+}
+
+var (
+	errGeneratingIV = cookieError{typ: internalError, msg: "failed to generate random iv"}
+
+	errNoCodecs            = cookieError{typ: usageError, msg: "no codecs provided"}
+	errHashKeyNotSet       = cookieError{typ: usageError, msg: "hash key is not set"}
+	errBlockKeyNotSet      = cookieError{typ: usageError, msg: "block key is not set"}
+	errEncodedValueTooLong = cookieError{typ: usageError, msg: "the value is too long"}
+
+	errValueToDecodeTooLong = cookieError{typ: decodeError, msg: "the value is too long"}
+	errTimestampInvalid     = cookieError{typ: decodeError, msg: "invalid timestamp"}
+	errTimestampTooNew      = cookieError{typ: decodeError, msg: "timestamp is too new"}
+	errTimestampExpired     = cookieError{typ: decodeError, msg: "expired timestamp"}
+	errDecryptionFailed     = cookieError{typ: decodeError, msg: "the value could not be decrypted"}
+	errValueNotByte         = cookieError{typ: decodeError, msg: "value not a []byte."}
+
+	// ErrMacInvalid indicates that cookie decoding failed because the HMAC
+	// could not be extracted and verified.  Direct use of this error
+	// variable is deprecated; it is public only for legacy compatibility,
+	// and may be privatized in the future, as it is rarely useful to
+	// distinguish between this error and other Error implementations.
+	ErrMacInvalid = cookieError{typ: decodeError, msg: "the value is not valid"}
+)
+
+// Codec defines an interface to encode and decode cookie values.
+type Codec interface {
+	Encode(name string, value interface{}) (string, error)
+	Decode(name, value string, dst interface{}) error
+}
+
+// New returns a new SecureCookie.
+//
+// hashKey is required, used to authenticate values using HMAC. Create it using
+// GenerateRandomKey(). It is recommended to use a key with 32 or 64 bytes.
+//
+// blockKey is optional, used to encrypt values. Create it using
+// GenerateRandomKey(). The key length must correspond to the block size
+// of the encryption algorithm. For AES, used by default, valid lengths are
+// 16, 24, or 32 bytes to select AES-128, AES-192, or AES-256.
+// The default encoder used for cookie serialization is encoding/gob.
+//
+// Note that keys created using GenerateRandomKey() are not automatically
+// persisted. New keys will be created when the application is restarted, and
+// previously issued cookies will not be able to be decoded.
+func New(hashKey, blockKey []byte) *SecureCookie {
+	s := &SecureCookie{
+		hashKey:   hashKey,
+		blockKey:  blockKey,
+		hashFunc:  sha256.New,
+		maxAge:    86400 * 30,
+		maxLength: 4096,
+		sz:        GobEncoder{},
+	}
+	if hashKey == nil {
+		s.err = errHashKeyNotSet
+	}
+	if blockKey != nil {
+		s.BlockFunc(aes.NewCipher)
+	}
+	return s
+}
+
+// SecureCookie encodes and decodes authenticated and optionally encrypted
+// cookie values.
+type SecureCookie struct {
+	hashKey   []byte
+	hashFunc  func() hash.Hash
+	blockKey  []byte
+	block     cipher.Block
+	maxLength int
+	maxAge    int64
+	minAge    int64
+	err       error
+	sz        Serializer
+	// For testing purposes, the function that returns the current timestamp.
+	// If not set, it will use time.Now().UTC().Unix().
+	timeFunc func() int64
+}
+
+// Serializer provides an interface for providing custom serializers for cookie
+// values.
+type Serializer interface {
+	Serialize(src interface{}) ([]byte, error)
+	Deserialize(src []byte, dst interface{}) error
+}
+
+// GobEncoder encodes cookie values using encoding/gob. This is the simplest
+// encoder and can handle complex types via gob.Register.
+type GobEncoder struct{}
+
+// JSONEncoder encodes cookie values using encoding/json. Users who wish to
+// encode complex types need to satisfy the json.Marshaller and
+// json.Unmarshaller interfaces.
+type JSONEncoder struct{}
+
+// NopEncoder does not encode cookie values, and instead simply accepts a []byte
+// (as an interface{}) and returns a []byte. This is particularly useful when
+// you encoding an object upstream and do not wish to re-encode it.
+type NopEncoder struct{}
+
+// MaxLength restricts the maximum length, in bytes, for the cookie value.
+//
+// Default is 4096, which is the maximum value accepted by Internet Explorer.
+func (s *SecureCookie) MaxLength(value int) *SecureCookie {
+	s.maxLength = value
+	return s
+}
+
+// MaxAge restricts the maximum age, in seconds, for the cookie value.
+//
+// Default is 86400 * 30. Set it to 0 for no restriction.
+func (s *SecureCookie) MaxAge(value int) *SecureCookie {
+	s.maxAge = int64(value)
+	return s
+}
+
+// MinAge restricts the minimum age, in seconds, for the cookie value.
+//
+// Default is 0 (no restriction).
+func (s *SecureCookie) MinAge(value int) *SecureCookie {
+	s.minAge = int64(value)
+	return s
+}
+
+// HashFunc sets the hash function used to create HMAC.
+//
+// Default is crypto/sha256.New.
+func (s *SecureCookie) HashFunc(f func() hash.Hash) *SecureCookie {
+	s.hashFunc = f
+	return s
+}
+
+// BlockFunc sets the encryption function used to create a cipher.Block.
+//
+// Default is crypto/aes.New.
+func (s *SecureCookie) BlockFunc(f func([]byte) (cipher.Block, error)) *SecureCookie {
+	if s.blockKey == nil {
+		s.err = errBlockKeyNotSet
+	} else if block, err := f(s.blockKey); err == nil {
+		s.block = block
+	} else {
+		s.err = cookieError{cause: err, typ: usageError}
+	}
+	return s
+}
+
+// Encoding sets the encoding/serialization method for cookies.
+//
+// Default is encoding/gob.  To encode special structures using encoding/gob,
+// they must be registered first using gob.Register().
+func (s *SecureCookie) SetSerializer(sz Serializer) *SecureCookie {
+	s.sz = sz
+
+	return s
+}
+
+// Encode encodes a cookie value.
+//
+// It serializes, optionally encrypts, signs with a message authentication code,
+// and finally encodes the value.
+//
+// The name argument is the cookie name. It is stored with the encoded value.
+// The value argument is the value to be encoded. It can be any value that can
+// be encoded using the currently selected serializer; see SetSerializer().
+//
+// It is the client's responsibility to ensure that value, when encoded using
+// the current serialization/encryption settings on s and then base64-encoded,
+// is shorter than the maximum permissible length.
+func (s *SecureCookie) Encode(name string, value interface{}) (string, error) {
+	if s.err != nil {
+		return "", s.err
+	}
+	if s.hashKey == nil {
+		s.err = errHashKeyNotSet
+		return "", s.err
+	}
+	var err error
+	var b []byte
+	// 1. Serialize.
+	if b, err = s.sz.Serialize(value); err != nil {
+		return "", cookieError{cause: err, typ: usageError}
+	}
+	// 2. Encrypt (optional).
+	if s.block != nil {
+		if b, err = encrypt(s.block, b); err != nil {
+			return "", cookieError{cause: err, typ: usageError}
+		}
+	}
+	b = encode(b)
+	// 3. Create MAC for "name|date|value". Extra pipe to be used later.
+	b = []byte(fmt.Sprintf("%s|%d|%s|", name, s.timestamp(), b))
+	mac := createMac(hmac.New(s.hashFunc, s.hashKey), b[:len(b)-1])
+	// Append mac, remove name.
+	b = append(b, mac...)[len(name)+1:]
+	// 4. Encode to base64.
+	b = encode(b)
+	// 5. Check length.
+	if s.maxLength != 0 && len(b) > s.maxLength {
+		return "", errEncodedValueTooLong
+	}
+	// Done.
+	return string(b), nil
+}
+
+// Decode decodes a cookie value.
+//
+// It decodes, verifies a message authentication code, optionally decrypts and
+// finally deserializes the value.
+//
+// The name argument is the cookie name. It must be the same name used when
+// it was stored. The value argument is the encoded cookie value. The dst
+// argument is where the cookie will be decoded. It must be a pointer.
+func (s *SecureCookie) Decode(name, value string, dst interface{}) error {
+	if s.err != nil {
+		return s.err
+	}
+	if s.hashKey == nil {
+		s.err = errHashKeyNotSet
+		return s.err
+	}
+	// 1. Check length.
+	if s.maxLength != 0 && len(value) > s.maxLength {
+		return errValueToDecodeTooLong
+	}
+	// 2. Decode from base64.
+	b, err := decode([]byte(value))
+	if err != nil {
+		return err
+	}
+	// 3. Verify MAC. Value is "date|value|mac".
+	parts := bytes.SplitN(b, []byte("|"), 3)
+	if len(parts) != 3 {
+		return ErrMacInvalid
+	}
+	h := hmac.New(s.hashFunc, s.hashKey)
+	b = append([]byte(name+"|"), b[:len(b)-len(parts[2])-1]...)
+	if err = verifyMac(h, b, parts[2]); err != nil {
+		return err
+	}
+	// 4. Verify date ranges.
+	var t1 int64
+	if t1, err = strconv.ParseInt(string(parts[0]), 10, 64); err != nil {
+		return errTimestampInvalid
+	}
+	t2 := s.timestamp()
+	if s.minAge != 0 && t1 > t2-s.minAge {
+		return errTimestampTooNew
+	}
+	if s.maxAge != 0 && t1 < t2-s.maxAge {
+		return errTimestampExpired
+	}
+	// 5. Decrypt (optional).
+	b, err = decode(parts[1])
+	if err != nil {
+		return err
+	}
+	if s.block != nil {
+		if b, err = decrypt(s.block, b); err != nil {
+			return err
+		}
+	}
+	// 6. Deserialize.
+	if err = s.sz.Deserialize(b, dst); err != nil {
+		return cookieError{cause: err, typ: decodeError}
+	}
+	// Done.
+	return nil
+}
+
+// timestamp returns the current timestamp, in seconds.
+//
+// For testing purposes, the function that generates the timestamp can be
+// overridden. If not set, it will return time.Now().UTC().Unix().
+func (s *SecureCookie) timestamp() int64 {
+	if s.timeFunc == nil {
+		return time.Now().UTC().Unix()
+	}
+	return s.timeFunc()
+}
+
+// Authentication -------------------------------------------------------------
+
+// createMac creates a message authentication code (MAC).
+func createMac(h hash.Hash, value []byte) []byte {
+	h.Write(value)
+	return h.Sum(nil)
+}
+
+// verifyMac verifies that a message authentication code (MAC) is valid.
+func verifyMac(h hash.Hash, value []byte, mac []byte) error {
+	mac2 := createMac(h, value)
+	// Check that both MACs are of equal length, as subtle.ConstantTimeCompare
+	// does not do this prior to Go 1.4.
+	if len(mac) == len(mac2) && subtle.ConstantTimeCompare(mac, mac2) == 1 {
+		return nil
+	}
+	return ErrMacInvalid
+}
+
+// Encryption -----------------------------------------------------------------
+
+// encrypt encrypts a value using the given block in counter mode.
+//
+// A random initialization vector (http://goo.gl/zF67k) with the length of the
+// block size is prepended to the resulting ciphertext.
+func encrypt(block cipher.Block, value []byte) ([]byte, error) {
+	iv := GenerateRandomKey(block.BlockSize())
+	if iv == nil {
+		return nil, errGeneratingIV
+	}
+	// Encrypt it.
+	stream := cipher.NewCTR(block, iv)
+	stream.XORKeyStream(value, value)
+	// Return iv + ciphertext.
+	return append(iv, value...), nil
+}
+
+// decrypt decrypts a value using the given block in counter mode.
+//
+// The value to be decrypted must be prepended by a initialization vector
+// (http://goo.gl/zF67k) with the length of the block size.
+func decrypt(block cipher.Block, value []byte) ([]byte, error) {
+	size := block.BlockSize()
+	if len(value) > size {
+		// Extract iv.
+		iv := value[:size]
+		// Extract ciphertext.
+		value = value[size:]
+		// Decrypt it.
+		stream := cipher.NewCTR(block, iv)
+		stream.XORKeyStream(value, value)
+		return value, nil
+	}
+	return nil, errDecryptionFailed
+}
+
+// Serialization --------------------------------------------------------------
+
+// Serialize encodes a value using gob.
+func (e GobEncoder) Serialize(src interface{}) ([]byte, error) {
+	buf := new(bytes.Buffer)
+	enc := gob.NewEncoder(buf)
+	if err := enc.Encode(src); err != nil {
+		return nil, cookieError{cause: err, typ: usageError}
+	}
+	return buf.Bytes(), nil
+}
+
+// Deserialize decodes a value using gob.
+func (e GobEncoder) Deserialize(src []byte, dst interface{}) error {
+	dec := gob.NewDecoder(bytes.NewBuffer(src))
+	if err := dec.Decode(dst); err != nil {
+		return cookieError{cause: err, typ: decodeError}
+	}
+	return nil
+}
+
+// Serialize encodes a value using encoding/json.
+func (e JSONEncoder) Serialize(src interface{}) ([]byte, error) {
+	buf := new(bytes.Buffer)
+	enc := json.NewEncoder(buf)
+	if err := enc.Encode(src); err != nil {
+		return nil, cookieError{cause: err, typ: usageError}
+	}
+	return buf.Bytes(), nil
+}
+
+// Deserialize decodes a value using encoding/json.
+func (e JSONEncoder) Deserialize(src []byte, dst interface{}) error {
+	dec := json.NewDecoder(bytes.NewReader(src))
+	if err := dec.Decode(dst); err != nil {
+		return cookieError{cause: err, typ: decodeError}
+	}
+	return nil
+}
+
+// Serialize passes a []byte through as-is.
+func (e NopEncoder) Serialize(src interface{}) ([]byte, error) {
+	if b, ok := src.([]byte); ok {
+		return b, nil
+	}
+
+	return nil, errValueNotByte
+}
+
+// Deserialize passes a []byte through as-is.
+func (e NopEncoder) Deserialize(src []byte, dst interface{}) error {
+	if _, ok := dst.([]byte); ok {
+		dst = src
+		return nil
+	}
+
+	return errValueNotByte
+}
+
+// Encoding -------------------------------------------------------------------
+
+// encode encodes a value using base64.
+func encode(value []byte) []byte {
+	encoded := make([]byte, base64.URLEncoding.EncodedLen(len(value)))
+	base64.URLEncoding.Encode(encoded, value)
+	return encoded
+}
+
+// decode decodes a cookie using base64.
+func decode(value []byte) ([]byte, error) {
+	decoded := make([]byte, base64.URLEncoding.DecodedLen(len(value)))
+	b, err := base64.URLEncoding.Decode(decoded, value)
+	if err != nil {
+		return nil, cookieError{cause: err, typ: decodeError, msg: "base64 decode failed"}
+	}
+	return decoded[:b], nil
+}
+
+// Helpers --------------------------------------------------------------------
+
+// GenerateRandomKey creates a random key with the given length in bytes.
+// On failure, returns nil.
+//
+// Callers should explicitly check for the possibility of a nil return, treat
+// it as a failure of the system random number generator, and not continue.
+func GenerateRandomKey(length int) []byte {
+	k := make([]byte, length)
+	if _, err := io.ReadFull(rand.Reader, k); err != nil {
+		return nil
+	}
+	return k
+}
+
+// CodecsFromPairs returns a slice of SecureCookie instances.
+//
+// It is a convenience function to create a list of codecs for key rotation. Note
+// that the generated Codecs will have the default options applied: callers
+// should iterate over each Codec and type-assert the underlying *SecureCookie to
+// change these.
+//
+// Example:
+//
+//      codecs := securecookie.CodecsFromPairs(
+//           []byte("new-hash-key"),
+//           []byte("new-block-key"),
+//           []byte("old-hash-key"),
+//           []byte("old-block-key"),
+//       )
+//
+//      // Modify each instance.
+//      for _, s := range codecs {
+//             if cookie, ok := s.(*securecookie.SecureCookie); ok {
+//                 cookie.MaxAge(86400 * 7)
+//                 cookie.SetSerializer(securecookie.JSONEncoder{})
+//                 cookie.HashFunc(sha512.New512_256)
+//             }
+//         }
+//
+func CodecsFromPairs(keyPairs ...[]byte) []Codec {
+	codecs := make([]Codec, len(keyPairs)/2+len(keyPairs)%2)
+	for i := 0; i < len(keyPairs); i += 2 {
+		var blockKey []byte
+		if i+1 < len(keyPairs) {
+			blockKey = keyPairs[i+1]
+		}
+		codecs[i/2] = New(keyPairs[i], blockKey)
+	}
+	return codecs
+}
+
+// EncodeMulti encodes a cookie value using a group of codecs.
+//
+// The codecs are tried in order. Multiple codecs are accepted to allow
+// key rotation.
+//
+// On error, may return a MultiError.
+func EncodeMulti(name string, value interface{}, codecs ...Codec) (string, error) {
+	if len(codecs) == 0 {
+		return "", errNoCodecs
+	}
+
+	var errors MultiError
+	for _, codec := range codecs {
+		encoded, err := codec.Encode(name, value)
+		if err == nil {
+			return encoded, nil
+		}
+		errors = append(errors, err)
+	}
+	return "", errors
+}
+
+// DecodeMulti decodes a cookie value using a group of codecs.
+//
+// The codecs are tried in order. Multiple codecs are accepted to allow
+// key rotation.
+//
+// On error, may return a MultiError.
+func DecodeMulti(name string, value string, dst interface{}, codecs ...Codec) error {
+	if len(codecs) == 0 {
+		return errNoCodecs
+	}
+
+	var errors MultiError
+	for _, codec := range codecs {
+		err := codec.Decode(name, value, dst)
+		if err == nil {
+			return nil
+		}
+		errors = append(errors, err)
+	}
+	return errors
+}
+
+// MultiError groups multiple errors.
+type MultiError []error
+
+func (m MultiError) IsUsage() bool    { return m.any(func(e Error) bool { return e.IsUsage() }) }
+func (m MultiError) IsDecode() bool   { return m.any(func(e Error) bool { return e.IsDecode() }) }
+func (m MultiError) IsInternal() bool { return m.any(func(e Error) bool { return e.IsInternal() }) }
+
+// Cause returns nil for MultiError; there is no unique underlying cause in the
+// general case.
+//
+// Note: we could conceivably return a non-nil Cause only when there is exactly
+// one child error with a Cause.  However, it would be brittle for client code
+// to rely on the arity of causes inside a MultiError, so we have opted not to
+// provide this functionality.  Clients which really wish to access the Causes
+// of the underlying errors are free to iterate through the errors themselves.
+func (m MultiError) Cause() error { return nil }
+
+func (m MultiError) Error() string {
+	s, n := "", 0
+	for _, e := range m {
+		if e != nil {
+			if n == 0 {
+				s = e.Error()
+			}
+			n++
+		}
+	}
+	switch n {
+	case 0:
+		return "(0 errors)"
+	case 1:
+		return s
+	case 2:
+		return s + " (and 1 other error)"
+	}
+	return fmt.Sprintf("%s (and %d other errors)", s, n-1)
+}
+
+// any returns true if any element of m is an Error for which pred returns true.
+func (m MultiError) any(pred func(Error) bool) bool {
+	for _, e := range m {
+		if ourErr, ok := e.(Error); ok && pred(ourErr) {
+			return true
+		}
+	}
+	return false
+}
diff --git a/vendor/github.com/gorilla/sessions/LICENSE b/vendor/github.com/gorilla/sessions/LICENSE
new file mode 100644
index 0000000..0e5fb87
--- /dev/null
+++ b/vendor/github.com/gorilla/sessions/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+	 * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+	 * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+	 * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/gorilla/sessions/README.md b/vendor/github.com/gorilla/sessions/README.md
new file mode 100644
index 0000000..2779904
--- /dev/null
+++ b/vendor/github.com/gorilla/sessions/README.md
@@ -0,0 +1,79 @@
+sessions
+========
+[![GoDoc](https://godoc.org/github.com/gorilla/sessions?status.svg)](https://godoc.org/github.com/gorilla/sessions) [![Build Status](https://travis-ci.org/gorilla/sessions.png?branch=master)](https://travis-ci.org/gorilla/sessions)
+
+gorilla/sessions provides cookie and filesystem sessions and infrastructure for
+custom session backends.
+
+The key features are:
+
+* Simple API: use it as an easy way to set signed (and optionally
+  encrypted) cookies.
+* Built-in backends to store sessions in cookies or the filesystem.
+* Flash messages: session values that last until read.
+* Convenient way to switch session persistency (aka "remember me") and set
+  other attributes.
+* Mechanism to rotate authentication and encryption keys.
+* Multiple sessions per request, even using different backends.
+* Interfaces and infrastructure for custom session backends: sessions from
+  different stores can be retrieved and batch-saved using a common API.
+
+Let's start with an example that shows the sessions API in a nutshell:
+
+```go
+	import (
+		"net/http"
+		"github.com/gorilla/sessions"
+	)
+
+	var store = sessions.NewCookieStore([]byte("something-very-secret"))
+
+	func MyHandler(w http.ResponseWriter, r *http.Request) {
+		// Get a session. We're ignoring the error resulted from decoding an
+		// existing session: Get() always returns a session, even if empty.
+		session, _ := store.Get(r, "session-name")
+		// Set some session values.
+		session.Values["foo"] = "bar"
+		session.Values[42] = 43
+		// Save it before we write to the response/return from the handler.
+		session.Save(r, w)
+	}
+```
+
+First we initialize a session store calling `NewCookieStore()` and passing a
+secret key used to authenticate the session. Inside the handler, we call
+`store.Get()` to retrieve an existing session or a new one. Then we set some
+session values in session.Values, which is a `map[interface{}]interface{}`.
+And finally we call `session.Save()` to save the session in the response.
+
+Important Note: If you aren't using gorilla/mux, you need to wrap your handlers
+with
+[`context.ClearHandler`](http://www.gorillatoolkit.org/pkg/context#ClearHandler)
+as or else you will leak memory! An easy way to do this is to wrap the top-level
+mux when calling http.ListenAndServe:
+
+More examples are available [on the Gorilla
+website](http://www.gorillatoolkit.org/pkg/sessions).
+
+## Store Implementations
+
+Other implementations of the `sessions.Store` interface:
+
+* [github.com/starJammer/gorilla-sessions-arangodb](https://github.com/starJammer/gorilla-sessions-arangodb) - ArangoDB
+* [github.com/yosssi/boltstore](https://github.com/yosssi/boltstore) - Bolt
+* [github.com/srinathgs/couchbasestore](https://github.com/srinathgs/couchbasestore) - Couchbase
+* [github.com/denizeren/dynamostore](https://github.com/denizeren/dynamostore) - Dynamodb on AWS
+* [github.com/bradleypeabody/gorilla-sessions-memcache](https://github.com/bradleypeabody/gorilla-sessions-memcache) - Memcache
+* [github.com/hnakamur/gaesessions](https://github.com/hnakamur/gaesessions) - Memcache on GAE
+* [github.com/kidstuff/mongostore](https://github.com/kidstuff/mongostore) - MongoDB
+* [github.com/srinathgs/mysqlstore](https://github.com/srinathgs/mysqlstore) - MySQL
+* [github.com/antonlindstrom/pgstore](https://github.com/antonlindstrom/pgstore) - PostgreSQL
+* [github.com/boj/redistore](https://github.com/boj/redistore) - Redis
+* [github.com/boj/rethinkstore](https://github.com/boj/rethinkstore) - RethinkDB
+* [github.com/boj/riakstore](https://github.com/boj/riakstore) - Riak
+* [github.com/michaeljs1990/sqlitestore](https://github.com/michaeljs1990/sqlitestore) - SQLite
+* [github.com/wader/gormstore](https://github.com/wader/gormstore) - GORM (MySQL, PostgreSQL, SQLite)
+
+## License
+
+BSD licensed. See the LICENSE file for details.
diff --git a/vendor/github.com/gorilla/sessions/doc.go b/vendor/github.com/gorilla/sessions/doc.go
new file mode 100644
index 0000000..af8c89a
--- /dev/null
+++ b/vendor/github.com/gorilla/sessions/doc.go
@@ -0,0 +1,199 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package gorilla/sessions provides cookie and filesystem sessions and
+infrastructure for custom session backends.
+
+The key features are:
+
+	* Simple API: use it as an easy way to set signed (and optionally
+	  encrypted) cookies.
+	* Built-in backends to store sessions in cookies or the filesystem.
+	* Flash messages: session values that last until read.
+	* Convenient way to switch session persistency (aka "remember me") and set
+	  other attributes.
+	* Mechanism to rotate authentication and encryption keys.
+	* Multiple sessions per request, even using different backends.
+	* Interfaces and infrastructure for custom session backends: sessions from
+	  different stores can be retrieved and batch-saved using a common API.
+
+Let's start with an example that shows the sessions API in a nutshell:
+
+	import (
+		"net/http"
+		"github.com/gorilla/sessions"
+	)
+
+	var store = sessions.NewCookieStore([]byte("something-very-secret"))
+
+	func MyHandler(w http.ResponseWriter, r *http.Request) {
+		// Get a session. We're ignoring the error resulted from decoding an
+		// existing session: Get() always returns a session, even if empty.
+		session, err := store.Get(r, "session-name")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// Set some session values.
+		session.Values["foo"] = "bar"
+		session.Values[42] = 43
+		// Save it before we write to the response/return from the handler.
+		session.Save(r, w)
+	}
+
+First we initialize a session store calling NewCookieStore() and passing a
+secret key used to authenticate the session. Inside the handler, we call
+store.Get() to retrieve an existing session or a new one. Then we set some
+session values in session.Values, which is a map[interface{}]interface{}.
+And finally we call session.Save() to save the session in the response.
+
+Note that in production code, we should check for errors when calling
+session.Save(r, w), and either display an error message or otherwise handle it.
+
+Save must be called before writing to the response, otherwise the session
+cookie will not be sent to the client.
+
+Important Note: If you aren't using gorilla/mux, you need to wrap your handlers
+with context.ClearHandler as or else you will leak memory! An easy way to do this
+is to wrap the top-level mux when calling http.ListenAndServe:
+
+    http.ListenAndServe(":8080", context.ClearHandler(http.DefaultServeMux))
+
+The ClearHandler function is provided by the gorilla/context package.
+
+That's all you need to know for the basic usage. Let's take a look at other
+options, starting with flash messages.
+
+Flash messages are session values that last until read. The term appeared with
+Ruby On Rails a few years back. When we request a flash message, it is removed
+from the session. To add a flash, call session.AddFlash(), and to get all
+flashes, call session.Flashes(). Here is an example:
+
+	func MyHandler(w http.ResponseWriter, r *http.Request) {
+		// Get a session.
+		session, err := store.Get(r, "session-name")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// Get the previously flashes, if any.
+		if flashes := session.Flashes(); len(flashes) > 0 {
+			// Use the flash values.
+		} else {
+			// Set a new flash.
+			session.AddFlash("Hello, flash messages world!")
+		}
+		session.Save(r, w)
+	}
+
+Flash messages are useful to set information to be read after a redirection,
+like after form submissions.
+
+There may also be cases where you want to store a complex datatype within a
+session, such as a struct. Sessions are serialised using the encoding/gob package,
+so it is easy to register new datatypes for storage in sessions:
+
+	import(
+		"encoding/gob"
+		"github.com/gorilla/sessions"
+	)
+
+	type Person struct {
+		FirstName	string
+		LastName 	string
+		Email		string
+		Age			int
+	}
+
+	type M map[string]interface{}
+
+	func init() {
+
+		gob.Register(&Person{})
+		gob.Register(&M{})
+	}
+
+As it's not possible to pass a raw type as a parameter to a function, gob.Register()
+relies on us passing it a value of the desired type. In the example above we've passed
+it a pointer to a struct and a pointer to a custom type representing a
+map[string]interface. (We could have passed non-pointer values if we wished.) This will
+then allow us to serialise/deserialise values of those types to and from our sessions.
+
+Note that because session values are stored in a map[string]interface{}, there's
+a need to type-assert data when retrieving it. We'll use the Person struct we registered above:
+
+	func MyHandler(w http.ResponseWriter, r *http.Request) {
+		session, err := store.Get(r, "session-name")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// Retrieve our struct and type-assert it
+		val := session.Values["person"]
+		var person = &Person{}
+		if person, ok := val.(*Person); !ok {
+			// Handle the case that it's not an expected type
+		}
+
+		// Now we can use our person object
+	}
+
+By default, session cookies last for a month. This is probably too long for
+some cases, but it is easy to change this and other attributes during
+runtime. Sessions can be configured individually or the store can be
+configured and then all sessions saved using it will use that configuration.
+We access session.Options or store.Options to set a new configuration. The
+fields are basically a subset of http.Cookie fields. Let's change the
+maximum age of a session to one week:
+
+	session.Options = &sessions.Options{
+		Path:     "/",
+		MaxAge:   86400 * 7,
+		HttpOnly: true,
+	}
+
+Sometimes we may want to change authentication and/or encryption keys without
+breaking existing sessions. The CookieStore supports key rotation, and to use
+it you just need to set multiple authentication and encryption keys, in pairs,
+to be tested in order:
+
+	var store = sessions.NewCookieStore(
+		[]byte("new-authentication-key"),
+		[]byte("new-encryption-key"),
+		[]byte("old-authentication-key"),
+		[]byte("old-encryption-key"),
+	)
+
+New sessions will be saved using the first pair. Old sessions can still be
+read because the first pair will fail, and the second will be tested. This
+makes it easy to "rotate" secret keys and still be able to validate existing
+sessions. Note: for all pairs the encryption key is optional; set it to nil
+or omit it and and encryption won't be used.
+
+Multiple sessions can be used in the same request, even with different
+session backends. When this happens, calling Save() on each session
+individually would be cumbersome, so we have a way to save all sessions
+at once: it's sessions.Save(). Here's an example:
+
+	var store = sessions.NewCookieStore([]byte("something-very-secret"))
+
+	func MyHandler(w http.ResponseWriter, r *http.Request) {
+		// Get a session and set a value.
+		session1, _ := store.Get(r, "session-one")
+		session1.Values["foo"] = "bar"
+		// Get another session and set another value.
+		session2, _ := store.Get(r, "session-two")
+		session2.Values[42] = 43
+		// Save all sessions.
+		sessions.Save(r, w)
+	}
+
+This is possible because when we call Get() from a session store, it adds the
+session to a common registry. Save() uses it to save all registered sessions.
+*/
+package sessions
diff --git a/vendor/github.com/gorilla/sessions/lex.go b/vendor/github.com/gorilla/sessions/lex.go
new file mode 100644
index 0000000..4bbbe10
--- /dev/null
+++ b/vendor/github.com/gorilla/sessions/lex.go
@@ -0,0 +1,102 @@
+// This file contains code adapted from the Go standard library
+// https://github.com/golang/go/blob/39ad0fd0789872f9469167be7fe9578625ff246e/src/net/http/lex.go
+
+package sessions
+
+import "strings"
+
+var isTokenTable = [127]bool{
+	'!':  true,
+	'#':  true,
+	'$':  true,
+	'%':  true,
+	'&':  true,
+	'\'': true,
+	'*':  true,
+	'+':  true,
+	'-':  true,
+	'.':  true,
+	'0':  true,
+	'1':  true,
+	'2':  true,
+	'3':  true,
+	'4':  true,
+	'5':  true,
+	'6':  true,
+	'7':  true,
+	'8':  true,
+	'9':  true,
+	'A':  true,
+	'B':  true,
+	'C':  true,
+	'D':  true,
+	'E':  true,
+	'F':  true,
+	'G':  true,
+	'H':  true,
+	'I':  true,
+	'J':  true,
+	'K':  true,
+	'L':  true,
+	'M':  true,
+	'N':  true,
+	'O':  true,
+	'P':  true,
+	'Q':  true,
+	'R':  true,
+	'S':  true,
+	'T':  true,
+	'U':  true,
+	'W':  true,
+	'V':  true,
+	'X':  true,
+	'Y':  true,
+	'Z':  true,
+	'^':  true,
+	'_':  true,
+	'`':  true,
+	'a':  true,
+	'b':  true,
+	'c':  true,
+	'd':  true,
+	'e':  true,
+	'f':  true,
+	'g':  true,
+	'h':  true,
+	'i':  true,
+	'j':  true,
+	'k':  true,
+	'l':  true,
+	'm':  true,
+	'n':  true,
+	'o':  true,
+	'p':  true,
+	'q':  true,
+	'r':  true,
+	's':  true,
+	't':  true,
+	'u':  true,
+	'v':  true,
+	'w':  true,
+	'x':  true,
+	'y':  true,
+	'z':  true,
+	'|':  true,
+	'~':  true,
+}
+
+func isToken(r rune) bool {
+	i := int(r)
+	return i < len(isTokenTable) && isTokenTable[i]
+}
+
+func isNotToken(r rune) bool {
+	return !isToken(r)
+}
+
+func isCookieNameValid(raw string) bool {
+	if raw == "" {
+		return false
+	}
+	return strings.IndexFunc(raw, isNotToken) < 0
+}
diff --git a/vendor/github.com/gorilla/sessions/sessions.go b/vendor/github.com/gorilla/sessions/sessions.go
new file mode 100644
index 0000000..a837c08
--- /dev/null
+++ b/vendor/github.com/gorilla/sessions/sessions.go
@@ -0,0 +1,238 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sessions
+
+import (
+	"encoding/gob"
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/gorilla/context"
+)
+
+// Default flashes key.
+const flashesKey = "_flash"
+
+// Options --------------------------------------------------------------------
+
+// Options stores configuration for a session or session store.
+//
+// Fields are a subset of http.Cookie fields.
+type Options struct {
+	Path   string
+	Domain string
+	// MaxAge=0 means no 'Max-Age' attribute specified.
+	// MaxAge<0 means delete cookie now, equivalently 'Max-Age: 0'.
+	// MaxAge>0 means Max-Age attribute present and given in seconds.
+	MaxAge   int
+	Secure   bool
+	HttpOnly bool
+}
+
+// Session --------------------------------------------------------------------
+
+// NewSession is called by session stores to create a new session instance.
+func NewSession(store Store, name string) *Session {
+	return &Session{
+		Values: make(map[interface{}]interface{}),
+		store:  store,
+		name:   name,
+	}
+}
+
+// Session stores the values and optional configuration for a session.
+type Session struct {
+	ID      string
+	Values  map[interface{}]interface{}
+	Options *Options
+	IsNew   bool
+	store   Store
+	name    string
+}
+
+// Flashes returns a slice of flash messages from the session.
+//
+// A single variadic argument is accepted, and it is optional: it defines
+// the flash key. If not defined "_flash" is used by default.
+func (s *Session) Flashes(vars ...string) []interface{} {
+	var flashes []interface{}
+	key := flashesKey
+	if len(vars) > 0 {
+		key = vars[0]
+	}
+	if v, ok := s.Values[key]; ok {
+		// Drop the flashes and return it.
+		delete(s.Values, key)
+		flashes = v.([]interface{})
+	}
+	return flashes
+}
+
+// AddFlash adds a flash message to the session.
+//
+// A single variadic argument is accepted, and it is optional: it defines
+// the flash key. If not defined "_flash" is used by default.
+func (s *Session) AddFlash(value interface{}, vars ...string) {
+	key := flashesKey
+	if len(vars) > 0 {
+		key = vars[0]
+	}
+	var flashes []interface{}
+	if v, ok := s.Values[key]; ok {
+		flashes = v.([]interface{})
+	}
+	s.Values[key] = append(flashes, value)
+}
+
+// Save is a convenience method to save this session. It is the same as calling
+// store.Save(request, response, session). You should call Save before writing to
+// the response or returning from the handler.
+func (s *Session) Save(r *http.Request, w http.ResponseWriter) error {
+	return s.store.Save(r, w, s)
+}
+
+// Name returns the name used to register the session.
+func (s *Session) Name() string {
+	return s.name
+}
+
+// Store returns the session store used to register the session.
+func (s *Session) Store() Store {
+	return s.store
+}
+
+// Registry -------------------------------------------------------------------
+
+// sessionInfo stores a session tracked by the registry.
+type sessionInfo struct {
+	s *Session
+	e error
+}
+
+// contextKey is the type used to store the registry in the context.
+type contextKey int
+
+// registryKey is the key used to store the registry in the context.
+const registryKey contextKey = 0
+
+// GetRegistry returns a registry instance for the current request.
+func GetRegistry(r *http.Request) *Registry {
+	registry := context.Get(r, registryKey)
+	if registry != nil {
+		return registry.(*Registry)
+	}
+	newRegistry := &Registry{
+		request:  r,
+		sessions: make(map[string]sessionInfo),
+	}
+	context.Set(r, registryKey, newRegistry)
+	return newRegistry
+}
+
+// Registry stores sessions used during a request.
+type Registry struct {
+	request  *http.Request
+	sessions map[string]sessionInfo
+}
+
+// Get registers and returns a session for the given name and session store.
+//
+// It returns a new session if there are no sessions registered for the name.
+func (s *Registry) Get(store Store, name string) (session *Session, err error) {
+	if !isCookieNameValid(name) {
+		return nil, fmt.Errorf("sessions: invalid character in cookie name: %s", name)
+	}
+	if info, ok := s.sessions[name]; ok {
+		session, err = info.s, info.e
+	} else {
+		session, err = store.New(s.request, name)
+		session.name = name
+		s.sessions[name] = sessionInfo{s: session, e: err}
+	}
+	session.store = store
+	return
+}
+
+// Save saves all sessions registered for the current request.
+func (s *Registry) Save(w http.ResponseWriter) error {
+	var errMulti MultiError
+	for name, info := range s.sessions {
+		session := info.s
+		if session.store == nil {
+			errMulti = append(errMulti, fmt.Errorf(
+				"sessions: missing store for session %q", name))
+		} else if err := session.store.Save(s.request, w, session); err != nil {
+			errMulti = append(errMulti, fmt.Errorf(
+				"sessions: error saving session %q -- %v", name, err))
+		}
+	}
+	if errMulti != nil {
+		return errMulti
+	}
+	return nil
+}
+
+// Helpers --------------------------------------------------------------------
+
+func init() {
+	gob.Register([]interface{}{})
+}
+
+// Save saves all sessions used during the current request.
+func Save(r *http.Request, w http.ResponseWriter) error {
+	return GetRegistry(r).Save(w)
+}
+
+// NewCookie returns an http.Cookie with the options set. It also sets
+// the Expires field calculated based on the MaxAge value, for Internet
+// Explorer compatibility.
+func NewCookie(name, value string, options *Options) *http.Cookie {
+	cookie := &http.Cookie{
+		Name:     name,
+		Value:    value,
+		Path:     options.Path,
+		Domain:   options.Domain,
+		MaxAge:   options.MaxAge,
+		Secure:   options.Secure,
+		HttpOnly: options.HttpOnly,
+	}
+	if options.MaxAge > 0 {
+		d := time.Duration(options.MaxAge) * time.Second
+		cookie.Expires = time.Now().Add(d)
+	} else if options.MaxAge < 0 {
+		// Set it to the past to expire now.
+		cookie.Expires = time.Unix(1, 0)
+	}
+	return cookie
+}
+
+// Error ----------------------------------------------------------------------
+
+// MultiError stores multiple errors.
+//
+// Borrowed from the App Engine SDK.
+type MultiError []error
+
+func (m MultiError) Error() string {
+	s, n := "", 0
+	for _, e := range m {
+		if e != nil {
+			if n == 0 {
+				s = e.Error()
+			}
+			n++
+		}
+	}
+	switch n {
+	case 0:
+		return "(0 errors)"
+	case 1:
+		return s
+	case 2:
+		return s + " (and 1 other error)"
+	}
+	return fmt.Sprintf("%s (and %d other errors)", s, n-1)
+}
diff --git a/vendor/github.com/gorilla/sessions/store.go b/vendor/github.com/gorilla/sessions/store.go
new file mode 100644
index 0000000..ba3b9e9
--- /dev/null
+++ b/vendor/github.com/gorilla/sessions/store.go
@@ -0,0 +1,270 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sessions
+
+import (
+	"encoding/base32"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+
+	"github.com/gorilla/securecookie"
+)
+
+// Store is an interface for custom session stores.
+//
+// See CookieStore and FilesystemStore for examples.
+type Store interface {
+	// Get should return a cached session.
+	Get(r *http.Request, name string) (*Session, error)
+
+	// New should create and return a new session.
+	//
+	// Note that New should never return a nil session, even in the case of
+	// an error if using the Registry infrastructure to cache the session.
+	New(r *http.Request, name string) (*Session, error)
+
+	// Save should persist session to the underlying store implementation.
+	Save(r *http.Request, w http.ResponseWriter, s *Session) error
+}
+
+// CookieStore ----------------------------------------------------------------
+
+// NewCookieStore returns a new CookieStore.
+//
+// Keys are defined in pairs to allow key rotation, but the common case is
+// to set a single authentication key and optionally an encryption key.
+//
+// The first key in a pair is used for authentication and the second for
+// encryption. The encryption key can be set to nil or omitted in the last
+// pair, but the authentication key is required in all pairs.
+//
+// It is recommended to use an authentication key with 32 or 64 bytes.
+// The encryption key, if set, must be either 16, 24, or 32 bytes to select
+// AES-128, AES-192, or AES-256 modes.
+//
+// Use the convenience function securecookie.GenerateRandomKey() to create
+// strong keys.
+func NewCookieStore(keyPairs ...[]byte) *CookieStore {
+	cs := &CookieStore{
+		Codecs: securecookie.CodecsFromPairs(keyPairs...),
+		Options: &Options{
+			Path:   "/",
+			MaxAge: 86400 * 30,
+		},
+	}
+
+	cs.MaxAge(cs.Options.MaxAge)
+	return cs
+}
+
+// CookieStore stores sessions using secure cookies.
+type CookieStore struct {
+	Codecs  []securecookie.Codec
+	Options *Options // default configuration
+}
+
+// Get returns a session for the given name after adding it to the registry.
+//
+// It returns a new session if the sessions doesn't exist. Access IsNew on
+// the session to check if it is an existing session or a new one.
+//
+// It returns a new session and an error if the session exists but could
+// not be decoded.
+func (s *CookieStore) Get(r *http.Request, name string) (*Session, error) {
+	return GetRegistry(r).Get(s, name)
+}
+
+// New returns a session for the given name without adding it to the registry.
+//
+// The difference between New() and Get() is that calling New() twice will
+// decode the session data twice, while Get() registers and reuses the same
+// decoded session after the first call.
+func (s *CookieStore) New(r *http.Request, name string) (*Session, error) {
+	session := NewSession(s, name)
+	opts := *s.Options
+	session.Options = &opts
+	session.IsNew = true
+	var err error
+	if c, errCookie := r.Cookie(name); errCookie == nil {
+		err = securecookie.DecodeMulti(name, c.Value, &session.Values,
+			s.Codecs...)
+		if err == nil {
+			session.IsNew = false
+		}
+	}
+	return session, err
+}
+
+// Save adds a single session to the response.
+func (s *CookieStore) Save(r *http.Request, w http.ResponseWriter,
+	session *Session) error {
+	encoded, err := securecookie.EncodeMulti(session.Name(), session.Values,
+		s.Codecs...)
+	if err != nil {
+		return err
+	}
+	http.SetCookie(w, NewCookie(session.Name(), encoded, session.Options))
+	return nil
+}
+
+// MaxAge sets the maximum age for the store and the underlying cookie
+// implementation. Individual sessions can be deleted by setting Options.MaxAge
+// = -1 for that session.
+func (s *CookieStore) MaxAge(age int) {
+	s.Options.MaxAge = age
+
+	// Set the maxAge for each securecookie instance.
+	for _, codec := range s.Codecs {
+		if sc, ok := codec.(*securecookie.SecureCookie); ok {
+			sc.MaxAge(age)
+		}
+	}
+}
+
+// FilesystemStore ------------------------------------------------------------
+
+var fileMutex sync.RWMutex
+
+// NewFilesystemStore returns a new FilesystemStore.
+//
+// The path argument is the directory where sessions will be saved. If empty
+// it will use os.TempDir().
+//
+// See NewCookieStore() for a description of the other parameters.
+func NewFilesystemStore(path string, keyPairs ...[]byte) *FilesystemStore {
+	if path == "" {
+		path = os.TempDir()
+	}
+	fs := &FilesystemStore{
+		Codecs: securecookie.CodecsFromPairs(keyPairs...),
+		Options: &Options{
+			Path:   "/",
+			MaxAge: 86400 * 30,
+		},
+		path: path,
+	}
+
+	fs.MaxAge(fs.Options.MaxAge)
+	return fs
+}
+
+// FilesystemStore stores sessions in the filesystem.
+//
+// It also serves as a reference for custom stores.
+//
+// This store is still experimental and not well tested. Feedback is welcome.
+type FilesystemStore struct {
+	Codecs  []securecookie.Codec
+	Options *Options // default configuration
+	path    string
+}
+
+// MaxLength restricts the maximum length of new sessions to l.
+// If l is 0 there is no limit to the size of a session, use with caution.
+// The default for a new FilesystemStore is 4096.
+func (s *FilesystemStore) MaxLength(l int) {
+	for _, c := range s.Codecs {
+		if codec, ok := c.(*securecookie.SecureCookie); ok {
+			codec.MaxLength(l)
+		}
+	}
+}
+
+// Get returns a session for the given name after adding it to the registry.
+//
+// See CookieStore.Get().
+func (s *FilesystemStore) Get(r *http.Request, name string) (*Session, error) {
+	return GetRegistry(r).Get(s, name)
+}
+
+// New returns a session for the given name without adding it to the registry.
+//
+// See CookieStore.New().
+func (s *FilesystemStore) New(r *http.Request, name string) (*Session, error) {
+	session := NewSession(s, name)
+	opts := *s.Options
+	session.Options = &opts
+	session.IsNew = true
+	var err error
+	if c, errCookie := r.Cookie(name); errCookie == nil {
+		err = securecookie.DecodeMulti(name, c.Value, &session.ID, s.Codecs...)
+		if err == nil {
+			err = s.load(session)
+			if err == nil {
+				session.IsNew = false
+			}
+		}
+	}
+	return session, err
+}
+
+// Save adds a single session to the response.
+func (s *FilesystemStore) Save(r *http.Request, w http.ResponseWriter,
+	session *Session) error {
+	if session.ID == "" {
+		// Because the ID is used in the filename, encode it to
+		// use alphanumeric characters only.
+		session.ID = strings.TrimRight(
+			base32.StdEncoding.EncodeToString(
+				securecookie.GenerateRandomKey(32)), "=")
+	}
+	if err := s.save(session); err != nil {
+		return err
+	}
+	encoded, err := securecookie.EncodeMulti(session.Name(), session.ID,
+		s.Codecs...)
+	if err != nil {
+		return err
+	}
+	http.SetCookie(w, NewCookie(session.Name(), encoded, session.Options))
+	return nil
+}
+
+// MaxAge sets the maximum age for the store and the underlying cookie
+// implementation. Individual sessions can be deleted by setting Options.MaxAge
+// = -1 for that session.
+func (s *FilesystemStore) MaxAge(age int) {
+	s.Options.MaxAge = age
+
+	// Set the maxAge for each securecookie instance.
+	for _, codec := range s.Codecs {
+		if sc, ok := codec.(*securecookie.SecureCookie); ok {
+			sc.MaxAge(age)
+		}
+	}
+}
+
+// save writes encoded session.Values to a file.
+func (s *FilesystemStore) save(session *Session) error {
+	encoded, err := securecookie.EncodeMulti(session.Name(), session.Values,
+		s.Codecs...)
+	if err != nil {
+		return err
+	}
+	filename := filepath.Join(s.path, "session_"+session.ID)
+	fileMutex.Lock()
+	defer fileMutex.Unlock()
+	return ioutil.WriteFile(filename, []byte(encoded), 0600)
+}
+
+// load reads a file and decodes its content into session.Values.
+func (s *FilesystemStore) load(session *Session) error {
+	filename := filepath.Join(s.path, "session_"+session.ID)
+	fileMutex.RLock()
+	defer fileMutex.RUnlock()
+	fdata, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return err
+	}
+	if err = securecookie.DecodeMulti(session.Name(), string(fdata),
+		&session.Values, s.Codecs...); err != nil {
+		return err
+	}
+	return nil
+}
diff --git a/vendor/github.com/hashicorp/hcl/LICENSE b/vendor/github.com/hashicorp/hcl/LICENSE
new file mode 100644
index 0000000..c33dcc7
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/LICENSE
@@ -0,0 +1,354 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. “Contributor”
+
+     means each individual or legal entity that creates, contributes to the
+     creation of, or owns Covered Software.
+
+1.2. “Contributor Version”
+
+     means the combination of the Contributions of others (if any) used by a
+     Contributor and that particular Contributor’s Contribution.
+
+1.3. “Contribution”
+
+     means Covered Software of a particular Contributor.
+
+1.4. “Covered Software”
+
+     means Source Code Form to which the initial Contributor has attached the
+     notice in Exhibit A, the Executable Form of such Source Code Form, and
+     Modifications of such Source Code Form, in each case including portions
+     thereof.
+
+1.5. “Incompatible With Secondary Licenses”
+     means
+
+     a. that the initial Contributor has attached the notice described in
+        Exhibit B to the Covered Software; or
+
+     b. that the Covered Software was made available under the terms of version
+        1.1 or earlier of the License, but not also under the terms of a
+        Secondary License.
+
+1.6. “Executable Form”
+
+     means any form of the work other than Source Code Form.
+
+1.7. “Larger Work”
+
+     means a work that combines Covered Software with other material, in a separate
+     file or files, that is not Covered Software.
+
+1.8. “License”
+
+     means this document.
+
+1.9. “Licensable”
+
+     means having the right to grant, to the maximum extent possible, whether at the
+     time of the initial grant or subsequently, any and all of the rights conveyed by
+     this License.
+
+1.10. “Modifications”
+
+     means any of the following:
+
+     a. any file in Source Code Form that results from an addition to, deletion
+        from, or modification of the contents of Covered Software; or
+
+     b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. “Patent Claims” of a Contributor
+
+      means any patent claim(s), including without limitation, method, process,
+      and apparatus claims, in any patent Licensable by such Contributor that
+      would be infringed, but for the grant of the License, by the making,
+      using, selling, offering for sale, having made, import, or transfer of
+      either its Contributions or its Contributor Version.
+
+1.12. “Secondary License”
+
+      means either the GNU General Public License, Version 2.0, the GNU Lesser
+      General Public License, Version 2.1, the GNU Affero General Public
+      License, Version 3.0, or any later versions of those licenses.
+
+1.13. “Source Code Form”
+
+      means the form of the work preferred for making modifications.
+
+1.14. “You” (or “Your”)
+
+      means an individual or a legal entity exercising rights under this
+      License. For legal entities, “You” includes any entity that controls, is
+      controlled by, or is under common control with You. For purposes of this
+      definition, “control” means (a) the power, direct or indirect, to cause
+      the direction or management of such entity, whether by contract or
+      otherwise, or (b) ownership of more than fifty percent (50%) of the
+      outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+     Each Contributor hereby grants You a world-wide, royalty-free,
+     non-exclusive license:
+
+     a. under intellectual property rights (other than patent or trademark)
+        Licensable by such Contributor to use, reproduce, make available,
+        modify, display, perform, distribute, and otherwise exploit its
+        Contributions, either on an unmodified basis, with Modifications, or as
+        part of a Larger Work; and
+
+     b. under Patent Claims of such Contributor to make, use, sell, offer for
+        sale, have made, import, and otherwise transfer either its Contributions
+        or its Contributor Version.
+
+2.2. Effective Date
+
+     The licenses granted in Section 2.1 with respect to any Contribution become
+     effective for each Contribution on the date the Contributor first distributes
+     such Contribution.
+
+2.3. Limitations on Grant Scope
+
+     The licenses granted in this Section 2 are the only rights granted under this
+     License. No additional rights or licenses will be implied from the distribution
+     or licensing of Covered Software under this License. Notwithstanding Section
+     2.1(b) above, no patent license is granted by a Contributor:
+
+     a. for any code that a Contributor has removed from Covered Software; or
+
+     b. for infringements caused by: (i) Your and any other third party’s
+        modifications of Covered Software, or (ii) the combination of its
+        Contributions with other software (except as part of its Contributor
+        Version); or
+
+     c. under Patent Claims infringed by Covered Software in the absence of its
+        Contributions.
+
+     This License does not grant any rights in the trademarks, service marks, or
+     logos of any Contributor (except as may be necessary to comply with the
+     notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+     No Contributor makes additional grants as a result of Your choice to
+     distribute the Covered Software under a subsequent version of this License
+     (see Section 10.2) or under the terms of a Secondary License (if permitted
+     under the terms of Section 3.3).
+
+2.5. Representation
+
+     Each Contributor represents that the Contributor believes its Contributions
+     are its original creation(s) or it has sufficient rights to grant the
+     rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+     This License is not intended to limit any rights You have under applicable
+     copyright doctrines of fair use, fair dealing, or other equivalents.
+
+2.7. Conditions
+
+     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+     Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+     All distribution of Covered Software in Source Code Form, including any
+     Modifications that You create or to which You contribute, must be under the
+     terms of this License. You must inform recipients that the Source Code Form
+     of the Covered Software is governed by the terms of this License, and how
+     they can obtain a copy of this License. You may not attempt to alter or
+     restrict the recipients’ rights in the Source Code Form.
+
+3.2. Distribution of Executable Form
+
+     If You distribute Covered Software in Executable Form then:
+
+     a. such Covered Software must also be made available in Source Code Form,
+        as described in Section 3.1, and You must inform recipients of the
+        Executable Form how they can obtain a copy of such Source Code Form by
+        reasonable means in a timely manner, at a charge no more than the cost
+        of distribution to the recipient; and
+
+     b. You may distribute such Executable Form under the terms of this License,
+        or sublicense it under different terms, provided that the license for
+        the Executable Form does not attempt to limit or alter the recipients’
+        rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+     You may create and distribute a Larger Work under terms of Your choice,
+     provided that You also comply with the requirements of this License for the
+     Covered Software. If the Larger Work is a combination of Covered Software
+     with a work governed by one or more Secondary Licenses, and the Covered
+     Software is not Incompatible With Secondary Licenses, this License permits
+     You to additionally distribute such Covered Software under the terms of
+     such Secondary License(s), so that the recipient of the Larger Work may, at
+     their option, further distribute the Covered Software under the terms of
+     either this License or such Secondary License(s).
+
+3.4. Notices
+
+     You may not remove or alter the substance of any license notices (including
+     copyright notices, patent notices, disclaimers of warranty, or limitations
+     of liability) contained within the Source Code Form of the Covered
+     Software, except that You may alter any license notices to the extent
+     required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+     You may choose to offer, and to charge a fee for, warranty, support,
+     indemnity or liability obligations to one or more recipients of Covered
+     Software. However, You may do so only on Your own behalf, and not on behalf
+     of any Contributor. You must make it absolutely clear that any such
+     warranty, support, indemnity, or liability obligation is offered by You
+     alone, and You hereby agree to indemnify every Contributor for any
+     liability incurred by such Contributor as a result of warranty, support,
+     indemnity or liability terms You offer. You may include additional
+     disclaimers of warranty and limitations of liability specific to any
+     jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+   If it is impossible for You to comply with any of the terms of this License
+   with respect to some or all of the Covered Software due to statute, judicial
+   order, or regulation then You must: (a) comply with the terms of this License
+   to the maximum extent possible; and (b) describe the limitations and the code
+   they affect. Such description must be placed in a text file included with all
+   distributions of the Covered Software under this License. Except to the
+   extent prohibited by statute or regulation, such description must be
+   sufficiently detailed for a recipient of ordinary skill to be able to
+   understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+     fail to comply with any of its terms. However, if You become compliant,
+     then the rights granted under this License from a particular Contributor
+     are reinstated (a) provisionally, unless and until such Contributor
+     explicitly and finally terminates Your grants, and (b) on an ongoing basis,
+     if such Contributor fails to notify You of the non-compliance by some
+     reasonable means prior to 60 days after You have come back into compliance.
+     Moreover, Your grants from a particular Contributor are reinstated on an
+     ongoing basis if such Contributor notifies You of the non-compliance by
+     some reasonable means, this is the first time You have received notice of
+     non-compliance with this License from such Contributor, and You become
+     compliant prior to 30 days after Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+     infringement claim (excluding declaratory judgment actions, counter-claims,
+     and cross-claims) alleging that a Contributor Version directly or
+     indirectly infringes any patent, then the rights granted to You by any and
+     all Contributors for the Covered Software under Section 2.1 of this License
+     shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+     license agreements (excluding distributors and resellers) which have been
+     validly granted by You or Your distributors under this License prior to
+     termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+   Covered Software is provided under this License on an “as is” basis, without
+   warranty of any kind, either expressed, implied, or statutory, including,
+   without limitation, warranties that the Covered Software is free of defects,
+   merchantable, fit for a particular purpose or non-infringing. The entire
+   risk as to the quality and performance of the Covered Software is with You.
+   Should any Covered Software prove defective in any respect, You (not any
+   Contributor) assume the cost of any necessary servicing, repair, or
+   correction. This disclaimer of warranty constitutes an essential part of this
+   License. No use of  any Covered Software is authorized under this License
+   except under this disclaimer.
+
+7. Limitation of Liability
+
+   Under no circumstances and under no legal theory, whether tort (including
+   negligence), contract, or otherwise, shall any Contributor, or anyone who
+   distributes Covered Software as permitted above, be liable to You for any
+   direct, indirect, special, incidental, or consequential damages of any
+   character including, without limitation, damages for lost profits, loss of
+   goodwill, work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses, even if such party shall have been
+   informed of the possibility of such damages. This limitation of liability
+   shall not apply to liability for death or personal injury resulting from such
+   party’s negligence to the extent applicable law prohibits such limitation.
+   Some jurisdictions do not allow the exclusion or limitation of incidental or
+   consequential damages, so this exclusion and limitation may not apply to You.
+
+8. Litigation
+
+   Any litigation relating to this License may be brought only in the courts of
+   a jurisdiction where the defendant maintains its principal place of business
+   and such litigation shall be governed by laws of that jurisdiction, without
+   reference to its conflict-of-law provisions. Nothing in this Section shall
+   prevent a party’s ability to bring cross-claims or counter-claims.
+
+9. Miscellaneous
+
+   This License represents the complete agreement concerning the subject matter
+   hereof. If any provision of this License is held to be unenforceable, such
+   provision shall be reformed only to the extent necessary to make it
+   enforceable. Any law or regulation which provides that the language of a
+   contract shall be construed against the drafter shall not be used to construe
+   this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+      Mozilla Foundation is the license steward. Except as provided in Section
+      10.3, no one other than the license steward has the right to modify or
+      publish new versions of this License. Each version will be given a
+      distinguishing version number.
+
+10.2. Effect of New Versions
+
+      You may distribute the Covered Software under the terms of the version of
+      the License under which You originally received the Covered Software, or
+      under the terms of any subsequent version published by the license
+      steward.
+
+10.3. Modified Versions
+
+      If you create software not governed by this License, and you want to
+      create a new license for such software, you may create and use a modified
+      version of this License if you rename the license and remove any
+      references to the name of the license steward (except to note that such
+      modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
+      If You choose to distribute Source Code Form that is Incompatible With
+      Secondary Licenses under the terms of this version of the License, the
+      notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+
+      This Source Code Form is subject to the
+      terms of the Mozilla Public License, v.
+      2.0. If a copy of the MPL was not
+      distributed with this file, You can
+      obtain one at
+      http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file, then
+You may include the notice in a location (such as a LICENSE file in a relevant
+directory) where a recipient would be likely to look for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - “Incompatible With Secondary Licenses” Notice
+
+      This Source Code Form is “Incompatible
+      With Secondary Licenses”, as defined by
+      the Mozilla Public License, v. 2.0.
+
diff --git a/vendor/github.com/hashicorp/hcl/Makefile b/vendor/github.com/hashicorp/hcl/Makefile
new file mode 100644
index 0000000..ad404a8
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/Makefile
@@ -0,0 +1,17 @@
+TEST?=./...

+

+default: test

+

+fmt: generate

+	go fmt ./...

+

+test: generate

+	go test $(TEST) $(TESTARGS)

+

+generate:

+	go generate ./...

+

+updatedeps:

+	go get -u golang.org/x/tools/cmd/stringer

+

+.PHONY: default generate test updatedeps

diff --git a/vendor/github.com/hashicorp/hcl/README.md b/vendor/github.com/hashicorp/hcl/README.md
new file mode 100644
index 0000000..3d5b8bd
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/README.md
@@ -0,0 +1,104 @@
+# HCL
+
+[![GoDoc](https://godoc.org/github.com/hashicorp/hcl?status.png)](https://godoc.org/github.com/hashicorp/hcl) [![Build Status](https://travis-ci.org/hashicorp/hcl.svg?branch=master)](https://travis-ci.org/hashicorp/hcl)
+
+HCL (HashiCorp Configuration Language) is a configuration language built
+by HashiCorp. The goal of HCL is to build a structured configuration language
+that is both human and machine friendly for use with command-line tools, but
+specifically targeted towards DevOps tools, servers, etc.
+
+HCL is also fully JSON compatible. That is, JSON can be used as completely
+valid input to a system expecting HCL. This helps makes systems
+interoperable with other systems.
+
+HCL is heavily inspired by
+[libucl](https://github.com/vstakhov/libucl),
+nginx configuration, and others similar.
+
+## Why?
+
+A common question when viewing HCL is to ask the question: why not
+JSON, YAML, etc.?
+
+Prior to HCL, the tools we built at [HashiCorp](http://www.hashicorp.com)
+used a variety of configuration languages from full programming languages
+such as Ruby to complete data structure languages such as JSON. What we
+learned is that some people wanted human-friendly configuration languages
+and some people wanted machine-friendly languages.
+
+JSON fits a nice balance in this, but is fairly verbose and most
+importantly doesn't support comments. With YAML, we found that beginners
+had a really hard time determining what the actual structure was, and
+ended up guessing more often than not whether to use a hyphen, colon, etc.
+in order to represent some configuration key.
+
+Full programming languages such as Ruby enable complex behavior
+a configuration language shouldn't usually allow, and also forces
+people to learn some set of Ruby.
+
+Because of this, we decided to create our own configuration language
+that is JSON-compatible. Our configuration language (HCL) is designed
+to be written and modified by humans. The API for HCL allows JSON
+as an input so that it is also machine-friendly (machines can generate
+JSON instead of trying to generate HCL).
+
+Our goal with HCL is not to alienate other configuration languages.
+It is instead to provide HCL as a specialized language for our tools,
+and JSON as the interoperability layer.
+
+## Syntax
+
+For a complete grammar, please see the parser itself. A high-level overview
+of the syntax and grammar is listed here.
+
+  * Single line comments start with `#` or `//`
+
+  * Multi-line comments are wrapped in `/*` and `*/`. Nested block comments
+    are not allowed. A multi-line comment (also known as a block comment)
+    terminates at the first `*/` found.
+
+  * Values are assigned with the syntax `key = value` (whitespace doesn't
+    matter). The value can be any primitive: a string, number, boolean,
+    object, or list.
+
+  * Strings are double-quoted and can contain any UTF-8 characters.
+    Example: `"Hello, World"`
+
+  * Multi-line strings start with `<<EOF` at the end of a line, and end
+    with `EOF` on its own line ([here documents](https://en.wikipedia.org/wiki/Here_document)).
+    Any text may be used in place of `EOF`. Example:
+```
+<<FOO
+hello
+world
+FOO
+```
+
+  * Numbers are assumed to be base 10. If you prefix a number with 0x,
+    it is treated as a hexadecimal. If it is prefixed with 0, it is
+    treated as an octal. Numbers can be in scientific notation: "1e10".
+
+  * Boolean values: `true`, `false`
+
+  * Arrays can be made by wrapping it in `[]`. Example:
+    `["foo", "bar", 42]`. Arrays can contain primitives
+    and other arrays, but cannot contain objects. Objects must
+    use the block syntax shown below.
+
+Objects and nested objects are created using the structure shown below:
+
+```
+variable "ami" {
+    description = "the AMI to use"
+}
+```
+
+## Thanks
+
+Thanks to:
+
+  * [@vstakhov](https://github.com/vstakhov) - The original libucl parser
+    and syntax that HCL was based off of.
+
+  * [@fatih](https://github.com/fatih) - The rewritten HCL parser
+    in pure Go (no goyacc) and support for a printer.
diff --git a/vendor/github.com/hashicorp/hcl/appveyor.yml b/vendor/github.com/hashicorp/hcl/appveyor.yml
new file mode 100644
index 0000000..e70f03b
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/appveyor.yml
@@ -0,0 +1,16 @@
+version: "build-{branch}-{build}"
+image: Visual Studio 2015
+clone_folder: c:\gopath\src\github.com\hashicorp\hcl
+environment:
+  GOPATH: c:\gopath
+init:
+  - git config --global core.autocrlf true
+install:
+- cmd: >-
+    echo %Path%
+
+    go version
+
+    go env
+build_script:
+- cmd: go test -v ./...
diff --git a/vendor/github.com/hashicorp/hcl/decoder.go b/vendor/github.com/hashicorp/hcl/decoder.go
new file mode 100644
index 0000000..02888d2
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/decoder.go
@@ -0,0 +1,654 @@
+package hcl
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+
+	"github.com/hashicorp/hcl/hcl/ast"
+	"github.com/hashicorp/hcl/hcl/parser"
+	"github.com/hashicorp/hcl/hcl/token"
+)
+
+// This is the tag to use with structures to have settings for HCL
+const tagName = "hcl"
+
+var (
+	// nodeType holds a reference to the type of ast.Node
+	nodeType reflect.Type = findNodeType()
+)
+
+// Unmarshal accepts a byte slice as input and writes the
+// data to the value pointed to by v.
+func Unmarshal(bs []byte, v interface{}) error {
+	root, err := parse(bs)
+	if err != nil {
+		return err
+	}
+
+	return DecodeObject(v, root)
+}
+
+// Decode reads the given input and decodes it into the structure
+// given by `out`.
+func Decode(out interface{}, in string) error {
+	obj, err := Parse(in)
+	if err != nil {
+		return err
+	}
+
+	return DecodeObject(out, obj)
+}
+
+// DecodeObject is a lower-level version of Decode. It decodes a
+// raw Object into the given output.
+func DecodeObject(out interface{}, n ast.Node) error {
+	val := reflect.ValueOf(out)
+	if val.Kind() != reflect.Ptr {
+		return errors.New("result must be a pointer")
+	}
+
+	// If we have the file, we really decode the root node
+	if f, ok := n.(*ast.File); ok {
+		n = f.Node
+	}
+
+	var d decoder
+	return d.decode("root", n, val.Elem())
+}
+
+type decoder struct {
+	stack []reflect.Kind
+}
+
+func (d *decoder) decode(name string, node ast.Node, result reflect.Value) error {
+	k := result
+
+	// If we have an interface with a valid value, we use that
+	// for the check.
+	if result.Kind() == reflect.Interface {
+		elem := result.Elem()
+		if elem.IsValid() {
+			k = elem
+		}
+	}
+
+	// Push current onto stack unless it is an interface.
+	if k.Kind() != reflect.Interface {
+		d.stack = append(d.stack, k.Kind())
+
+		// Schedule a pop
+		defer func() {
+			d.stack = d.stack[:len(d.stack)-1]
+		}()
+	}
+
+	switch k.Kind() {
+	case reflect.Bool:
+		return d.decodeBool(name, node, result)
+	case reflect.Float64:
+		return d.decodeFloat(name, node, result)
+	case reflect.Int:
+		return d.decodeInt(name, node, result)
+	case reflect.Interface:
+		// When we see an interface, we make our own thing
+		return d.decodeInterface(name, node, result)
+	case reflect.Map:
+		return d.decodeMap(name, node, result)
+	case reflect.Ptr:
+		return d.decodePtr(name, node, result)
+	case reflect.Slice:
+		return d.decodeSlice(name, node, result)
+	case reflect.String:
+		return d.decodeString(name, node, result)
+	case reflect.Struct:
+		return d.decodeStruct(name, node, result)
+	default:
+		return &parser.PosError{
+			Pos: node.Pos(),
+			Err: fmt.Errorf("%s: unknown kind to decode into: %s", name, k.Kind()),
+		}
+	}
+}
+
+func (d *decoder) decodeBool(name string, node ast.Node, result reflect.Value) error {
+	switch n := node.(type) {
+	case *ast.LiteralType:
+		if n.Token.Type == token.BOOL {
+			v, err := strconv.ParseBool(n.Token.Text)
+			if err != nil {
+				return err
+			}
+
+			result.Set(reflect.ValueOf(v))
+			return nil
+		}
+	}
+
+	return &parser.PosError{
+		Pos: node.Pos(),
+		Err: fmt.Errorf("%s: unknown type %T", name, node),
+	}
+}
+
+func (d *decoder) decodeFloat(name string, node ast.Node, result reflect.Value) error {
+	switch n := node.(type) {
+	case *ast.LiteralType:
+		if n.Token.Type == token.FLOAT {
+			v, err := strconv.ParseFloat(n.Token.Text, 64)
+			if err != nil {
+				return err
+			}
+
+			result.Set(reflect.ValueOf(v))
+			return nil
+		}
+	}
+
+	return &parser.PosError{
+		Pos: node.Pos(),
+		Err: fmt.Errorf("%s: unknown type %T", name, node),
+	}
+}
+
+func (d *decoder) decodeInt(name string, node ast.Node, result reflect.Value) error {
+	switch n := node.(type) {
+	case *ast.LiteralType:
+		switch n.Token.Type {
+		case token.NUMBER:
+			v, err := strconv.ParseInt(n.Token.Text, 0, 0)
+			if err != nil {
+				return err
+			}
+
+			result.Set(reflect.ValueOf(int(v)))
+			return nil
+		case token.STRING:
+			v, err := strconv.ParseInt(n.Token.Value().(string), 0, 0)
+			if err != nil {
+				return err
+			}
+
+			result.Set(reflect.ValueOf(int(v)))
+			return nil
+		}
+	}
+
+	return &parser.PosError{
+		Pos: node.Pos(),
+		Err: fmt.Errorf("%s: unknown type %T", name, node),
+	}
+}
+
+func (d *decoder) decodeInterface(name string, node ast.Node, result reflect.Value) error {
+	// When we see an ast.Node, we retain the value to enable deferred decoding.
+	// Very useful in situations where we want to preserve ast.Node information
+	// like Pos
+	if result.Type() == nodeType && result.CanSet() {
+		result.Set(reflect.ValueOf(node))
+		return nil
+	}
+
+	var set reflect.Value
+	redecode := true
+
+	// For testing types, ObjectType should just be treated as a list. We
+	// set this to a temporary var because we want to pass in the real node.
+	testNode := node
+	if ot, ok := node.(*ast.ObjectType); ok {
+		testNode = ot.List
+	}
+
+	switch n := testNode.(type) {
+	case *ast.ObjectList:
+		// If we're at the root or we're directly within a slice, then we
+		// decode objects into map[string]interface{}, otherwise we decode
+		// them into lists.
+		if len(d.stack) == 0 || d.stack[len(d.stack)-1] == reflect.Slice {
+			var temp map[string]interface{}
+			tempVal := reflect.ValueOf(temp)
+			result := reflect.MakeMap(
+				reflect.MapOf(
+					reflect.TypeOf(""),
+					tempVal.Type().Elem()))
+
+			set = result
+		} else {
+			var temp []map[string]interface{}
+			tempVal := reflect.ValueOf(temp)
+			result := reflect.MakeSlice(
+				reflect.SliceOf(tempVal.Type().Elem()), 0, len(n.Items))
+			set = result
+		}
+	case *ast.ObjectType:
+		// If we're at the root or we're directly within a slice, then we
+		// decode objects into map[string]interface{}, otherwise we decode
+		// them into lists.
+		if len(d.stack) == 0 || d.stack[len(d.stack)-1] == reflect.Slice {
+			var temp map[string]interface{}
+			tempVal := reflect.ValueOf(temp)
+			result := reflect.MakeMap(
+				reflect.MapOf(
+					reflect.TypeOf(""),
+					tempVal.Type().Elem()))
+
+			set = result
+		} else {
+			var temp []map[string]interface{}
+			tempVal := reflect.ValueOf(temp)
+			result := reflect.MakeSlice(
+				reflect.SliceOf(tempVal.Type().Elem()), 0, 1)
+			set = result
+		}
+	case *ast.ListType:
+		var temp []interface{}
+		tempVal := reflect.ValueOf(temp)
+		result := reflect.MakeSlice(
+			reflect.SliceOf(tempVal.Type().Elem()), 0, 0)
+		set = result
+	case *ast.LiteralType:
+		switch n.Token.Type {
+		case token.BOOL:
+			var result bool
+			set = reflect.Indirect(reflect.New(reflect.TypeOf(result)))
+		case token.FLOAT:
+			var result float64
+			set = reflect.Indirect(reflect.New(reflect.TypeOf(result)))
+		case token.NUMBER:
+			var result int
+			set = reflect.Indirect(reflect.New(reflect.TypeOf(result)))
+		case token.STRING, token.HEREDOC:
+			set = reflect.Indirect(reflect.New(reflect.TypeOf("")))
+		default:
+			return &parser.PosError{
+				Pos: node.Pos(),
+				Err: fmt.Errorf("%s: cannot decode into interface: %T", name, node),
+			}
+		}
+	default:
+		return fmt.Errorf(
+			"%s: cannot decode into interface: %T",
+			name, node)
+	}
+
+	// Set the result to what its supposed to be, then reset
+	// result so we don't reflect into this method anymore.
+	result.Set(set)
+
+	if redecode {
+		// Revisit the node so that we can use the newly instantiated
+		// thing and populate it.
+		if err := d.decode(name, node, result); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (d *decoder) decodeMap(name string, node ast.Node, result reflect.Value) error {
+	if item, ok := node.(*ast.ObjectItem); ok {
+		node = &ast.ObjectList{Items: []*ast.ObjectItem{item}}
+	}
+
+	if ot, ok := node.(*ast.ObjectType); ok {
+		node = ot.List
+	}
+
+	n, ok := node.(*ast.ObjectList)
+	if !ok {
+		return &parser.PosError{
+			Pos: node.Pos(),
+			Err: fmt.Errorf("%s: not an object type for map (%T)", name, node),
+		}
+	}
+
+	// If we have an interface, then we can address the interface,
+	// but not the slice itself, so get the element but set the interface
+	set := result
+	if result.Kind() == reflect.Interface {
+		result = result.Elem()
+	}
+
+	resultType := result.Type()
+	resultElemType := resultType.Elem()
+	resultKeyType := resultType.Key()
+	if resultKeyType.Kind() != reflect.String {
+		return &parser.PosError{
+			Pos: node.Pos(),
+			Err: fmt.Errorf("%s: map must have string keys", name),
+		}
+	}
+
+	// Make a map if it is nil
+	resultMap := result
+	if result.IsNil() {
+		resultMap = reflect.MakeMap(
+			reflect.MapOf(resultKeyType, resultElemType))
+	}
+
+	// Go through each element and decode it.
+	done := make(map[string]struct{})
+	for _, item := range n.Items {
+		if item.Val == nil {
+			continue
+		}
+
+		// github.com/hashicorp/terraform/issue/5740
+		if len(item.Keys) == 0 {
+			return &parser.PosError{
+				Pos: node.Pos(),
+				Err: fmt.Errorf("%s: map must have string keys", name),
+			}
+		}
+
+		// Get the key we're dealing with, which is the first item
+		keyStr := item.Keys[0].Token.Value().(string)
+
+		// If we've already processed this key, then ignore it
+		if _, ok := done[keyStr]; ok {
+			continue
+		}
+
+		// Determine the value. If we have more than one key, then we
+		// get the objectlist of only these keys.
+		itemVal := item.Val
+		if len(item.Keys) > 1 {
+			itemVal = n.Filter(keyStr)
+			done[keyStr] = struct{}{}
+		}
+
+		// Make the field name
+		fieldName := fmt.Sprintf("%s.%s", name, keyStr)
+
+		// Get the key/value as reflection values
+		key := reflect.ValueOf(keyStr)
+		val := reflect.Indirect(reflect.New(resultElemType))
+
+		// If we have a pre-existing value in the map, use that
+		oldVal := resultMap.MapIndex(key)
+		if oldVal.IsValid() {
+			val.Set(oldVal)
+		}
+
+		// Decode!
+		if err := d.decode(fieldName, itemVal, val); err != nil {
+			return err
+		}
+
+		// Set the value on the map
+		resultMap.SetMapIndex(key, val)
+	}
+
+	// Set the final map if we can
+	set.Set(resultMap)
+	return nil
+}
+
+func (d *decoder) decodePtr(name string, node ast.Node, result reflect.Value) error {
+	// Create an element of the concrete (non pointer) type and decode
+	// into that. Then set the value of the pointer to this type.
+	resultType := result.Type()
+	resultElemType := resultType.Elem()
+	val := reflect.New(resultElemType)
+	if err := d.decode(name, node, reflect.Indirect(val)); err != nil {
+		return err
+	}
+
+	result.Set(val)
+	return nil
+}
+
+func (d *decoder) decodeSlice(name string, node ast.Node, result reflect.Value) error {
+	// If we have an interface, then we can address the interface,
+	// but not the slice itself, so get the element but set the interface
+	set := result
+	if result.Kind() == reflect.Interface {
+		result = result.Elem()
+	}
+
+	// Create the slice if it isn't nil
+	resultType := result.Type()
+	resultElemType := resultType.Elem()
+	if result.IsNil() {
+		resultSliceType := reflect.SliceOf(resultElemType)
+		result = reflect.MakeSlice(
+			resultSliceType, 0, 0)
+	}
+
+	// Figure out the items we'll be copying into the slice
+	var items []ast.Node
+	switch n := node.(type) {
+	case *ast.ObjectList:
+		items = make([]ast.Node, len(n.Items))
+		for i, item := range n.Items {
+			items[i] = item
+		}
+	case *ast.ObjectType:
+		items = []ast.Node{n}
+	case *ast.ListType:
+		items = n.List
+	default:
+		return &parser.PosError{
+			Pos: node.Pos(),
+			Err: fmt.Errorf("unknown slice type: %T", node),
+		}
+	}
+
+	for i, item := range items {
+		fieldName := fmt.Sprintf("%s[%d]", name, i)
+
+		// Decode
+		val := reflect.Indirect(reflect.New(resultElemType))
+		if err := d.decode(fieldName, item, val); err != nil {
+			return err
+		}
+
+		// Append it onto the slice
+		result = reflect.Append(result, val)
+	}
+
+	set.Set(result)
+	return nil
+}
+
+func (d *decoder) decodeString(name string, node ast.Node, result reflect.Value) error {
+	switch n := node.(type) {
+	case *ast.LiteralType:
+		switch n.Token.Type {
+		case token.NUMBER:
+			result.Set(reflect.ValueOf(n.Token.Text).Convert(result.Type()))
+			return nil
+		case token.STRING, token.HEREDOC:
+			result.Set(reflect.ValueOf(n.Token.Value()).Convert(result.Type()))
+			return nil
+		}
+	}
+
+	return &parser.PosError{
+		Pos: node.Pos(),
+		Err: fmt.Errorf("%s: unknown type for string %T", name, node),
+	}
+}
+
+func (d *decoder) decodeStruct(name string, node ast.Node, result reflect.Value) error {
+	var item *ast.ObjectItem
+	if it, ok := node.(*ast.ObjectItem); ok {
+		item = it
+		node = it.Val
+	}
+
+	if ot, ok := node.(*ast.ObjectType); ok {
+		node = ot.List
+	}
+
+	// Handle the special case where the object itself is a literal. Previously
+	// the yacc parser would always ensure top-level elements were arrays. The new
+	// parser does not make the same guarantees, thus we need to convert any
+	// top-level literal elements into a list.
+	if _, ok := node.(*ast.LiteralType); ok {
+		node = &ast.ObjectList{Items: []*ast.ObjectItem{item}}
+	}
+
+	list, ok := node.(*ast.ObjectList)
+	if !ok {
+		return &parser.PosError{
+			Pos: node.Pos(),
+			Err: fmt.Errorf("%s: not an object type for struct (%T)", name, node),
+		}
+	}
+
+	// This slice will keep track of all the structs we'll be decoding.
+	// There can be more than one struct if there are embedded structs
+	// that are squashed.
+	structs := make([]reflect.Value, 1, 5)
+	structs[0] = result
+
+	// Compile the list of all the fields that we're going to be decoding
+	// from all the structs.
+	fields := make(map[*reflect.StructField]reflect.Value)
+	for len(structs) > 0 {
+		structVal := structs[0]
+		structs = structs[1:]
+
+		structType := structVal.Type()
+		for i := 0; i < structType.NumField(); i++ {
+			fieldType := structType.Field(i)
+
+			if fieldType.Anonymous {
+				fieldKind := fieldType.Type.Kind()
+				if fieldKind != reflect.Struct {
+					return &parser.PosError{
+						Pos: node.Pos(),
+						Err: fmt.Errorf("%s: unsupported type to struct: %s",
+							fieldType.Name, fieldKind),
+					}
+				}
+
+				// We have an embedded field. We "squash" the fields down
+				// if specified in the tag.
+				squash := false
+				tagParts := strings.Split(fieldType.Tag.Get(tagName), ",")
+				for _, tag := range tagParts[1:] {
+					if tag == "squash" {
+						squash = true
+						break
+					}
+				}
+
+				if squash {
+					structs = append(
+						structs, result.FieldByName(fieldType.Name))
+					continue
+				}
+			}
+
+			// Normal struct field, store it away
+			fields[&fieldType] = structVal.Field(i)
+		}
+	}
+
+	usedKeys := make(map[string]struct{})
+	decodedFields := make([]string, 0, len(fields))
+	decodedFieldsVal := make([]reflect.Value, 0)
+	unusedKeysVal := make([]reflect.Value, 0)
+	for fieldType, field := range fields {
+		if !field.IsValid() {
+			// This should never happen
+			panic("field is not valid")
+		}
+
+		// If we can't set the field, then it is unexported or something,
+		// and we just continue onwards.
+		if !field.CanSet() {
+			continue
+		}
+
+		fieldName := fieldType.Name
+
+		tagValue := fieldType.Tag.Get(tagName)
+		tagParts := strings.SplitN(tagValue, ",", 2)
+		if len(tagParts) >= 2 {
+			switch tagParts[1] {
+			case "decodedFields":
+				decodedFieldsVal = append(decodedFieldsVal, field)
+				continue
+			case "key":
+				if item == nil {
+					return &parser.PosError{
+						Pos: node.Pos(),
+						Err: fmt.Errorf("%s: %s asked for 'key', impossible",
+							name, fieldName),
+					}
+				}
+
+				field.SetString(item.Keys[0].Token.Value().(string))
+				continue
+			case "unusedKeys":
+				unusedKeysVal = append(unusedKeysVal, field)
+				continue
+			}
+		}
+
+		if tagParts[0] != "" {
+			fieldName = tagParts[0]
+		}
+
+		// Determine the element we'll use to decode. If it is a single
+		// match (only object with the field), then we decode it exactly.
+		// If it is a prefix match, then we decode the matches.
+		filter := list.Filter(fieldName)
+		prefixMatches := filter.Children()
+		matches := filter.Elem()
+		if len(matches.Items) == 0 && len(prefixMatches.Items) == 0 {
+			continue
+		}
+
+		// Track the used key
+		usedKeys[fieldName] = struct{}{}
+
+		// Create the field name and decode. We range over the elements
+		// because we actually want the value.
+		fieldName = fmt.Sprintf("%s.%s", name, fieldName)
+		if len(prefixMatches.Items) > 0 {
+			if err := d.decode(fieldName, prefixMatches, field); err != nil {
+				return err
+			}
+		}
+		for _, match := range matches.Items {
+			var decodeNode ast.Node = match.Val
+			if ot, ok := decodeNode.(*ast.ObjectType); ok {
+				decodeNode = &ast.ObjectList{Items: ot.List.Items}
+			}
+
+			if err := d.decode(fieldName, decodeNode, field); err != nil {
+				return err
+			}
+		}
+
+		decodedFields = append(decodedFields, fieldType.Name)
+	}
+
+	if len(decodedFieldsVal) > 0 {
+		// Sort it so that it is deterministic
+		sort.Strings(decodedFields)
+
+		for _, v := range decodedFieldsVal {
+			v.Set(reflect.ValueOf(decodedFields))
+		}
+	}
+
+	return nil
+}
+
+// findNodeType returns the type of ast.Node
+func findNodeType() reflect.Type {
+	var nodeContainer struct {
+		Node ast.Node
+	}
+	value := reflect.ValueOf(nodeContainer).FieldByName("Node")
+	return value.Type()
+}
diff --git a/vendor/github.com/hashicorp/hcl/hcl.go b/vendor/github.com/hashicorp/hcl/hcl.go
new file mode 100644
index 0000000..575a20b
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl.go
@@ -0,0 +1,11 @@
+// Package hcl decodes HCL into usable Go structures.
+//
+// hcl input can come in either pure HCL format or JSON format.
+// It can be parsed into an AST, and then decoded into a structure,
+// or it can be decoded directly from a string into a structure.
+//
+// If you choose to parse HCL into a raw AST, the benefit is that you
+// can write custom visitor implementations to implement custom
+// semantic checks. By default, HCL does not perform any semantic
+// checks.
+package hcl
diff --git a/vendor/github.com/hashicorp/hcl/hcl/ast/ast.go b/vendor/github.com/hashicorp/hcl/hcl/ast/ast.go
new file mode 100644
index 0000000..f8bb71a
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/ast/ast.go
@@ -0,0 +1,211 @@
+// Package ast declares the types used to represent syntax trees for HCL
+// (HashiCorp Configuration Language)
+package ast
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/hcl/hcl/token"
+)
+
+// Node is an element in the abstract syntax tree.
+type Node interface {
+	node()
+	Pos() token.Pos
+}
+
+func (File) node()         {}
+func (ObjectList) node()   {}
+func (ObjectKey) node()    {}
+func (ObjectItem) node()   {}
+func (Comment) node()      {}
+func (CommentGroup) node() {}
+func (ObjectType) node()   {}
+func (LiteralType) node()  {}
+func (ListType) node()     {}
+
+// File represents a single HCL file
+type File struct {
+	Node     Node            // usually a *ObjectList
+	Comments []*CommentGroup // list of all comments in the source
+}
+
+func (f *File) Pos() token.Pos {
+	return f.Node.Pos()
+}
+
+// ObjectList represents a list of ObjectItems. An HCL file itself is an
+// ObjectList.
+type ObjectList struct {
+	Items []*ObjectItem
+}
+
+func (o *ObjectList) Add(item *ObjectItem) {
+	o.Items = append(o.Items, item)
+}
+
+// Filter filters out the objects with the given key list as a prefix.
+//
+// The returned list of objects contain ObjectItems where the keys have
+// this prefix already stripped off. This might result in objects with
+// zero-length key lists if they have no children.
+//
+// If no matches are found, an empty ObjectList (non-nil) is returned.
+func (o *ObjectList) Filter(keys ...string) *ObjectList {
+	var result ObjectList
+	for _, item := range o.Items {
+		// If there aren't enough keys, then ignore this
+		if len(item.Keys) < len(keys) {
+			continue
+		}
+
+		match := true
+		for i, key := range item.Keys[:len(keys)] {
+			key := key.Token.Value().(string)
+			if key != keys[i] && !strings.EqualFold(key, keys[i]) {
+				match = false
+				break
+			}
+		}
+		if !match {
+			continue
+		}
+
+		// Strip off the prefix from the children
+		newItem := *item
+		newItem.Keys = newItem.Keys[len(keys):]
+		result.Add(&newItem)
+	}
+
+	return &result
+}
+
+// Children returns further nested objects (key length > 0) within this
+// ObjectList. This should be used with Filter to get at child items.
+func (o *ObjectList) Children() *ObjectList {
+	var result ObjectList
+	for _, item := range o.Items {
+		if len(item.Keys) > 0 {
+			result.Add(item)
+		}
+	}
+
+	return &result
+}
+
+// Elem returns items in the list that are direct element assignments
+// (key length == 0). This should be used with Filter to get at elements.
+func (o *ObjectList) Elem() *ObjectList {
+	var result ObjectList
+	for _, item := range o.Items {
+		if len(item.Keys) == 0 {
+			result.Add(item)
+		}
+	}
+
+	return &result
+}
+
+func (o *ObjectList) Pos() token.Pos {
+	// always returns the uninitiliazed position
+	return o.Items[0].Pos()
+}
+
+// ObjectItem represents a HCL Object Item. An item is represented with a key
+// (or keys). It can be an assignment or an object (both normal and nested)
+type ObjectItem struct {
+	// keys is only one length long if it's of type assignment. If it's a
+	// nested object it can be larger than one. In that case "assign" is
+	// invalid as there is no assignments for a nested object.
+	Keys []*ObjectKey
+
+	// assign contains the position of "=", if any
+	Assign token.Pos
+
+	// val is the item itself. It can be an object,list, number, bool or a
+	// string. If key length is larger than one, val can be only of type
+	// Object.
+	Val Node
+
+	LeadComment *CommentGroup // associated lead comment
+	LineComment *CommentGroup // associated line comment
+}
+
+func (o *ObjectItem) Pos() token.Pos {
+	return o.Keys[0].Pos()
+}
+
+// ObjectKeys are either an identifier or of type string.
+type ObjectKey struct {
+	Token token.Token
+}
+
+func (o *ObjectKey) Pos() token.Pos {
+	return o.Token.Pos
+}
+
+// LiteralType represents a literal of basic type. Valid types are:
+// token.NUMBER, token.FLOAT, token.BOOL and token.STRING
+type LiteralType struct {
+	Token token.Token
+
+	// associated line comment, only when used in a list
+	LineComment *CommentGroup
+}
+
+func (l *LiteralType) Pos() token.Pos {
+	return l.Token.Pos
+}
+
+// ListStatement represents a HCL List type
+type ListType struct {
+	Lbrack token.Pos // position of "["
+	Rbrack token.Pos // position of "]"
+	List   []Node    // the elements in lexical order
+}
+
+func (l *ListType) Pos() token.Pos {
+	return l.Lbrack
+}
+
+func (l *ListType) Add(node Node) {
+	l.List = append(l.List, node)
+}
+
+// ObjectType represents a HCL Object Type
+type ObjectType struct {
+	Lbrace token.Pos   // position of "{"
+	Rbrace token.Pos   // position of "}"
+	List   *ObjectList // the nodes in lexical order
+}
+
+func (o *ObjectType) Pos() token.Pos {
+	return o.Lbrace
+}
+
+// Comment node represents a single //, # style or /*- style commment
+type Comment struct {
+	Start token.Pos // position of / or #
+	Text  string
+}
+
+func (c *Comment) Pos() token.Pos {
+	return c.Start
+}
+
+// CommentGroup node represents a sequence of comments with no other tokens and
+// no empty lines between.
+type CommentGroup struct {
+	List []*Comment // len(List) > 0
+}
+
+func (c *CommentGroup) Pos() token.Pos {
+	return c.List[0].Pos()
+}
+
+//-------------------------------------------------------------------
+// GoStringer
+//-------------------------------------------------------------------
+
+func (o *ObjectKey) GoString() string { return fmt.Sprintf("*%#v", *o) }
diff --git a/vendor/github.com/hashicorp/hcl/hcl/ast/walk.go b/vendor/github.com/hashicorp/hcl/hcl/ast/walk.go
new file mode 100644
index 0000000..ba07ad4
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/ast/walk.go
@@ -0,0 +1,52 @@
+package ast
+
+import "fmt"
+
+// WalkFunc describes a function to be called for each node during a Walk. The
+// returned node can be used to rewrite the AST. Walking stops the returned
+// bool is false.
+type WalkFunc func(Node) (Node, bool)
+
+// Walk traverses an AST in depth-first order: It starts by calling fn(node);
+// node must not be nil. If fn returns true, Walk invokes fn recursively for
+// each of the non-nil children of node, followed by a call of fn(nil). The
+// returned node of fn can be used to rewrite the passed node to fn.
+func Walk(node Node, fn WalkFunc) Node {
+	rewritten, ok := fn(node)
+	if !ok {
+		return rewritten
+	}
+
+	switch n := node.(type) {
+	case *File:
+		n.Node = Walk(n.Node, fn)
+	case *ObjectList:
+		for i, item := range n.Items {
+			n.Items[i] = Walk(item, fn).(*ObjectItem)
+		}
+	case *ObjectKey:
+		// nothing to do
+	case *ObjectItem:
+		for i, k := range n.Keys {
+			n.Keys[i] = Walk(k, fn).(*ObjectKey)
+		}
+
+		if n.Val != nil {
+			n.Val = Walk(n.Val, fn)
+		}
+	case *LiteralType:
+		// nothing to do
+	case *ListType:
+		for i, l := range n.List {
+			n.List[i] = Walk(l, fn)
+		}
+	case *ObjectType:
+		n.List = Walk(n.List, fn).(*ObjectList)
+	default:
+		// should we panic here?
+		fmt.Printf("unknown type: %T\n", n)
+	}
+
+	fn(nil)
+	return rewritten
+}
diff --git a/vendor/github.com/hashicorp/hcl/hcl/parser/error.go b/vendor/github.com/hashicorp/hcl/hcl/parser/error.go
new file mode 100644
index 0000000..5c99381
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/parser/error.go
@@ -0,0 +1,17 @@
+package parser
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/hcl/hcl/token"
+)
+
+// PosError is a parse error that contains a position.
+type PosError struct {
+	Pos token.Pos
+	Err error
+}
+
+func (e *PosError) Error() string {
+	return fmt.Sprintf("At %s: %s", e.Pos, e.Err)
+}
diff --git a/vendor/github.com/hashicorp/hcl/hcl/parser/parser.go b/vendor/github.com/hashicorp/hcl/hcl/parser/parser.go
new file mode 100644
index 0000000..cc129b6
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/parser/parser.go
@@ -0,0 +1,454 @@
+// Package parser implements a parser for HCL (HashiCorp Configuration
+// Language)
+package parser
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/hcl/hcl/ast"
+	"github.com/hashicorp/hcl/hcl/scanner"
+	"github.com/hashicorp/hcl/hcl/token"
+)
+
+type Parser struct {
+	sc *scanner.Scanner
+
+	// Last read token
+	tok       token.Token
+	commaPrev token.Token
+
+	comments    []*ast.CommentGroup
+	leadComment *ast.CommentGroup // last lead comment
+	lineComment *ast.CommentGroup // last line comment
+
+	enableTrace bool
+	indent      int
+	n           int // buffer size (max = 1)
+}
+
+func newParser(src []byte) *Parser {
+	return &Parser{
+		sc: scanner.New(src),
+	}
+}
+
+// Parse returns the fully parsed source and returns the abstract syntax tree.
+func Parse(src []byte) (*ast.File, error) {
+	p := newParser(src)
+	return p.Parse()
+}
+
+var errEofToken = errors.New("EOF token found")
+
+// Parse returns the fully parsed source and returns the abstract syntax tree.
+func (p *Parser) Parse() (*ast.File, error) {
+	f := &ast.File{}
+	var err, scerr error
+	p.sc.Error = func(pos token.Pos, msg string) {
+		scerr = &PosError{Pos: pos, Err: errors.New(msg)}
+	}
+
+	f.Node, err = p.objectList()
+	if scerr != nil {
+		return nil, scerr
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	f.Comments = p.comments
+	return f, nil
+}
+
+func (p *Parser) objectList() (*ast.ObjectList, error) {
+	defer un(trace(p, "ParseObjectList"))
+	node := &ast.ObjectList{}
+
+	for {
+		n, err := p.objectItem()
+		if err == errEofToken {
+			break // we are finished
+		}
+
+		// we don't return a nil node, because might want to use already
+		// collected items.
+		if err != nil {
+			return node, err
+		}
+
+		node.Add(n)
+	}
+	return node, nil
+}
+
+func (p *Parser) consumeComment() (comment *ast.Comment, endline int) {
+	endline = p.tok.Pos.Line
+
+	// count the endline if it's multiline comment, ie starting with /*
+	if len(p.tok.Text) > 1 && p.tok.Text[1] == '*' {
+		// don't use range here - no need to decode Unicode code points
+		for i := 0; i < len(p.tok.Text); i++ {
+			if p.tok.Text[i] == '\n' {
+				endline++
+			}
+		}
+	}
+
+	comment = &ast.Comment{Start: p.tok.Pos, Text: p.tok.Text}
+	p.tok = p.sc.Scan()
+	return
+}
+
+func (p *Parser) consumeCommentGroup(n int) (comments *ast.CommentGroup, endline int) {
+	var list []*ast.Comment
+	endline = p.tok.Pos.Line
+
+	for p.tok.Type == token.COMMENT && p.tok.Pos.Line <= endline+n {
+		var comment *ast.Comment
+		comment, endline = p.consumeComment()
+		list = append(list, comment)
+	}
+
+	// add comment group to the comments list
+	comments = &ast.CommentGroup{List: list}
+	p.comments = append(p.comments, comments)
+
+	return
+}
+
+// objectItem parses a single object item
+func (p *Parser) objectItem() (*ast.ObjectItem, error) {
+	defer un(trace(p, "ParseObjectItem"))
+
+	keys, err := p.objectKey()
+	if len(keys) > 0 && err == errEofToken {
+		// We ignore eof token here since it is an error if we didn't
+		// receive a value (but we did receive a key) for the item.
+		err = nil
+	}
+	if len(keys) > 0 && err != nil && p.tok.Type == token.RBRACE {
+		// This is a strange boolean statement, but what it means is:
+		// We have keys with no value, and we're likely in an object
+		// (since RBrace ends an object). For this, we set err to nil so
+		// we continue and get the error below of having the wrong value
+		// type.
+		err = nil
+
+		// Reset the token type so we don't think it completed fine. See
+		// objectType which uses p.tok.Type to check if we're done with
+		// the object.
+		p.tok.Type = token.EOF
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	o := &ast.ObjectItem{
+		Keys: keys,
+	}
+
+	if p.leadComment != nil {
+		o.LeadComment = p.leadComment
+		p.leadComment = nil
+	}
+
+	switch p.tok.Type {
+	case token.ASSIGN:
+		o.Assign = p.tok.Pos
+		o.Val, err = p.object()
+		if err != nil {
+			return nil, err
+		}
+	case token.LBRACE:
+		o.Val, err = p.objectType()
+		if err != nil {
+			return nil, err
+		}
+	default:
+		keyStr := make([]string, 0, len(keys))
+		for _, k := range keys {
+			keyStr = append(keyStr, k.Token.Text)
+		}
+
+		return nil, fmt.Errorf(
+			"key '%s' expected start of object ('{') or assignment ('=')",
+			strings.Join(keyStr, " "))
+	}
+
+	// do a look-ahead for line comment
+	p.scan()
+	if len(keys) > 0 && o.Val.Pos().Line == keys[0].Pos().Line && p.lineComment != nil {
+		o.LineComment = p.lineComment
+		p.lineComment = nil
+	}
+	p.unscan()
+	return o, nil
+}
+
+// objectKey parses an object key and returns a ObjectKey AST
+func (p *Parser) objectKey() ([]*ast.ObjectKey, error) {
+	keyCount := 0
+	keys := make([]*ast.ObjectKey, 0)
+
+	for {
+		tok := p.scan()
+		switch tok.Type {
+		case token.EOF:
+			// It is very important to also return the keys here as well as
+			// the error. This is because we need to be able to tell if we
+			// did parse keys prior to finding the EOF, or if we just found
+			// a bare EOF.
+			return keys, errEofToken
+		case token.ASSIGN:
+			// assignment or object only, but not nested objects. this is not
+			// allowed: `foo bar = {}`
+			if keyCount > 1 {
+				return nil, &PosError{
+					Pos: p.tok.Pos,
+					Err: fmt.Errorf("nested object expected: LBRACE got: %s", p.tok.Type),
+				}
+			}
+
+			if keyCount == 0 {
+				return nil, &PosError{
+					Pos: p.tok.Pos,
+					Err: errors.New("no object keys found!"),
+				}
+			}
+
+			return keys, nil
+		case token.LBRACE:
+			// object
+			return keys, nil
+		case token.IDENT, token.STRING:
+			keyCount++
+			keys = append(keys, &ast.ObjectKey{Token: p.tok})
+		case token.ILLEGAL:
+			fmt.Println("illegal")
+		default:
+			return keys, &PosError{
+				Pos: p.tok.Pos,
+				Err: fmt.Errorf("expected: IDENT | STRING | ASSIGN | LBRACE got: %s", p.tok.Type),
+			}
+		}
+	}
+}
+
+// object parses any type of object, such as number, bool, string, object or
+// list.
+func (p *Parser) object() (ast.Node, error) {
+	defer un(trace(p, "ParseType"))
+	tok := p.scan()
+
+	switch tok.Type {
+	case token.NUMBER, token.FLOAT, token.BOOL, token.STRING, token.HEREDOC:
+		return p.literalType()
+	case token.LBRACE:
+		return p.objectType()
+	case token.LBRACK:
+		return p.listType()
+	case token.COMMENT:
+		// implement comment
+	case token.EOF:
+		return nil, errEofToken
+	}
+
+	return nil, &PosError{
+		Pos: tok.Pos,
+		Err: fmt.Errorf("Unknown token: %+v", tok),
+	}
+}
+
+// objectType parses an object type and returns a ObjectType AST
+func (p *Parser) objectType() (*ast.ObjectType, error) {
+	defer un(trace(p, "ParseObjectType"))
+
+	// we assume that the currently scanned token is a LBRACE
+	o := &ast.ObjectType{
+		Lbrace: p.tok.Pos,
+	}
+
+	l, err := p.objectList()
+
+	// if we hit RBRACE, we are good to go (means we parsed all Items), if it's
+	// not a RBRACE, it's an syntax error and we just return it.
+	if err != nil && p.tok.Type != token.RBRACE {
+		return nil, err
+	}
+
+	// If there is no error, we should be at a RBRACE to end the object
+	if p.tok.Type != token.RBRACE {
+		return nil, fmt.Errorf("object expected closing RBRACE got: %s", p.tok.Type)
+	}
+
+	o.List = l
+	o.Rbrace = p.tok.Pos // advanced via parseObjectList
+	return o, nil
+}
+
+// listType parses a list type and returns a ListType AST
+func (p *Parser) listType() (*ast.ListType, error) {
+	defer un(trace(p, "ParseListType"))
+
+	// we assume that the currently scanned token is a LBRACK
+	l := &ast.ListType{
+		Lbrack: p.tok.Pos,
+	}
+
+	needComma := false
+	for {
+		tok := p.scan()
+		switch tok.Type {
+		case token.NUMBER, token.FLOAT, token.STRING, token.HEREDOC:
+			if needComma {
+				return nil, &PosError{
+					Pos: tok.Pos,
+					Err: fmt.Errorf("unexpected token: %s. Expecting %s", tok.Type, token.COMMA),
+				}
+			}
+
+			node, err := p.literalType()
+			if err != nil {
+				return nil, err
+			}
+
+			l.Add(node)
+			needComma = true
+		case token.COMMA:
+			// get next list item or we are at the end
+			// do a look-ahead for line comment
+			p.scan()
+			if p.lineComment != nil {
+				lit, ok := l.List[len(l.List)-1].(*ast.LiteralType)
+				if ok {
+					lit.LineComment = p.lineComment
+					l.List[len(l.List)-1] = lit
+					p.lineComment = nil
+				}
+			}
+			p.unscan()
+
+			needComma = false
+			continue
+		case token.BOOL:
+			// TODO(arslan) should we support? not supported by HCL yet
+		case token.LBRACK:
+			// TODO(arslan) should we support nested lists? Even though it's
+			// written in README of HCL, it's not a part of the grammar
+			// (not defined in parse.y)
+		case token.RBRACK:
+			// finished
+			l.Rbrack = p.tok.Pos
+			return l, nil
+		default:
+			return nil, &PosError{
+				Pos: tok.Pos,
+				Err: fmt.Errorf("unexpected token while parsing list: %s", tok.Type),
+			}
+		}
+	}
+}
+
+// literalType parses a literal type and returns a LiteralType AST
+func (p *Parser) literalType() (*ast.LiteralType, error) {
+	defer un(trace(p, "ParseLiteral"))
+
+	return &ast.LiteralType{
+		Token: p.tok,
+	}, nil
+}
+
+// scan returns the next token from the underlying scanner. If a token has
+// been unscanned then read that instead. In the process, it collects any
+// comment groups encountered, and remembers the last lead and line comments.
+func (p *Parser) scan() token.Token {
+	// If we have a token on the buffer, then return it.
+	if p.n != 0 {
+		p.n = 0
+		return p.tok
+	}
+
+	// Otherwise read the next token from the scanner and Save it to the buffer
+	// in case we unscan later.
+	prev := p.tok
+	p.tok = p.sc.Scan()
+
+	if p.tok.Type == token.COMMENT {
+		var comment *ast.CommentGroup
+		var endline int
+
+		// fmt.Printf("p.tok.Pos.Line = %+v prev: %d endline %d \n",
+		// p.tok.Pos.Line, prev.Pos.Line, endline)
+		if p.tok.Pos.Line == prev.Pos.Line {
+			// The comment is on same line as the previous token; it
+			// cannot be a lead comment but may be a line comment.
+			comment, endline = p.consumeCommentGroup(0)
+			if p.tok.Pos.Line != endline {
+				// The next token is on a different line, thus
+				// the last comment group is a line comment.
+				p.lineComment = comment
+			}
+		}
+
+		// consume successor comments, if any
+		endline = -1
+		for p.tok.Type == token.COMMENT {
+			comment, endline = p.consumeCommentGroup(1)
+		}
+
+		if endline+1 == p.tok.Pos.Line && p.tok.Type != token.RBRACE {
+			switch p.tok.Type {
+			case token.RBRACE, token.RBRACK:
+				// Do not count for these cases
+			default:
+				// The next token is following on the line immediately after the
+				// comment group, thus the last comment group is a lead comment.
+				p.leadComment = comment
+			}
+		}
+
+	}
+
+	return p.tok
+}
+
+// unscan pushes the previously read token back onto the buffer.
+func (p *Parser) unscan() {
+	p.n = 1
+}
+
+// ----------------------------------------------------------------------------
+// Parsing support
+
+func (p *Parser) printTrace(a ...interface{}) {
+	if !p.enableTrace {
+		return
+	}
+
+	const dots = ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "
+	const n = len(dots)
+	fmt.Printf("%5d:%3d: ", p.tok.Pos.Line, p.tok.Pos.Column)
+
+	i := 2 * p.indent
+	for i > n {
+		fmt.Print(dots)
+		i -= n
+	}
+	// i <= n
+	fmt.Print(dots[0:i])
+	fmt.Println(a...)
+}
+
+func trace(p *Parser, msg string) *Parser {
+	p.printTrace(msg, "(")
+	p.indent++
+	return p
+}
+
+// Usage pattern: defer un(trace(p, "..."))
+func un(p *Parser) {
+	p.indent--
+	p.printTrace(")")
+}
diff --git a/vendor/github.com/hashicorp/hcl/hcl/scanner/scanner.go b/vendor/github.com/hashicorp/hcl/hcl/scanner/scanner.go
new file mode 100644
index 0000000..a3f34a7
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/scanner/scanner.go
@@ -0,0 +1,629 @@
+// Package scanner implements a scanner for HCL (HashiCorp Configuration
+// Language) source text.
+package scanner
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"regexp"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/hashicorp/hcl/hcl/token"
+)
+
+// eof represents a marker rune for the end of the reader.
+const eof = rune(0)
+
+// Scanner defines a lexical scanner
+type Scanner struct {
+	buf *bytes.Buffer // Source buffer for advancing and scanning
+	src []byte        // Source buffer for immutable access
+
+	// Source Position
+	srcPos  token.Pos // current position
+	prevPos token.Pos // previous position, used for peek() method
+
+	lastCharLen int // length of last character in bytes
+	lastLineLen int // length of last line in characters (for correct column reporting)
+
+	tokStart int // token text start position
+	tokEnd   int // token text end  position
+
+	// Error is called for each error encountered. If no Error
+	// function is set, the error is reported to os.Stderr.
+	Error func(pos token.Pos, msg string)
+
+	// ErrorCount is incremented by one for each error encountered.
+	ErrorCount int
+
+	// tokPos is the start position of most recently scanned token; set by
+	// Scan. The Filename field is always left untouched by the Scanner.  If
+	// an error is reported (via Error) and Position is invalid, the scanner is
+	// not inside a token.
+	tokPos token.Pos
+}
+
+// New creates and initializes a new instance of Scanner using src as
+// its source content.
+func New(src []byte) *Scanner {
+	// even though we accept a src, we read from a io.Reader compatible type
+	// (*bytes.Buffer). So in the future we might easily change it to streaming
+	// read.
+	b := bytes.NewBuffer(src)
+	s := &Scanner{
+		buf: b,
+		src: src,
+	}
+
+	// srcPosition always starts with 1
+	s.srcPos.Line = 1
+	return s
+}
+
+// next reads the next rune from the bufferred reader. Returns the rune(0) if
+// an error occurs (or io.EOF is returned).
+func (s *Scanner) next() rune {
+	ch, size, err := s.buf.ReadRune()
+	if err != nil {
+		// advance for error reporting
+		s.srcPos.Column++
+		s.srcPos.Offset += size
+		s.lastCharLen = size
+		return eof
+	}
+
+	if ch == utf8.RuneError && size == 1 {
+		s.srcPos.Column++
+		s.srcPos.Offset += size
+		s.lastCharLen = size
+		s.err("illegal UTF-8 encoding")
+		return ch
+	}
+
+	// remember last position
+	s.prevPos = s.srcPos
+
+	s.srcPos.Column++
+	s.lastCharLen = size
+	s.srcPos.Offset += size
+
+	if ch == '\n' {
+		s.srcPos.Line++
+		s.lastLineLen = s.srcPos.Column
+		s.srcPos.Column = 0
+	}
+
+	// debug
+	// fmt.Printf("ch: %q, offset:column: %d:%d\n", ch, s.srcPos.Offset, s.srcPos.Column)
+	return ch
+}
+
+// unread unreads the previous read Rune and updates the source position
+func (s *Scanner) unread() {
+	if err := s.buf.UnreadRune(); err != nil {
+		panic(err) // this is user fault, we should catch it
+	}
+	s.srcPos = s.prevPos // put back last position
+}
+
+// peek returns the next rune without advancing the reader.
+func (s *Scanner) peek() rune {
+	peek, _, err := s.buf.ReadRune()
+	if err != nil {
+		return eof
+	}
+
+	s.buf.UnreadRune()
+	return peek
+}
+
+// Scan scans the next token and returns the token.
+func (s *Scanner) Scan() token.Token {
+	ch := s.next()
+
+	// skip white space
+	for isWhitespace(ch) {
+		ch = s.next()
+	}
+
+	var tok token.Type
+
+	// token text markings
+	s.tokStart = s.srcPos.Offset - s.lastCharLen
+
+	// token position, initial next() is moving the offset by one(size of rune
+	// actually), though we are interested with the starting point
+	s.tokPos.Offset = s.srcPos.Offset - s.lastCharLen
+	if s.srcPos.Column > 0 {
+		// common case: last character was not a '\n'
+		s.tokPos.Line = s.srcPos.Line
+		s.tokPos.Column = s.srcPos.Column
+	} else {
+		// last character was a '\n'
+		// (we cannot be at the beginning of the source
+		// since we have called next() at least once)
+		s.tokPos.Line = s.srcPos.Line - 1
+		s.tokPos.Column = s.lastLineLen
+	}
+
+	switch {
+	case isLetter(ch):
+		tok = token.IDENT
+		lit := s.scanIdentifier()
+		if lit == "true" || lit == "false" {
+			tok = token.BOOL
+		}
+	case isDecimal(ch):
+		tok = s.scanNumber(ch)
+	default:
+		switch ch {
+		case eof:
+			tok = token.EOF
+		case '"':
+			tok = token.STRING
+			s.scanString()
+		case '#', '/':
+			tok = token.COMMENT
+			s.scanComment(ch)
+		case '.':
+			tok = token.PERIOD
+			ch = s.peek()
+			if isDecimal(ch) {
+				tok = token.FLOAT
+				ch = s.scanMantissa(ch)
+				ch = s.scanExponent(ch)
+			}
+		case '<':
+			tok = token.HEREDOC
+			s.scanHeredoc()
+		case '[':
+			tok = token.LBRACK
+		case ']':
+			tok = token.RBRACK
+		case '{':
+			tok = token.LBRACE
+		case '}':
+			tok = token.RBRACE
+		case ',':
+			tok = token.COMMA
+		case '=':
+			tok = token.ASSIGN
+		case '+':
+			tok = token.ADD
+		case '-':
+			if isDecimal(s.peek()) {
+				ch := s.next()
+				tok = s.scanNumber(ch)
+			} else {
+				tok = token.SUB
+			}
+		default:
+			s.err("illegal char")
+		}
+	}
+
+	// finish token ending
+	s.tokEnd = s.srcPos.Offset
+
+	// create token literal
+	var tokenText string
+	if s.tokStart >= 0 {
+		tokenText = string(s.src[s.tokStart:s.tokEnd])
+	}
+	s.tokStart = s.tokEnd // ensure idempotency of tokenText() call
+
+	return token.Token{
+		Type: tok,
+		Pos:  s.tokPos,
+		Text: tokenText,
+	}
+}
+
+func (s *Scanner) scanComment(ch rune) {
+	// single line comments
+	if ch == '#' || (ch == '/' && s.peek() != '*') {
+		ch = s.next()
+		for ch != '\n' && ch >= 0 && ch != eof {
+			ch = s.next()
+		}
+		if ch != eof && ch >= 0 {
+			s.unread()
+		}
+		return
+	}
+
+	// be sure we get the character after /* This allows us to find comment's
+	// that are not erminated
+	if ch == '/' {
+		s.next()
+		ch = s.next() // read character after "/*"
+	}
+
+	// look for /* - style comments
+	for {
+		if ch < 0 || ch == eof {
+			s.err("comment not terminated")
+			break
+		}
+
+		ch0 := ch
+		ch = s.next()
+		if ch0 == '*' && ch == '/' {
+			break
+		}
+	}
+}
+
+// scanNumber scans a HCL number definition starting with the given rune
+func (s *Scanner) scanNumber(ch rune) token.Type {
+	if ch == '0' {
+		// check for hexadecimal, octal or float
+		ch = s.next()
+		if ch == 'x' || ch == 'X' {
+			// hexadecimal
+			ch = s.next()
+			found := false
+			for isHexadecimal(ch) {
+				ch = s.next()
+				found = true
+			}
+
+			if !found {
+				s.err("illegal hexadecimal number")
+			}
+
+			if ch != eof {
+				s.unread()
+			}
+
+			return token.NUMBER
+		}
+
+		// now it's either something like: 0421(octal) or 0.1231(float)
+		illegalOctal := false
+		for isDecimal(ch) {
+			ch = s.next()
+			if ch == '8' || ch == '9' {
+				// this is just a possibility. For example 0159 is illegal, but
+				// 0159.23 is valid. So we mark a possible illegal octal. If
+				// the next character is not a period, we'll print the error.
+				illegalOctal = true
+			}
+		}
+
+		if ch == 'e' || ch == 'E' {
+			ch = s.scanExponent(ch)
+			return token.FLOAT
+		}
+
+		if ch == '.' {
+			ch = s.scanFraction(ch)
+
+			if ch == 'e' || ch == 'E' {
+				ch = s.next()
+				ch = s.scanExponent(ch)
+			}
+			return token.FLOAT
+		}
+
+		if illegalOctal {
+			s.err("illegal octal number")
+		}
+
+		if ch != eof {
+			s.unread()
+		}
+		return token.NUMBER
+	}
+
+	s.scanMantissa(ch)
+	ch = s.next() // seek forward
+	if ch == 'e' || ch == 'E' {
+		ch = s.scanExponent(ch)
+		return token.FLOAT
+	}
+
+	if ch == '.' {
+		ch = s.scanFraction(ch)
+		if ch == 'e' || ch == 'E' {
+			ch = s.next()
+			ch = s.scanExponent(ch)
+		}
+		return token.FLOAT
+	}
+
+	if ch != eof {
+		s.unread()
+	}
+	return token.NUMBER
+}
+
+// scanMantissa scans the mantissa begining from the rune. It returns the next
+// non decimal rune. It's used to determine wheter it's a fraction or exponent.
+func (s *Scanner) scanMantissa(ch rune) rune {
+	scanned := false
+	for isDecimal(ch) {
+		ch = s.next()
+		scanned = true
+	}
+
+	if scanned && ch != eof {
+		s.unread()
+	}
+	return ch
+}
+
+// scanFraction scans the fraction after the '.' rune
+func (s *Scanner) scanFraction(ch rune) rune {
+	if ch == '.' {
+		ch = s.peek() // we peek just to see if we can move forward
+		ch = s.scanMantissa(ch)
+	}
+	return ch
+}
+
+// scanExponent scans the remaining parts of an exponent after the 'e' or 'E'
+// rune.
+func (s *Scanner) scanExponent(ch rune) rune {
+	if ch == 'e' || ch == 'E' {
+		ch = s.next()
+		if ch == '-' || ch == '+' {
+			ch = s.next()
+		}
+		ch = s.scanMantissa(ch)
+	}
+	return ch
+}
+
+// scanHeredoc scans a heredoc string
+func (s *Scanner) scanHeredoc() {
+	// Scan the second '<' in example: '<<EOF'
+	if s.next() != '<' {
+		s.err("heredoc expected second '<', didn't see it")
+		return
+	}
+
+	// Get the original offset so we can read just the heredoc ident
+	offs := s.srcPos.Offset
+
+	// Scan the identifier
+	ch := s.next()
+
+	// Indented heredoc syntax
+	if ch == '-' {
+		ch = s.next()
+	}
+
+	for isLetter(ch) || isDigit(ch) {
+		ch = s.next()
+	}
+
+	// If we reached an EOF then that is not good
+	if ch == eof {
+		s.err("heredoc not terminated")
+		return
+	}
+
+	// Ignore the '\r' in Windows line endings
+	if ch == '\r' {
+		if s.peek() == '\n' {
+			ch = s.next()
+		}
+	}
+
+	// If we didn't reach a newline then that is also not good
+	if ch != '\n' {
+		s.err("invalid characters in heredoc anchor")
+		return
+	}
+
+	// Read the identifier
+	identBytes := s.src[offs : s.srcPos.Offset-s.lastCharLen]
+	if len(identBytes) == 0 {
+		s.err("zero-length heredoc anchor")
+		return
+	}
+
+	var identRegexp *regexp.Regexp
+	if identBytes[0] == '-' {
+		identRegexp = regexp.MustCompile(fmt.Sprintf(`[[:space:]]*%s\z`, identBytes[1:]))
+	} else {
+		identRegexp = regexp.MustCompile(fmt.Sprintf(`[[:space:]]*%s\z`, identBytes))
+	}
+
+	// Read the actual string value
+	lineStart := s.srcPos.Offset
+	for {
+		ch := s.next()
+
+		// Special newline handling.
+		if ch == '\n' {
+			// Math is fast, so we first compare the byte counts to see if we have a chance
+			// of seeing the same identifier - if the length is less than the number of bytes
+			// in the identifier, this cannot be a valid terminator.
+			lineBytesLen := s.srcPos.Offset - s.lastCharLen - lineStart
+			if lineBytesLen >= len(identBytes) && identRegexp.Match(s.src[lineStart:s.srcPos.Offset-s.lastCharLen]) {
+				break
+			}
+
+			// Not an anchor match, record the start of a new line
+			lineStart = s.srcPos.Offset
+		}
+
+		if ch == eof {
+			s.err("heredoc not terminated")
+			return
+		}
+	}
+
+	return
+}
+
+// scanString scans a quoted string
+func (s *Scanner) scanString() {
+	braces := 0
+	for {
+		// '"' opening already consumed
+		// read character after quote
+		ch := s.next()
+
+		if ch == '\n' || ch < 0 || ch == eof {
+			s.err("literal not terminated")
+			return
+		}
+
+		if ch == '"' && braces == 0 {
+			break
+		}
+
+		// If we're going into a ${} then we can ignore quotes for awhile
+		if braces == 0 && ch == '$' && s.peek() == '{' {
+			braces++
+			s.next()
+		} else if braces > 0 && ch == '{' {
+			braces++
+		}
+		if braces > 0 && ch == '}' {
+			braces--
+		}
+
+		if ch == '\\' {
+			s.scanEscape()
+		}
+	}
+
+	return
+}
+
+// scanEscape scans an escape sequence
+func (s *Scanner) scanEscape() rune {
+	// http://en.cppreference.com/w/cpp/language/escape
+	ch := s.next() // read character after '/'
+	switch ch {
+	case 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', '"':
+		// nothing to do
+	case '0', '1', '2', '3', '4', '5', '6', '7':
+		// octal notation
+		ch = s.scanDigits(ch, 8, 3)
+	case 'x':
+		// hexademical notation
+		ch = s.scanDigits(s.next(), 16, 2)
+	case 'u':
+		// universal character name
+		ch = s.scanDigits(s.next(), 16, 4)
+	case 'U':
+		// universal character name
+		ch = s.scanDigits(s.next(), 16, 8)
+	default:
+		s.err("illegal char escape")
+	}
+	return ch
+}
+
+// scanDigits scans a rune with the given base for n times. For example an
+// octal notation \184 would yield in scanDigits(ch, 8, 3)
+func (s *Scanner) scanDigits(ch rune, base, n int) rune {
+	for n > 0 && digitVal(ch) < base {
+		ch = s.next()
+		n--
+	}
+	if n > 0 {
+		s.err("illegal char escape")
+	}
+
+	// we scanned all digits, put the last non digit char back
+	s.unread()
+	return ch
+}
+
+// scanIdentifier scans an identifier and returns the literal string
+func (s *Scanner) scanIdentifier() string {
+	offs := s.srcPos.Offset - s.lastCharLen
+	ch := s.next()
+	for isLetter(ch) || isDigit(ch) || ch == '-' || ch == '.' {
+		ch = s.next()
+	}
+
+	if ch != eof {
+		s.unread() // we got identifier, put back latest char
+	}
+
+	return string(s.src[offs:s.srcPos.Offset])
+}
+
+// recentPosition returns the position of the character immediately after the
+// character or token returned by the last call to Scan.
+func (s *Scanner) recentPosition() (pos token.Pos) {
+	pos.Offset = s.srcPos.Offset - s.lastCharLen
+	switch {
+	case s.srcPos.Column > 0:
+		// common case: last character was not a '\n'
+		pos.Line = s.srcPos.Line
+		pos.Column = s.srcPos.Column
+	case s.lastLineLen > 0:
+		// last character was a '\n'
+		// (we cannot be at the beginning of the source
+		// since we have called next() at least once)
+		pos.Line = s.srcPos.Line - 1
+		pos.Column = s.lastLineLen
+	default:
+		// at the beginning of the source
+		pos.Line = 1
+		pos.Column = 1
+	}
+	return
+}
+
+// err prints the error of any scanning to s.Error function. If the function is
+// not defined, by default it prints them to os.Stderr
+func (s *Scanner) err(msg string) {
+	s.ErrorCount++
+	pos := s.recentPosition()
+
+	if s.Error != nil {
+		s.Error(pos, msg)
+		return
+	}
+
+	fmt.Fprintf(os.Stderr, "%s: %s\n", pos, msg)
+}
+
+// isHexadecimal returns true if the given rune is a letter
+func isLetter(ch rune) bool {
+	return 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' || ch == '_' || ch >= 0x80 && unicode.IsLetter(ch)
+}
+
+// isDigit returns true if the given rune is a decimal digit
+func isDigit(ch rune) bool {
+	return '0' <= ch && ch <= '9' || ch >= 0x80 && unicode.IsDigit(ch)
+}
+
+// isDecimal returns true if the given rune is a decimal number
+func isDecimal(ch rune) bool {
+	return '0' <= ch && ch <= '9'
+}
+
+// isHexadecimal returns true if the given rune is an hexadecimal number
+func isHexadecimal(ch rune) bool {
+	return '0' <= ch && ch <= '9' || 'a' <= ch && ch <= 'f' || 'A' <= ch && ch <= 'F'
+}
+
+// isWhitespace returns true if the rune is a space, tab, newline or carriage return
+func isWhitespace(ch rune) bool {
+	return ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'
+}
+
+// digitVal returns the integer value of a given octal,decimal or hexadecimal rune
+func digitVal(ch rune) int {
+	switch {
+	case '0' <= ch && ch <= '9':
+		return int(ch - '0')
+	case 'a' <= ch && ch <= 'f':
+		return int(ch - 'a' + 10)
+	case 'A' <= ch && ch <= 'F':
+		return int(ch - 'A' + 10)
+	}
+	return 16 // larger than any legal digit val
+}
diff --git a/vendor/github.com/hashicorp/hcl/hcl/strconv/quote.go b/vendor/github.com/hashicorp/hcl/hcl/strconv/quote.go
new file mode 100644
index 0000000..e87ac63
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/strconv/quote.go
@@ -0,0 +1,245 @@
+package strconv
+
+import (
+	"errors"
+	"unicode/utf8"
+)
+
+// ErrSyntax indicates that a value does not have the right syntax for the target type.
+var ErrSyntax = errors.New("invalid syntax")
+
+// Unquote interprets s as a single-quoted, double-quoted,
+// or backquoted Go string literal, returning the string value
+// that s quotes.  (If s is single-quoted, it would be a Go
+// character literal; Unquote returns the corresponding
+// one-character string.)
+func Unquote(s string) (t string, err error) {
+	n := len(s)
+	if n < 2 {
+		return "", ErrSyntax
+	}
+	quote := s[0]
+	if quote != s[n-1] {
+		return "", ErrSyntax
+	}
+	s = s[1 : n-1]
+
+	if quote != '"' {
+		return "", ErrSyntax
+	}
+	if contains(s, '\n') {
+		return "", ErrSyntax
+	}
+
+	// Is it trivial?  Avoid allocation.
+	if !contains(s, '\\') && !contains(s, quote) && !contains(s, '$') {
+		switch quote {
+		case '"':
+			return s, nil
+		case '\'':
+			r, size := utf8.DecodeRuneInString(s)
+			if size == len(s) && (r != utf8.RuneError || size != 1) {
+				return s, nil
+			}
+		}
+	}
+
+	var runeTmp [utf8.UTFMax]byte
+	buf := make([]byte, 0, 3*len(s)/2) // Try to avoid more allocations.
+	for len(s) > 0 {
+		// If we're starting a '${}' then let it through un-unquoted.
+		// Specifically: we don't unquote any characters within the `${}`
+		// section, except for escaped quotes, which we handle specifically.
+		if s[0] == '$' && len(s) > 1 && s[1] == '{' {
+			buf = append(buf, '$', '{')
+			s = s[2:]
+
+			// Continue reading until we find the closing brace, copying as-is
+			braces := 1
+			for len(s) > 0 && braces > 0 {
+				r, size := utf8.DecodeRuneInString(s)
+				if r == utf8.RuneError {
+					return "", ErrSyntax
+				}
+
+				s = s[size:]
+
+				// We special case escaped double quotes in interpolations, converting
+				// them to straight double quotes.
+				if r == '\\' {
+					if q, _ := utf8.DecodeRuneInString(s); q == '"' {
+						continue
+					}
+				}
+
+				n := utf8.EncodeRune(runeTmp[:], r)
+				buf = append(buf, runeTmp[:n]...)
+
+				switch r {
+				case '{':
+					braces++
+				case '}':
+					braces--
+				}
+			}
+			if braces != 0 {
+				return "", ErrSyntax
+			}
+			if len(s) == 0 {
+				// If there's no string left, we're done!
+				break
+			} else {
+				// If there's more left, we need to pop back up to the top of the loop
+				// in case there's another interpolation in this string.
+				continue
+			}
+		}
+
+		c, multibyte, ss, err := unquoteChar(s, quote)
+		if err != nil {
+			return "", err
+		}
+		s = ss
+		if c < utf8.RuneSelf || !multibyte {
+			buf = append(buf, byte(c))
+		} else {
+			n := utf8.EncodeRune(runeTmp[:], c)
+			buf = append(buf, runeTmp[:n]...)
+		}
+		if quote == '\'' && len(s) != 0 {
+			// single-quoted must be single character
+			return "", ErrSyntax
+		}
+	}
+	return string(buf), nil
+}
+
+// contains reports whether the string contains the byte c.
+func contains(s string, c byte) bool {
+	for i := 0; i < len(s); i++ {
+		if s[i] == c {
+			return true
+		}
+	}
+	return false
+}
+
+func unhex(b byte) (v rune, ok bool) {
+	c := rune(b)
+	switch {
+	case '0' <= c && c <= '9':
+		return c - '0', true
+	case 'a' <= c && c <= 'f':
+		return c - 'a' + 10, true
+	case 'A' <= c && c <= 'F':
+		return c - 'A' + 10, true
+	}
+	return
+}
+
+func unquoteChar(s string, quote byte) (value rune, multibyte bool, tail string, err error) {
+	// easy cases
+	switch c := s[0]; {
+	case c == quote && (quote == '\'' || quote == '"'):
+		err = ErrSyntax
+		return
+	case c >= utf8.RuneSelf:
+		r, size := utf8.DecodeRuneInString(s)
+		return r, true, s[size:], nil
+	case c != '\\':
+		return rune(s[0]), false, s[1:], nil
+	}
+
+	// hard case: c is backslash
+	if len(s) <= 1 {
+		err = ErrSyntax
+		return
+	}
+	c := s[1]
+	s = s[2:]
+
+	switch c {
+	case 'a':
+		value = '\a'
+	case 'b':
+		value = '\b'
+	case 'f':
+		value = '\f'
+	case 'n':
+		value = '\n'
+	case 'r':
+		value = '\r'
+	case 't':
+		value = '\t'
+	case 'v':
+		value = '\v'
+	case 'x', 'u', 'U':
+		n := 0
+		switch c {
+		case 'x':
+			n = 2
+		case 'u':
+			n = 4
+		case 'U':
+			n = 8
+		}
+		var v rune
+		if len(s) < n {
+			err = ErrSyntax
+			return
+		}
+		for j := 0; j < n; j++ {
+			x, ok := unhex(s[j])
+			if !ok {
+				err = ErrSyntax
+				return
+			}
+			v = v<<4 | x
+		}
+		s = s[n:]
+		if c == 'x' {
+			// single-byte string, possibly not UTF-8
+			value = v
+			break
+		}
+		if v > utf8.MaxRune {
+			err = ErrSyntax
+			return
+		}
+		value = v
+		multibyte = true
+	case '0', '1', '2', '3', '4', '5', '6', '7':
+		v := rune(c) - '0'
+		if len(s) < 2 {
+			err = ErrSyntax
+			return
+		}
+		for j := 0; j < 2; j++ { // one digit already; two more
+			x := rune(s[j]) - '0'
+			if x < 0 || x > 7 {
+				err = ErrSyntax
+				return
+			}
+			v = (v << 3) | x
+		}
+		s = s[2:]
+		if v > 255 {
+			err = ErrSyntax
+			return
+		}
+		value = v
+	case '\\':
+		value = '\\'
+	case '\'', '"':
+		if c != quote {
+			err = ErrSyntax
+			return
+		}
+		value = rune(c)
+	default:
+		err = ErrSyntax
+		return
+	}
+	tail = s
+	return
+}
diff --git a/vendor/github.com/hashicorp/hcl/hcl/token/position.go b/vendor/github.com/hashicorp/hcl/hcl/token/position.go
new file mode 100644
index 0000000..59c1bb7
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/token/position.go
@@ -0,0 +1,46 @@
+package token
+
+import "fmt"
+
+// Pos describes an arbitrary source position
+// including the file, line, and column location.
+// A Position is valid if the line number is > 0.
+type Pos struct {
+	Filename string // filename, if any
+	Offset   int    // offset, starting at 0
+	Line     int    // line number, starting at 1
+	Column   int    // column number, starting at 1 (character count)
+}
+
+// IsValid returns true if the position is valid.
+func (p *Pos) IsValid() bool { return p.Line > 0 }
+
+// String returns a string in one of several forms:
+//
+//	file:line:column    valid position with file name
+//	line:column         valid position without file name
+//	file                invalid position with file name
+//	-                   invalid position without file name
+func (p Pos) String() string {
+	s := p.Filename
+	if p.IsValid() {
+		if s != "" {
+			s += ":"
+		}
+		s += fmt.Sprintf("%d:%d", p.Line, p.Column)
+	}
+	if s == "" {
+		s = "-"
+	}
+	return s
+}
+
+// Before reports whether the position p is before u.
+func (p Pos) Before(u Pos) bool {
+	return u.Offset > p.Offset || u.Line > p.Line
+}
+
+// After reports whether the position p is after u.
+func (p Pos) After(u Pos) bool {
+	return u.Offset < p.Offset || u.Line < p.Line
+}
diff --git a/vendor/github.com/hashicorp/hcl/hcl/token/token.go b/vendor/github.com/hashicorp/hcl/hcl/token/token.go
new file mode 100644
index 0000000..6e99498
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/hcl/token/token.go
@@ -0,0 +1,214 @@
+// Package token defines constants representing the lexical tokens for HCL
+// (HashiCorp Configuration Language)
+package token
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	hclstrconv "github.com/hashicorp/hcl/hcl/strconv"
+)
+
+// Token defines a single HCL token which can be obtained via the Scanner
+type Token struct {
+	Type Type
+	Pos  Pos
+	Text string
+	JSON bool
+}
+
+// Type is the set of lexical tokens of the HCL (HashiCorp Configuration Language)
+type Type int
+
+const (
+	// Special tokens
+	ILLEGAL Type = iota
+	EOF
+	COMMENT
+
+	identifier_beg
+	IDENT // literals
+	literal_beg
+	NUMBER  // 12345
+	FLOAT   // 123.45
+	BOOL    // true,false
+	STRING  // "abc"
+	HEREDOC // <<FOO\nbar\nFOO
+	literal_end
+	identifier_end
+
+	operator_beg
+	LBRACK // [
+	LBRACE // {
+	COMMA  // ,
+	PERIOD // .
+
+	RBRACK // ]
+	RBRACE // }
+
+	ASSIGN // =
+	ADD    // +
+	SUB    // -
+	operator_end
+)
+
+var tokens = [...]string{
+	ILLEGAL: "ILLEGAL",
+
+	EOF:     "EOF",
+	COMMENT: "COMMENT",
+
+	IDENT:  "IDENT",
+	NUMBER: "NUMBER",
+	FLOAT:  "FLOAT",
+	BOOL:   "BOOL",
+	STRING: "STRING",
+
+	LBRACK:  "LBRACK",
+	LBRACE:  "LBRACE",
+	COMMA:   "COMMA",
+	PERIOD:  "PERIOD",
+	HEREDOC: "HEREDOC",
+
+	RBRACK: "RBRACK",
+	RBRACE: "RBRACE",
+
+	ASSIGN: "ASSIGN",
+	ADD:    "ADD",
+	SUB:    "SUB",
+}
+
+// String returns the string corresponding to the token tok.
+func (t Type) String() string {
+	s := ""
+	if 0 <= t && t < Type(len(tokens)) {
+		s = tokens[t]
+	}
+	if s == "" {
+		s = "token(" + strconv.Itoa(int(t)) + ")"
+	}
+	return s
+}
+
+// IsIdentifier returns true for tokens corresponding to identifiers and basic
+// type literals; it returns false otherwise.
+func (t Type) IsIdentifier() bool { return identifier_beg < t && t < identifier_end }
+
+// IsLiteral returns true for tokens corresponding to basic type literals; it
+// returns false otherwise.
+func (t Type) IsLiteral() bool { return literal_beg < t && t < literal_end }
+
+// IsOperator returns true for tokens corresponding to operators and
+// delimiters; it returns false otherwise.
+func (t Type) IsOperator() bool { return operator_beg < t && t < operator_end }
+
+// String returns the token's literal text. Note that this is only
+// applicable for certain token types, such as token.IDENT,
+// token.STRING, etc..
+func (t Token) String() string {
+	return fmt.Sprintf("%s %s %s", t.Pos.String(), t.Type.String(), t.Text)
+}
+
+// Value returns the properly typed value for this token. The type of
+// the returned interface{} is guaranteed based on the Type field.
+//
+// This can only be called for literal types. If it is called for any other
+// type, this will panic.
+func (t Token) Value() interface{} {
+	switch t.Type {
+	case BOOL:
+		if t.Text == "true" {
+			return true
+		} else if t.Text == "false" {
+			return false
+		}
+
+		panic("unknown bool value: " + t.Text)
+	case FLOAT:
+		v, err := strconv.ParseFloat(t.Text, 64)
+		if err != nil {
+			panic(err)
+		}
+
+		return float64(v)
+	case NUMBER:
+		v, err := strconv.ParseInt(t.Text, 0, 64)
+		if err != nil {
+			panic(err)
+		}
+
+		return int64(v)
+	case IDENT:
+		return t.Text
+	case HEREDOC:
+		return unindentHeredoc(t.Text)
+	case STRING:
+		// Determine the Unquote method to use. If it came from JSON,
+		// then we need to use the built-in unquote since we have to
+		// escape interpolations there.
+		f := hclstrconv.Unquote
+		if t.JSON {
+			f = strconv.Unquote
+		}
+
+		v, err := f(t.Text)
+		if err != nil {
+			panic(fmt.Sprintf("unquote %s err: %s", t.Text, err))
+		}
+
+		return v
+	default:
+		panic(fmt.Sprintf("unimplemented Value for type: %s", t.Type))
+	}
+}
+
+// unindentHeredoc returns the string content of a HEREDOC if it is started with <<
+// and the content of a HEREDOC with the hanging indent removed if it is started with
+// a <<-, and the terminating line is at least as indented as the least indented line.
+func unindentHeredoc(heredoc string) string {
+	// We need to find the end of the marker
+	idx := strings.IndexByte(heredoc, '\n')
+	if idx == -1 {
+		panic("heredoc doesn't contain newline")
+	}
+
+	unindent := heredoc[2] == '-'
+
+	// We can optimize if the heredoc isn't marked for indentation
+	if !unindent {
+		return string(heredoc[idx+1 : len(heredoc)-idx+1])
+	}
+
+	// We need to unindent each line based on the indentation level of the marker
+	lines := strings.Split(string(heredoc[idx+1:len(heredoc)-idx+2]), "\n")
+	whitespacePrefix := lines[len(lines)-1]
+
+	isIndented := true
+	for _, v := range lines {
+		if strings.HasPrefix(v, whitespacePrefix) {
+			continue
+		}
+
+		isIndented = false
+		break
+	}
+
+	// If all lines are not at least as indented as the terminating mark, return the
+	// heredoc as is, but trim the leading space from the marker on the final line.
+	if !isIndented {
+		return strings.TrimRight(string(heredoc[idx+1:len(heredoc)-idx+1]), " \t")
+	}
+
+	unindentedLines := make([]string, len(lines))
+	for k, v := range lines {
+		if k == len(lines)-1 {
+			unindentedLines[k] = ""
+			break
+		}
+
+		unindentedLines[k] = strings.TrimPrefix(v, whitespacePrefix)
+	}
+
+	return strings.Join(unindentedLines, "\n")
+}
diff --git a/vendor/github.com/hashicorp/hcl/json/parser/flatten.go b/vendor/github.com/hashicorp/hcl/json/parser/flatten.go
new file mode 100644
index 0000000..6eb14a2
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/json/parser/flatten.go
@@ -0,0 +1,111 @@
+package parser
+
+import "github.com/hashicorp/hcl/hcl/ast"
+
+// flattenObjects takes an AST node, walks it, and flattens
+func flattenObjects(node ast.Node) {
+	ast.Walk(node, func(n ast.Node) (ast.Node, bool) {
+		// We only care about lists, because this is what we modify
+		list, ok := n.(*ast.ObjectList)
+		if !ok {
+			return n, true
+		}
+
+		// Rebuild the item list
+		items := make([]*ast.ObjectItem, 0, len(list.Items))
+		frontier := make([]*ast.ObjectItem, len(list.Items))
+		copy(frontier, list.Items)
+		for len(frontier) > 0 {
+			// Pop the current item
+			n := len(frontier)
+			item := frontier[n-1]
+			frontier = frontier[:n-1]
+
+			switch v := item.Val.(type) {
+			case *ast.ObjectType:
+				items, frontier = flattenObjectType(v, item, items, frontier)
+			case *ast.ListType:
+				items, frontier = flattenListType(v, item, items, frontier)
+			default:
+				items = append(items, item)
+			}
+		}
+
+		// Reverse the list since the frontier model runs things backwards
+		for i := len(items)/2 - 1; i >= 0; i-- {
+			opp := len(items) - 1 - i
+			items[i], items[opp] = items[opp], items[i]
+		}
+
+		// Done! Set the original items
+		list.Items = items
+		return n, true
+	})
+}
+
+func flattenListType(
+	ot *ast.ListType,
+	item *ast.ObjectItem,
+	items []*ast.ObjectItem,
+	frontier []*ast.ObjectItem) ([]*ast.ObjectItem, []*ast.ObjectItem) {
+	// All the elements of this object must also be objects!
+	for _, subitem := range ot.List {
+		if _, ok := subitem.(*ast.ObjectType); !ok {
+			items = append(items, item)
+			return items, frontier
+		}
+	}
+
+	// Great! We have a match go through all the items and flatten
+	for _, elem := range ot.List {
+		// Add it to the frontier so that we can recurse
+		frontier = append(frontier, &ast.ObjectItem{
+			Keys:        item.Keys,
+			Assign:      item.Assign,
+			Val:         elem,
+			LeadComment: item.LeadComment,
+			LineComment: item.LineComment,
+		})
+	}
+
+	return items, frontier
+}
+
+func flattenObjectType(
+	ot *ast.ObjectType,
+	item *ast.ObjectItem,
+	items []*ast.ObjectItem,
+	frontier []*ast.ObjectItem) ([]*ast.ObjectItem, []*ast.ObjectItem) {
+	// If the list has no items we do not have to flatten anything
+	if ot.List.Items == nil {
+		items = append(items, item)
+		return items, frontier
+	}
+
+	// All the elements of this object must also be objects!
+	for _, subitem := range ot.List.Items {
+		if _, ok := subitem.Val.(*ast.ObjectType); !ok {
+			items = append(items, item)
+			return items, frontier
+		}
+	}
+
+	// Great! We have a match go through all the items and flatten
+	for _, subitem := range ot.List.Items {
+		// Copy the new key
+		keys := make([]*ast.ObjectKey, len(item.Keys)+len(subitem.Keys))
+		copy(keys, item.Keys)
+		copy(keys[len(item.Keys):], subitem.Keys)
+
+		// Add it to the frontier so that we can recurse
+		frontier = append(frontier, &ast.ObjectItem{
+			Keys:        keys,
+			Assign:      item.Assign,
+			Val:         subitem.Val,
+			LeadComment: item.LeadComment,
+			LineComment: item.LineComment,
+		})
+	}
+
+	return items, frontier
+}
diff --git a/vendor/github.com/hashicorp/hcl/json/parser/parser.go b/vendor/github.com/hashicorp/hcl/json/parser/parser.go
new file mode 100644
index 0000000..65d56c9
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/json/parser/parser.go
@@ -0,0 +1,297 @@
+package parser
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/hashicorp/hcl/hcl/ast"
+	"github.com/hashicorp/hcl/json/scanner"
+	"github.com/hashicorp/hcl/json/token"
+)
+
+type Parser struct {
+	sc *scanner.Scanner
+
+	// Last read token
+	tok       token.Token
+	commaPrev token.Token
+
+	enableTrace bool
+	indent      int
+	n           int // buffer size (max = 1)
+}
+
+func newParser(src []byte) *Parser {
+	return &Parser{
+		sc: scanner.New(src),
+	}
+}
+
+// Parse returns the fully parsed source and returns the abstract syntax tree.
+func Parse(src []byte) (*ast.File, error) {
+	p := newParser(src)
+	return p.Parse()
+}
+
+var errEofToken = errors.New("EOF token found")
+
+// Parse returns the fully parsed source and returns the abstract syntax tree.
+func (p *Parser) Parse() (*ast.File, error) {
+	f := &ast.File{}
+	var err, scerr error
+	p.sc.Error = func(pos token.Pos, msg string) {
+		scerr = fmt.Errorf("%s: %s", pos, msg)
+	}
+
+	// The root must be an object in JSON
+	object, err := p.object()
+	if scerr != nil {
+		return nil, scerr
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	// We make our final node an object list so it is more HCL compatible
+	f.Node = object.List
+
+	// Flatten it, which finds patterns and turns them into more HCL-like
+	// AST trees.
+	flattenObjects(f.Node)
+
+	return f, nil
+}
+
+func (p *Parser) objectList() (*ast.ObjectList, error) {
+	defer un(trace(p, "ParseObjectList"))
+	node := &ast.ObjectList{}
+
+	for {
+		n, err := p.objectItem()
+		if err == errEofToken {
+			break // we are finished
+		}
+
+		// we don't return a nil node, because might want to use already
+		// collected items.
+		if err != nil {
+			return node, err
+		}
+
+		node.Add(n)
+
+		// Check for a followup comma. If it isn't a comma, then we're done
+		if tok := p.scan(); tok.Type != token.COMMA {
+			break
+		}
+	}
+	return node, nil
+}
+
+// objectItem parses a single object item
+func (p *Parser) objectItem() (*ast.ObjectItem, error) {
+	defer un(trace(p, "ParseObjectItem"))
+
+	keys, err := p.objectKey()
+	if err != nil {
+		return nil, err
+	}
+
+	o := &ast.ObjectItem{
+		Keys: keys,
+	}
+
+	switch p.tok.Type {
+	case token.COLON:
+		o.Val, err = p.objectValue()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return o, nil
+}
+
+// objectKey parses an object key and returns a ObjectKey AST
+func (p *Parser) objectKey() ([]*ast.ObjectKey, error) {
+	keyCount := 0
+	keys := make([]*ast.ObjectKey, 0)
+
+	for {
+		tok := p.scan()
+		switch tok.Type {
+		case token.EOF:
+			return nil, errEofToken
+		case token.STRING:
+			keyCount++
+			keys = append(keys, &ast.ObjectKey{
+				Token: p.tok.HCLToken(),
+			})
+		case token.COLON:
+			// Done
+			return keys, nil
+		case token.ILLEGAL:
+			fmt.Println("illegal")
+		default:
+			return nil, fmt.Errorf("expected: STRING got: %s", p.tok.Type)
+		}
+	}
+}
+
+// object parses any type of object, such as number, bool, string, object or
+// list.
+func (p *Parser) objectValue() (ast.Node, error) {
+	defer un(trace(p, "ParseObjectValue"))
+	tok := p.scan()
+
+	switch tok.Type {
+	case token.NUMBER, token.FLOAT, token.BOOL, token.NULL, token.STRING:
+		return p.literalType()
+	case token.LBRACE:
+		return p.objectType()
+	case token.LBRACK:
+		return p.listType()
+	case token.EOF:
+		return nil, errEofToken
+	}
+
+	return nil, fmt.Errorf("Expected object value, got unknown token: %+v", tok)
+}
+
+// object parses any type of object, such as number, bool, string, object or
+// list.
+func (p *Parser) object() (*ast.ObjectType, error) {
+	defer un(trace(p, "ParseType"))
+	tok := p.scan()
+
+	switch tok.Type {
+	case token.LBRACE:
+		return p.objectType()
+	case token.EOF:
+		return nil, errEofToken
+	}
+
+	return nil, fmt.Errorf("Expected object, got unknown token: %+v", tok)
+}
+
+// objectType parses an object type and returns a ObjectType AST
+func (p *Parser) objectType() (*ast.ObjectType, error) {
+	defer un(trace(p, "ParseObjectType"))
+
+	// we assume that the currently scanned token is a LBRACE
+	o := &ast.ObjectType{}
+
+	l, err := p.objectList()
+
+	// if we hit RBRACE, we are good to go (means we parsed all Items), if it's
+	// not a RBRACE, it's an syntax error and we just return it.
+	if err != nil && p.tok.Type != token.RBRACE {
+		return nil, err
+	}
+
+	o.List = l
+	return o, nil
+}
+
+// listType parses a list type and returns a ListType AST
+func (p *Parser) listType() (*ast.ListType, error) {
+	defer un(trace(p, "ParseListType"))
+
+	// we assume that the currently scanned token is a LBRACK
+	l := &ast.ListType{}
+
+	for {
+		tok := p.scan()
+		switch tok.Type {
+		case token.NUMBER, token.FLOAT, token.STRING:
+			node, err := p.literalType()
+			if err != nil {
+				return nil, err
+			}
+
+			l.Add(node)
+		case token.COMMA:
+			continue
+		case token.LBRACE:
+			node, err := p.objectType()
+			if err != nil {
+				return nil, err
+			}
+
+			l.Add(node)
+		case token.BOOL:
+			// TODO(arslan) should we support? not supported by HCL yet
+		case token.LBRACK:
+			// TODO(arslan) should we support nested lists? Even though it's
+			// written in README of HCL, it's not a part of the grammar
+			// (not defined in parse.y)
+		case token.RBRACK:
+			// finished
+			return l, nil
+		default:
+			return nil, fmt.Errorf("unexpected token while parsing list: %s", tok.Type)
+		}
+
+	}
+}
+
+// literalType parses a literal type and returns a LiteralType AST
+func (p *Parser) literalType() (*ast.LiteralType, error) {
+	defer un(trace(p, "ParseLiteral"))
+
+	return &ast.LiteralType{
+		Token: p.tok.HCLToken(),
+	}, nil
+}
+
+// scan returns the next token from the underlying scanner. If a token has
+// been unscanned then read that instead.
+func (p *Parser) scan() token.Token {
+	// If we have a token on the buffer, then return it.
+	if p.n != 0 {
+		p.n = 0
+		return p.tok
+	}
+
+	p.tok = p.sc.Scan()
+	return p.tok
+}
+
+// unscan pushes the previously read token back onto the buffer.
+func (p *Parser) unscan() {
+	p.n = 1
+}
+
+// ----------------------------------------------------------------------------
+// Parsing support
+
+func (p *Parser) printTrace(a ...interface{}) {
+	if !p.enableTrace {
+		return
+	}
+
+	const dots = ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "
+	const n = len(dots)
+	fmt.Printf("%5d:%3d: ", p.tok.Pos.Line, p.tok.Pos.Column)
+
+	i := 2 * p.indent
+	for i > n {
+		fmt.Print(dots)
+		i -= n
+	}
+	// i <= n
+	fmt.Print(dots[0:i])
+	fmt.Println(a...)
+}
+
+func trace(p *Parser, msg string) *Parser {
+	p.printTrace(msg, "(")
+	p.indent++
+	return p
+}
+
+// Usage pattern: defer un(trace(p, "..."))
+func un(p *Parser) {
+	p.indent--
+	p.printTrace(")")
+}
diff --git a/vendor/github.com/hashicorp/hcl/json/scanner/scanner.go b/vendor/github.com/hashicorp/hcl/json/scanner/scanner.go
new file mode 100644
index 0000000..477f71f
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/json/scanner/scanner.go
@@ -0,0 +1,451 @@
+package scanner
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/hashicorp/hcl/json/token"
+)
+
+// eof represents a marker rune for the end of the reader.
+const eof = rune(0)
+
+// Scanner defines a lexical scanner
+type Scanner struct {
+	buf *bytes.Buffer // Source buffer for advancing and scanning
+	src []byte        // Source buffer for immutable access
+
+	// Source Position
+	srcPos  token.Pos // current position
+	prevPos token.Pos // previous position, used for peek() method
+
+	lastCharLen int // length of last character in bytes
+	lastLineLen int // length of last line in characters (for correct column reporting)
+
+	tokStart int // token text start position
+	tokEnd   int // token text end  position
+
+	// Error is called for each error encountered. If no Error
+	// function is set, the error is reported to os.Stderr.
+	Error func(pos token.Pos, msg string)
+
+	// ErrorCount is incremented by one for each error encountered.
+	ErrorCount int
+
+	// tokPos is the start position of most recently scanned token; set by
+	// Scan. The Filename field is always left untouched by the Scanner.  If
+	// an error is reported (via Error) and Position is invalid, the scanner is
+	// not inside a token.
+	tokPos token.Pos
+}
+
+// New creates and initializes a new instance of Scanner using src as
+// its source content.
+func New(src []byte) *Scanner {
+	// even though we accept a src, we read from a io.Reader compatible type
+	// (*bytes.Buffer). So in the future we might easily change it to streaming
+	// read.
+	b := bytes.NewBuffer(src)
+	s := &Scanner{
+		buf: b,
+		src: src,
+	}
+
+	// srcPosition always starts with 1
+	s.srcPos.Line = 1
+	return s
+}
+
+// next reads the next rune from the bufferred reader. Returns the rune(0) if
+// an error occurs (or io.EOF is returned).
+func (s *Scanner) next() rune {
+	ch, size, err := s.buf.ReadRune()
+	if err != nil {
+		// advance for error reporting
+		s.srcPos.Column++
+		s.srcPos.Offset += size
+		s.lastCharLen = size
+		return eof
+	}
+
+	if ch == utf8.RuneError && size == 1 {
+		s.srcPos.Column++
+		s.srcPos.Offset += size
+		s.lastCharLen = size
+		s.err("illegal UTF-8 encoding")
+		return ch
+	}
+
+	// remember last position
+	s.prevPos = s.srcPos
+
+	s.srcPos.Column++
+	s.lastCharLen = size
+	s.srcPos.Offset += size
+
+	if ch == '\n' {
+		s.srcPos.Line++
+		s.lastLineLen = s.srcPos.Column
+		s.srcPos.Column = 0
+	}
+
+	// debug
+	// fmt.Printf("ch: %q, offset:column: %d:%d\n", ch, s.srcPos.Offset, s.srcPos.Column)
+	return ch
+}
+
+// unread unreads the previous read Rune and updates the source position
+func (s *Scanner) unread() {
+	if err := s.buf.UnreadRune(); err != nil {
+		panic(err) // this is user fault, we should catch it
+	}
+	s.srcPos = s.prevPos // put back last position
+}
+
+// peek returns the next rune without advancing the reader.
+func (s *Scanner) peek() rune {
+	peek, _, err := s.buf.ReadRune()
+	if err != nil {
+		return eof
+	}
+
+	s.buf.UnreadRune()
+	return peek
+}
+
+// Scan scans the next token and returns the token.
+func (s *Scanner) Scan() token.Token {
+	ch := s.next()
+
+	// skip white space
+	for isWhitespace(ch) {
+		ch = s.next()
+	}
+
+	var tok token.Type
+
+	// token text markings
+	s.tokStart = s.srcPos.Offset - s.lastCharLen
+
+	// token position, initial next() is moving the offset by one(size of rune
+	// actually), though we are interested with the starting point
+	s.tokPos.Offset = s.srcPos.Offset - s.lastCharLen
+	if s.srcPos.Column > 0 {
+		// common case: last character was not a '\n'
+		s.tokPos.Line = s.srcPos.Line
+		s.tokPos.Column = s.srcPos.Column
+	} else {
+		// last character was a '\n'
+		// (we cannot be at the beginning of the source
+		// since we have called next() at least once)
+		s.tokPos.Line = s.srcPos.Line - 1
+		s.tokPos.Column = s.lastLineLen
+	}
+
+	switch {
+	case isLetter(ch):
+		lit := s.scanIdentifier()
+		if lit == "true" || lit == "false" {
+			tok = token.BOOL
+		} else if lit == "null" {
+			tok = token.NULL
+		} else {
+			s.err("illegal char")
+		}
+	case isDecimal(ch):
+		tok = s.scanNumber(ch)
+	default:
+		switch ch {
+		case eof:
+			tok = token.EOF
+		case '"':
+			tok = token.STRING
+			s.scanString()
+		case '.':
+			tok = token.PERIOD
+			ch = s.peek()
+			if isDecimal(ch) {
+				tok = token.FLOAT
+				ch = s.scanMantissa(ch)
+				ch = s.scanExponent(ch)
+			}
+		case '[':
+			tok = token.LBRACK
+		case ']':
+			tok = token.RBRACK
+		case '{':
+			tok = token.LBRACE
+		case '}':
+			tok = token.RBRACE
+		case ',':
+			tok = token.COMMA
+		case ':':
+			tok = token.COLON
+		case '-':
+			if isDecimal(s.peek()) {
+				ch := s.next()
+				tok = s.scanNumber(ch)
+			} else {
+				s.err("illegal char")
+			}
+		default:
+			s.err("illegal char: " + string(ch))
+		}
+	}
+
+	// finish token ending
+	s.tokEnd = s.srcPos.Offset
+
+	// create token literal
+	var tokenText string
+	if s.tokStart >= 0 {
+		tokenText = string(s.src[s.tokStart:s.tokEnd])
+	}
+	s.tokStart = s.tokEnd // ensure idempotency of tokenText() call
+
+	return token.Token{
+		Type: tok,
+		Pos:  s.tokPos,
+		Text: tokenText,
+	}
+}
+
+// scanNumber scans a HCL number definition starting with the given rune
+func (s *Scanner) scanNumber(ch rune) token.Type {
+	zero := ch == '0'
+	pos := s.srcPos
+
+	s.scanMantissa(ch)
+	ch = s.next() // seek forward
+	if ch == 'e' || ch == 'E' {
+		ch = s.scanExponent(ch)
+		return token.FLOAT
+	}
+
+	if ch == '.' {
+		ch = s.scanFraction(ch)
+		if ch == 'e' || ch == 'E' {
+			ch = s.next()
+			ch = s.scanExponent(ch)
+		}
+		return token.FLOAT
+	}
+
+	if ch != eof {
+		s.unread()
+	}
+
+	// If we have a larger number and this is zero, error
+	if zero && pos != s.srcPos {
+		s.err("numbers cannot start with 0")
+	}
+
+	return token.NUMBER
+}
+
+// scanMantissa scans the mantissa begining from the rune. It returns the next
+// non decimal rune. It's used to determine wheter it's a fraction or exponent.
+func (s *Scanner) scanMantissa(ch rune) rune {
+	scanned := false
+	for isDecimal(ch) {
+		ch = s.next()
+		scanned = true
+	}
+
+	if scanned && ch != eof {
+		s.unread()
+	}
+	return ch
+}
+
+// scanFraction scans the fraction after the '.' rune
+func (s *Scanner) scanFraction(ch rune) rune {
+	if ch == '.' {
+		ch = s.peek() // we peek just to see if we can move forward
+		ch = s.scanMantissa(ch)
+	}
+	return ch
+}
+
+// scanExponent scans the remaining parts of an exponent after the 'e' or 'E'
+// rune.
+func (s *Scanner) scanExponent(ch rune) rune {
+	if ch == 'e' || ch == 'E' {
+		ch = s.next()
+		if ch == '-' || ch == '+' {
+			ch = s.next()
+		}
+		ch = s.scanMantissa(ch)
+	}
+	return ch
+}
+
+// scanString scans a quoted string
+func (s *Scanner) scanString() {
+	braces := 0
+	for {
+		// '"' opening already consumed
+		// read character after quote
+		ch := s.next()
+
+		if ch == '\n' || ch < 0 || ch == eof {
+			s.err("literal not terminated")
+			return
+		}
+
+		if ch == '"' && braces == 0 {
+			break
+		}
+
+		// If we're going into a ${} then we can ignore quotes for awhile
+		if braces == 0 && ch == '$' && s.peek() == '{' {
+			braces++
+			s.next()
+		} else if braces > 0 && ch == '{' {
+			braces++
+		}
+		if braces > 0 && ch == '}' {
+			braces--
+		}
+
+		if ch == '\\' {
+			s.scanEscape()
+		}
+	}
+
+	return
+}
+
+// scanEscape scans an escape sequence
+func (s *Scanner) scanEscape() rune {
+	// http://en.cppreference.com/w/cpp/language/escape
+	ch := s.next() // read character after '/'
+	switch ch {
+	case 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', '"':
+		// nothing to do
+	case '0', '1', '2', '3', '4', '5', '6', '7':
+		// octal notation
+		ch = s.scanDigits(ch, 8, 3)
+	case 'x':
+		// hexademical notation
+		ch = s.scanDigits(s.next(), 16, 2)
+	case 'u':
+		// universal character name
+		ch = s.scanDigits(s.next(), 16, 4)
+	case 'U':
+		// universal character name
+		ch = s.scanDigits(s.next(), 16, 8)
+	default:
+		s.err("illegal char escape")
+	}
+	return ch
+}
+
+// scanDigits scans a rune with the given base for n times. For example an
+// octal notation \184 would yield in scanDigits(ch, 8, 3)
+func (s *Scanner) scanDigits(ch rune, base, n int) rune {
+	for n > 0 && digitVal(ch) < base {
+		ch = s.next()
+		n--
+	}
+	if n > 0 {
+		s.err("illegal char escape")
+	}
+
+	// we scanned all digits, put the last non digit char back
+	s.unread()
+	return ch
+}
+
+// scanIdentifier scans an identifier and returns the literal string
+func (s *Scanner) scanIdentifier() string {
+	offs := s.srcPos.Offset - s.lastCharLen
+	ch := s.next()
+	for isLetter(ch) || isDigit(ch) || ch == '-' {
+		ch = s.next()
+	}
+
+	if ch != eof {
+		s.unread() // we got identifier, put back latest char
+	}
+
+	return string(s.src[offs:s.srcPos.Offset])
+}
+
+// recentPosition returns the position of the character immediately after the
+// character or token returned by the last call to Scan.
+func (s *Scanner) recentPosition() (pos token.Pos) {
+	pos.Offset = s.srcPos.Offset - s.lastCharLen
+	switch {
+	case s.srcPos.Column > 0:
+		// common case: last character was not a '\n'
+		pos.Line = s.srcPos.Line
+		pos.Column = s.srcPos.Column
+	case s.lastLineLen > 0:
+		// last character was a '\n'
+		// (we cannot be at the beginning of the source
+		// since we have called next() at least once)
+		pos.Line = s.srcPos.Line - 1
+		pos.Column = s.lastLineLen
+	default:
+		// at the beginning of the source
+		pos.Line = 1
+		pos.Column = 1
+	}
+	return
+}
+
+// err prints the error of any scanning to s.Error function. If the function is
+// not defined, by default it prints them to os.Stderr
+func (s *Scanner) err(msg string) {
+	s.ErrorCount++
+	pos := s.recentPosition()
+
+	if s.Error != nil {
+		s.Error(pos, msg)
+		return
+	}
+
+	fmt.Fprintf(os.Stderr, "%s: %s\n", pos, msg)
+}
+
+// isHexadecimal returns true if the given rune is a letter
+func isLetter(ch rune) bool {
+	return 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' || ch == '_' || ch >= 0x80 && unicode.IsLetter(ch)
+}
+
+// isHexadecimal returns true if the given rune is a decimal digit
+func isDigit(ch rune) bool {
+	return '0' <= ch && ch <= '9' || ch >= 0x80 && unicode.IsDigit(ch)
+}
+
+// isHexadecimal returns true if the given rune is a decimal number
+func isDecimal(ch rune) bool {
+	return '0' <= ch && ch <= '9'
+}
+
+// isHexadecimal returns true if the given rune is an hexadecimal number
+func isHexadecimal(ch rune) bool {
+	return '0' <= ch && ch <= '9' || 'a' <= ch && ch <= 'f' || 'A' <= ch && ch <= 'F'
+}
+
+// isWhitespace returns true if the rune is a space, tab, newline or carriage return
+func isWhitespace(ch rune) bool {
+	return ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'
+}
+
+// digitVal returns the integer value of a given octal,decimal or hexadecimal rune
+func digitVal(ch rune) int {
+	switch {
+	case '0' <= ch && ch <= '9':
+		return int(ch - '0')
+	case 'a' <= ch && ch <= 'f':
+		return int(ch - 'a' + 10)
+	case 'A' <= ch && ch <= 'F':
+		return int(ch - 'A' + 10)
+	}
+	return 16 // larger than any legal digit val
+}
diff --git a/vendor/github.com/hashicorp/hcl/json/token/position.go b/vendor/github.com/hashicorp/hcl/json/token/position.go
new file mode 100644
index 0000000..59c1bb7
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/json/token/position.go
@@ -0,0 +1,46 @@
+package token
+
+import "fmt"
+
+// Pos describes an arbitrary source position
+// including the file, line, and column location.
+// A Position is valid if the line number is > 0.
+type Pos struct {
+	Filename string // filename, if any
+	Offset   int    // offset, starting at 0
+	Line     int    // line number, starting at 1
+	Column   int    // column number, starting at 1 (character count)
+}
+
+// IsValid returns true if the position is valid.
+func (p *Pos) IsValid() bool { return p.Line > 0 }
+
+// String returns a string in one of several forms:
+//
+//	file:line:column    valid position with file name
+//	line:column         valid position without file name
+//	file                invalid position with file name
+//	-                   invalid position without file name
+func (p Pos) String() string {
+	s := p.Filename
+	if p.IsValid() {
+		if s != "" {
+			s += ":"
+		}
+		s += fmt.Sprintf("%d:%d", p.Line, p.Column)
+	}
+	if s == "" {
+		s = "-"
+	}
+	return s
+}
+
+// Before reports whether the position p is before u.
+func (p Pos) Before(u Pos) bool {
+	return u.Offset > p.Offset || u.Line > p.Line
+}
+
+// After reports whether the position p is after u.
+func (p Pos) After(u Pos) bool {
+	return u.Offset < p.Offset || u.Line < p.Line
+}
diff --git a/vendor/github.com/hashicorp/hcl/json/token/token.go b/vendor/github.com/hashicorp/hcl/json/token/token.go
new file mode 100644
index 0000000..95a0c3e
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/json/token/token.go
@@ -0,0 +1,118 @@
+package token
+
+import (
+	"fmt"
+	"strconv"
+
+	hcltoken "github.com/hashicorp/hcl/hcl/token"
+)
+
+// Token defines a single HCL token which can be obtained via the Scanner
+type Token struct {
+	Type Type
+	Pos  Pos
+	Text string
+}
+
+// Type is the set of lexical tokens of the HCL (HashiCorp Configuration Language)
+type Type int
+
+const (
+	// Special tokens
+	ILLEGAL Type = iota
+	EOF
+
+	identifier_beg
+	literal_beg
+	NUMBER // 12345
+	FLOAT  // 123.45
+	BOOL   // true,false
+	STRING // "abc"
+	NULL   // null
+	literal_end
+	identifier_end
+
+	operator_beg
+	LBRACK // [
+	LBRACE // {
+	COMMA  // ,
+	PERIOD // .
+	COLON  // :
+
+	RBRACK // ]
+	RBRACE // }
+
+	operator_end
+)
+
+var tokens = [...]string{
+	ILLEGAL: "ILLEGAL",
+
+	EOF: "EOF",
+
+	NUMBER: "NUMBER",
+	FLOAT:  "FLOAT",
+	BOOL:   "BOOL",
+	STRING: "STRING",
+	NULL:   "NULL",
+
+	LBRACK: "LBRACK",
+	LBRACE: "LBRACE",
+	COMMA:  "COMMA",
+	PERIOD: "PERIOD",
+	COLON:  "COLON",
+
+	RBRACK: "RBRACK",
+	RBRACE: "RBRACE",
+}
+
+// String returns the string corresponding to the token tok.
+func (t Type) String() string {
+	s := ""
+	if 0 <= t && t < Type(len(tokens)) {
+		s = tokens[t]
+	}
+	if s == "" {
+		s = "token(" + strconv.Itoa(int(t)) + ")"
+	}
+	return s
+}
+
+// IsIdentifier returns true for tokens corresponding to identifiers and basic
+// type literals; it returns false otherwise.
+func (t Type) IsIdentifier() bool { return identifier_beg < t && t < identifier_end }
+
+// IsLiteral returns true for tokens corresponding to basic type literals; it
+// returns false otherwise.
+func (t Type) IsLiteral() bool { return literal_beg < t && t < literal_end }
+
+// IsOperator returns true for tokens corresponding to operators and
+// delimiters; it returns false otherwise.
+func (t Type) IsOperator() bool { return operator_beg < t && t < operator_end }
+
+// String returns the token's literal text. Note that this is only
+// applicable for certain token types, such as token.IDENT,
+// token.STRING, etc..
+func (t Token) String() string {
+	return fmt.Sprintf("%s %s %s", t.Pos.String(), t.Type.String(), t.Text)
+}
+
+// HCLToken converts this token to an HCL token.
+//
+// The token type must be a literal type or this will panic.
+func (t Token) HCLToken() hcltoken.Token {
+	switch t.Type {
+	case BOOL:
+		return hcltoken.Token{Type: hcltoken.BOOL, Text: t.Text}
+	case FLOAT:
+		return hcltoken.Token{Type: hcltoken.FLOAT, Text: t.Text}
+	case NULL:
+		return hcltoken.Token{Type: hcltoken.STRING, Text: ""}
+	case NUMBER:
+		return hcltoken.Token{Type: hcltoken.NUMBER, Text: t.Text}
+	case STRING:
+		return hcltoken.Token{Type: hcltoken.STRING, Text: t.Text, JSON: true}
+	default:
+		panic(fmt.Sprintf("unimplemented HCLToken for type: %s", t.Type))
+	}
+}
diff --git a/vendor/github.com/hashicorp/hcl/lex.go b/vendor/github.com/hashicorp/hcl/lex.go
new file mode 100644
index 0000000..d9993c2
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/lex.go
@@ -0,0 +1,38 @@
+package hcl
+
+import (
+	"unicode"
+	"unicode/utf8"
+)
+
+type lexModeValue byte
+
+const (
+	lexModeUnknown lexModeValue = iota
+	lexModeHcl
+	lexModeJson
+)
+
+// lexMode returns whether we're going to be parsing in JSON
+// mode or HCL mode.
+func lexMode(v []byte) lexModeValue {
+	var (
+		r      rune
+		w      int
+		offset int
+	)
+
+	for {
+		r, w = utf8.DecodeRune(v[offset:])
+		offset += w
+		if unicode.IsSpace(r) {
+			continue
+		}
+		if r == '{' {
+			return lexModeJson
+		}
+		break
+	}
+
+	return lexModeHcl
+}
diff --git a/vendor/github.com/hashicorp/hcl/parse.go b/vendor/github.com/hashicorp/hcl/parse.go
new file mode 100644
index 0000000..1fca53c
--- /dev/null
+++ b/vendor/github.com/hashicorp/hcl/parse.go
@@ -0,0 +1,39 @@
+package hcl
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/hcl/hcl/ast"
+	hclParser "github.com/hashicorp/hcl/hcl/parser"
+	jsonParser "github.com/hashicorp/hcl/json/parser"
+)
+
+// ParseBytes accepts as input byte slice and returns ast tree.
+//
+// Input can be either JSON or HCL
+func ParseBytes(in []byte) (*ast.File, error) {
+	return parse(in)
+}
+
+// ParseString accepts input as a string and returns ast tree.
+func ParseString(input string) (*ast.File, error) {
+	return parse([]byte(input))
+}
+
+func parse(in []byte) (*ast.File, error) {
+	switch lexMode(in) {
+	case lexModeHcl:
+		return hclParser.Parse(in)
+	case lexModeJson:
+		return jsonParser.Parse(in)
+	}
+
+	return nil, fmt.Errorf("unknown config format")
+}
+
+// Parse parses the given input and returns the root object.
+//
+// The input format can be either HCL or JSON.
+func Parse(input string) (*ast.File, error) {
+	return parse([]byte(input))
+}
diff --git a/vendor/github.com/magiconair/properties/CHANGELOG.md b/vendor/github.com/magiconair/properties/CHANGELOG.md
new file mode 100644
index 0000000..bf49a13
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/CHANGELOG.md
@@ -0,0 +1,81 @@
+## Changelog
+
+### [1.7.0](https://github.com/magiconair/properties/tags/v1.7.0) - 20 Mar 2016
+
+ * [Issue #10](https://github.com/magiconair/properties/issues/10): Add [LoadURL,LoadURLs,MustLoadURL,MustLoadURLs](http://godoc.org/github.com/magiconair/properties#Properties.LoadURL) method to load properties from a URL.
+ * [Issue #11](https://github.com/magiconair/properties/issues/11): Add [LoadString,MustLoadString](http://godoc.org/github.com/magiconair/properties#Properties.LoadString) method to load properties from an UTF8 string.
+ * [PR #8](https://github.com/magiconair/properties/pull/8): Add [MustFlag](http://godoc.org/github.com/magiconair/properties#Properties.MustFlag) method to provide overrides via command line flags. (@pascaldekloe)
+
+### [1.6.0](https://github.com/magiconair/properties/tags/v1.6.0) - 11 Dec 2015
+
+ * Add [Decode](http://godoc.org/github.com/magiconair/properties#Properties.Decode) method to populate struct from properties via tags.
+
+### [1.5.6](https://github.com/magiconair/properties/tags/v1.5.6) - 18 Oct 2015
+
+ * Vendored in gopkg.in/check.v1
+
+### [1.5.5](https://github.com/magiconair/properties/tags/v1.5.5) - 31 Jul 2015
+
+ * [PR #6](https://github.com/magiconair/properties/pull/6): Add [Delete](http://godoc.org/github.com/magiconair/properties#Properties.Delete) method to remove keys including comments. (@gerbenjacobs)
+
+### [1.5.4](https://github.com/magiconair/properties/tags/v1.5.4) - 23 Jun 2015
+
+ * [Issue #5](https://github.com/magiconair/properties/issues/5): Allow disabling of property expansion [DisableExpansion](http://godoc.org/github.com/magiconair/properties#Properties.DisableExpansion). When property expansion is disabled Properties become a simple key/value store and don't check for circular references.
+
+### [1.5.3](https://github.com/magiconair/properties/tags/v1.5.3) - 02 Jun 2015
+
+ * [Issue #4](https://github.com/magiconair/properties/issues/4): Maintain key order in [Filter()](http://godoc.org/github.com/magiconair/properties#Properties.Filter), [FilterPrefix()](http://godoc.org/github.com/magiconair/properties#Properties.FilterPrefix) and [FilterRegexp()](http://godoc.org/github.com/magiconair/properties#Properties.FilterRegexp)
+
+### [1.5.2](https://github.com/magiconair/properties/tags/v1.5.2) - 10 Apr 2015
+
+ * [Issue #3](https://github.com/magiconair/properties/issues/3): Don't print comments in [WriteComment()](http://godoc.org/github.com/magiconair/properties#Properties.WriteComment) if they are all empty
+ * Add clickable links to README
+
+### [1.5.1](https://github.com/magiconair/properties/tags/v1.5.1) - 08 Dec 2014
+
+ * Added [GetParsedDuration()](http://godoc.org/github.com/magiconair/properties#Properties.GetParsedDuration) and [MustGetParsedDuration()](http://godoc.org/github.com/magiconair/properties#Properties.MustGetParsedDuration) for values specified compatible with
+   [time.ParseDuration()](http://golang.org/pkg/time/#ParseDuration).
+
+### [1.5.0](https://github.com/magiconair/properties/tags/v1.5.0) - 18 Nov 2014
+
+ * Added support for single and multi-line comments (reading, writing and updating)
+ * The order of keys is now preserved
+ * Calling [Set()](http://godoc.org/github.com/magiconair/properties#Properties.Set) with an empty key now silently ignores the call and does not create a new entry
+ * Added a [MustSet()](http://godoc.org/github.com/magiconair/properties#Properties.MustSet) method
+ * Migrated test library from launchpad.net/gocheck to [gopkg.in/check.v1](http://gopkg.in/check.v1)
+
+### [1.4.2](https://github.com/magiconair/properties/tags/v1.4.2) - 15 Nov 2014
+
+ * [Issue #2](https://github.com/magiconair/properties/issues/2): Fixed goroutine leak in parser which created two lexers but cleaned up only one
+
+### [1.4.1](https://github.com/magiconair/properties/tags/v1.4.1) - 13 Nov 2014
+
+ * [Issue #1](https://github.com/magiconair/properties/issues/1): Fixed bug in Keys() method which returned an empty string
+
+### [1.4.0](https://github.com/magiconair/properties/tags/v1.4.0) - 23 Sep 2014
+
+ * Added [Keys()](http://godoc.org/github.com/magiconair/properties#Properties.Keys) to get the keys
+ * Added [Filter()](http://godoc.org/github.com/magiconair/properties#Properties.Filter), [FilterRegexp()](http://godoc.org/github.com/magiconair/properties#Properties.FilterRegexp) and [FilterPrefix()](http://godoc.org/github.com/magiconair/properties#Properties.FilterPrefix) to get a subset of the properties
+
+### [1.3.0](https://github.com/magiconair/properties/tags/v1.3.0) - 18 Mar 2014
+
+* Added support for time.Duration
+* Made MustXXX() failure beha[ior configurable (log.Fatal, panic](https://github.com/magiconair/properties/tags/vior configurable (log.Fatal, panic) - custom)
+* Changed default of MustXXX() failure from panic to log.Fatal
+
+### [1.2.0](https://github.com/magiconair/properties/tags/v1.2.0) - 05 Mar 2014
+
+* Added MustGet... functions
+* Added support for int and uint with range checks on 32 bit platforms
+
+### [1.1.0](https://github.com/magiconair/properties/tags/v1.1.0) - 20 Jan 2014
+
+* Renamed from goproperties to properties
+* Added support for expansion of environment vars in
+  filenames and value expressions
+* Fixed bug where value expressions were not at the
+  start of the string
+
+### [1.0.0](https://github.com/magiconair/properties/tags/v1.0.0) - 7 Jan 2014
+
+* Initial release
diff --git a/vendor/github.com/magiconair/properties/LICENSE b/vendor/github.com/magiconair/properties/LICENSE
new file mode 100644
index 0000000..7eab43b
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/LICENSE
@@ -0,0 +1,25 @@
+goproperties - properties file decoder for Go
+
+Copyright (c) 2013-2014 - Frank Schroeder
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/magiconair/properties/README.md b/vendor/github.com/magiconair/properties/README.md
new file mode 100644
index 0000000..1ae0035
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/README.md
@@ -0,0 +1,81 @@
+Overview [![Build Status](https://travis-ci.org/magiconair/properties.svg?branch=master)](https://travis-ci.org/magiconair/properties)
+========
+
+#### Current version: 1.7.0
+
+properties is a Go library for reading and writing properties files.
+
+It supports reading from multiple files or URLs and Spring style recursive
+property expansion of expressions like `${key}` to their corresponding value.
+Value expressions can refer to other keys like in `${key}` or to environment
+variables like in `${USER}`.  Filenames can also contain environment variables
+like in `/home/${USER}/myapp.properties`.
+
+Properties can be decoded into structs, maps, arrays and values through
+struct tags.
+
+Comments and the order of keys are preserved. Comments can be modified
+and can be written to the output.
+
+The properties library supports both ISO-8859-1 and UTF-8 encoded data.
+
+Starting from version 1.3.0 the behavior of the MustXXX() functions is
+configurable by providing a custom `ErrorHandler` function. The default has
+changed from `panic` to `log.Fatal` but this is configurable and custom
+error handling functions can be provided. See the package documentation for
+details.
+
+Getting Started
+---------------
+
+```go
+import (
+	"flag"
+	"github.com/magiconair/properties"
+)
+
+func main() {
+	p := properties.MustLoadFile("${HOME}/config.properties", properties.UTF8)
+
+	// via getters
+	host := p.MustGetString("host")
+	port := p.GetInt("port", 8080)
+
+	// or via decode
+	type Config struct {
+		Host    string        `properties:"host"`
+		Port    int           `properties:"port,default=9000"`
+		Accept  []string      `properties:"accept,default=image/png;image;gif"`
+		Timeout time.Duration `properties:"timeout,default=5s"`
+	}
+	var cfg Config
+	if err := p.Decode(&cfg); err != nil {
+		log.Fatal(err)
+	}
+
+	// or via flags
+	p.MustFlag(flag.CommandLine)
+
+	// or via url
+	p = properties.MustLoadURL("http://host/path")
+}
+
+```
+
+Read the full documentation on [GoDoc](https://godoc.org/github.com/magiconair/properties)   [![GoDoc](https://godoc.org/github.com/magiconair/properties?status.png)](https://godoc.org/github.com/magiconair/properties)
+
+Installation and Upgrade
+------------------------
+
+```
+$ go get -u github.com/magiconair/properties
+```
+
+License
+-------
+
+2 clause BSD license. See [LICENSE](https://github.com/magiconair/properties/blob/master/LICENSE) file for details.
+
+ToDo
+----
+* Dump contents with passwords and secrets obscured
diff --git a/vendor/github.com/magiconair/properties/decode.go b/vendor/github.com/magiconair/properties/decode.go
new file mode 100644
index 0000000..b989e63
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/decode.go
@@ -0,0 +1,290 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package properties
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Decode assigns property values to exported fields of a struct.
+//
+// Decode traverses v recursively and returns an error if a value cannot be
+// converted to the field type or a required value is missing for a field.
+//
+// The following type dependent decodings are used:
+//
+// String, boolean, numeric fields have the value of the property key assigned.
+// The property key name is the name of the field. A different key and a default
+// value can be set in the field's tag. Fields without default value are
+// required. If the value cannot be converted to the field type an error is
+// returned.
+//
+// time.Duration fields have the result of time.ParseDuration() assigned.
+//
+// time.Time fields have the vaule of time.Parse() assigned. The default layout
+// is time.RFC3339 but can be set in the field's tag.
+//
+// Arrays and slices of string, boolean, numeric, time.Duration and time.Time
+// fields have the value interpreted as a comma separated list of values. The
+// individual values are trimmed of whitespace and empty values are ignored. A
+// default value can be provided as a semicolon separated list in the field's
+// tag.
+//
+// Struct fields are decoded recursively using the field name plus "." as
+// prefix. The prefix (without dot) can be overridden in the field's tag.
+// Default values are not supported in the field's tag. Specify them on the
+// fields of the inner struct instead.
+//
+// Map fields must have a key of type string and are decoded recursively by
+// using the field's name plus ".' as prefix and the next element of the key
+// name as map key. The prefix (without dot) can be overridden in the field's
+// tag. Default values are not supported.
+//
+// Examples:
+//
+//     // Field is ignored.
+//     Field int `properties:"-"`
+//
+//     // Field is assigned value of 'Field'.
+//     Field int
+//
+//     // Field is assigned value of 'myName'.
+//     Field int `properties:"myName"`
+//
+//     // Field is assigned value of key 'myName' and has a default
+//     // value 15 if the key does not exist.
+//     Field int `properties:"myName,default=15"`
+//
+//     // Field is assigned value of key 'Field' and has a default
+//     // value 15 if the key does not exist.
+//     Field int `properties:",default=15"`
+//
+//     // Field is assigned value of key 'date' and the date
+//     // is in format 2006-01-02
+//     Field time.Time `properties:"date,layout=2006-01-02"`
+//
+//     // Field is assigned the non-empty and whitespace trimmed
+//     // values of key 'Field' split by commas.
+//     Field []string
+//
+//     // Field is assigned the non-empty and whitespace trimmed
+//     // values of key 'Field' split by commas and has a default
+//     // value ["a", "b", "c"] if the key does not exist.
+//     Field []string `properties:",default=a;b;c"`
+//
+//     // Field is decoded recursively with "Field." as key prefix.
+//     Field SomeStruct
+//
+//     // Field is decoded recursively with "myName." as key prefix.
+//     Field SomeStruct `properties:"myName"`
+//
+//     // Field is decoded recursively with "Field." as key prefix
+//     // and the next dotted element of the key as map key.
+//     Field map[string]string
+//
+//     // Field is decoded recursively with "myName." as key prefix
+//     // and the next dotted element of the key as map key.
+//     Field map[string]string `properties:"myName"`
+func (p *Properties) Decode(x interface{}) error {
+	t, v := reflect.TypeOf(x), reflect.ValueOf(x)
+	if t.Kind() != reflect.Ptr || v.Elem().Type().Kind() != reflect.Struct {
+		return fmt.Errorf("not a pointer to struct: %s", t)
+	}
+	if err := dec(p, "", nil, nil, v); err != nil {
+		return err
+	}
+	return nil
+}
+
+func dec(p *Properties, key string, def *string, opts map[string]string, v reflect.Value) error {
+	t := v.Type()
+
+	// value returns the property value for key or the default if provided.
+	value := func() (string, error) {
+		if val, ok := p.Get(key); ok {
+			return val, nil
+		}
+		if def != nil {
+			return *def, nil
+		}
+		return "", fmt.Errorf("missing required key %s", key)
+	}
+
+	// conv converts a string to a value of the given type.
+	conv := func(s string, t reflect.Type) (val reflect.Value, err error) {
+		var v interface{}
+
+		switch {
+		case isDuration(t):
+			v, err = time.ParseDuration(s)
+
+		case isTime(t):
+			layout := opts["layout"]
+			if layout == "" {
+				layout = time.RFC3339
+			}
+			v, err = time.Parse(layout, s)
+
+		case isBool(t):
+			v, err = boolVal(s), nil
+
+		case isString(t):
+			v, err = s, nil
+
+		case isFloat(t):
+			v, err = strconv.ParseFloat(s, 64)
+
+		case isInt(t):
+			v, err = strconv.ParseInt(s, 10, 64)
+
+		case isUint(t):
+			v, err = strconv.ParseUint(s, 10, 64)
+
+		default:
+			return reflect.Zero(t), fmt.Errorf("unsupported type %s", t)
+		}
+		if err != nil {
+			return reflect.Zero(t), err
+		}
+		return reflect.ValueOf(v).Convert(t), nil
+	}
+
+	// keydef returns the property key and the default value based on the
+	// name of the struct field and the options in the tag.
+	keydef := func(f reflect.StructField) (string, *string, map[string]string) {
+		key, opts := parseTag(f.Tag.Get("properties"))
+
+		var def *string
+		if d, ok := opts["default"]; ok {
+			def = &d
+		}
+		if key != "" {
+			return key, def, opts
+		}
+		return f.Name, def, opts
+	}
+
+	switch {
+	case isDuration(t) || isTime(t) || isBool(t) || isString(t) || isFloat(t) || isInt(t) || isUint(t):
+		s, err := value()
+		if err != nil {
+			return err
+		}
+		val, err := conv(s, t)
+		if err != nil {
+			return err
+		}
+		v.Set(val)
+
+	case isPtr(t):
+		return dec(p, key, def, opts, v.Elem())
+
+	case isStruct(t):
+		for i := 0; i < v.NumField(); i++ {
+			fv := v.Field(i)
+			fk, def, opts := keydef(t.Field(i))
+			if !fv.CanSet() {
+				return fmt.Errorf("cannot set ", t.Field(i).Name)
+			}
+			if fk == "-" {
+				continue
+			}
+			if key != "" {
+				fk = key + "." + fk
+			}
+			if err := dec(p, fk, def, opts, fv); err != nil {
+				return err
+			}
+		}
+		return nil
+
+	case isArray(t):
+		val, err := value()
+		if err != nil {
+			return err
+		}
+		vals := split(val, ";")
+		a := reflect.MakeSlice(t, 0, len(vals))
+		for _, s := range vals {
+			val, err := conv(s, t.Elem())
+			if err != nil {
+				return err
+			}
+			a = reflect.Append(a, val)
+		}
+		v.Set(a)
+
+	case isMap(t):
+		valT := t.Elem()
+		m := reflect.MakeMap(t)
+		for postfix, _ := range p.FilterStripPrefix(key + ".").m {
+			pp := strings.SplitN(postfix, ".", 2)
+			mk, mv := pp[0], reflect.New(valT)
+			if err := dec(p, key+"."+mk, nil, nil, mv); err != nil {
+				return err
+			}
+			m.SetMapIndex(reflect.ValueOf(mk), mv.Elem())
+		}
+		v.Set(m)
+
+	default:
+		return fmt.Errorf("unsupported type %s", t)
+	}
+	return nil
+}
+
+// split splits a string on sep, trims whitespace of elements
+// and omits empty elements
+func split(s string, sep string) []string {
+	var a []string
+	for _, v := range strings.Split(s, sep) {
+		if v = strings.TrimSpace(v); v != "" {
+			a = append(a, v)
+		}
+	}
+	return a
+}
+
+// parseTag parses a "key,k=v,k=v,..."
+func parseTag(tag string) (key string, opts map[string]string) {
+	opts = map[string]string{}
+	for i, s := range strings.Split(tag, ",") {
+		if i == 0 {
+			key = s
+			continue
+		}
+
+		pp := strings.SplitN(s, "=", 2)
+		if len(pp) == 1 {
+			opts[pp[0]] = ""
+		} else {
+			opts[pp[0]] = pp[1]
+		}
+	}
+	return key, opts
+}
+
+func isArray(t reflect.Type) bool    { return t.Kind() == reflect.Array || t.Kind() == reflect.Slice }
+func isBool(t reflect.Type) bool     { return t.Kind() == reflect.Bool }
+func isDuration(t reflect.Type) bool { return t == reflect.TypeOf(time.Second) }
+func isMap(t reflect.Type) bool      { return t.Kind() == reflect.Map }
+func isNumeric(t reflect.Type) bool  { return isInt(t) || isUint(t) || isFloat(t) }
+func isPtr(t reflect.Type) bool      { return t.Kind() == reflect.Ptr }
+func isString(t reflect.Type) bool   { return t.Kind() == reflect.String }
+func isStruct(t reflect.Type) bool   { return t.Kind() == reflect.Struct }
+func isTime(t reflect.Type) bool     { return t == reflect.TypeOf(time.Time{}) }
+func isFloat(t reflect.Type) bool {
+	return t.Kind() == reflect.Float32 || t.Kind() == reflect.Float64
+}
+func isInt(t reflect.Type) bool {
+	return t.Kind() == reflect.Int || t.Kind() == reflect.Int8 || t.Kind() == reflect.Int16 || t.Kind() == reflect.Int32 || t.Kind() == reflect.Int64
+}
+func isUint(t reflect.Type) bool {
+	return t.Kind() == reflect.Uint || t.Kind() == reflect.Uint8 || t.Kind() == reflect.Uint16 || t.Kind() == reflect.Uint32 || t.Kind() == reflect.Uint64
+}
diff --git a/vendor/github.com/magiconair/properties/doc.go b/vendor/github.com/magiconair/properties/doc.go
new file mode 100644
index 0000000..ed1ff51
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/doc.go
@@ -0,0 +1,156 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package properties provides functions for reading and writing
+// ISO-8859-1 and UTF-8 encoded .properties files and has
+// support for recursive property expansion.
+//
+// Java properties files are ISO-8859-1 encoded and use Unicode
+// literals for characters outside the ISO character set. Unicode
+// literals can be used in UTF-8 encoded properties files but
+// aren't necessary.
+//
+// To load a single properties file use MustLoadFile():
+//
+//   p := properties.MustLoadFile(filename, properties.UTF8)
+//
+// To load multiple properties files use MustLoadFiles()
+// which loads the files in the given order and merges the
+// result. Missing properties files can be ignored if the
+// 'ignoreMissing' flag is set to true.
+//
+// Filenames can contain environment variables which are expanded
+// before loading.
+//
+//   f1 := "/etc/myapp/myapp.conf"
+//   f2 := "/home/${USER}/myapp.conf"
+//   p := MustLoadFiles([]string{f1, f2}, properties.UTF8, true)
+//
+// All of the different key/value delimiters ' ', ':' and '=' are
+// supported as well as the comment characters '!' and '#' and
+// multi-line values.
+//
+//   ! this is a comment
+//   # and so is this
+//
+//   # the following expressions are equal
+//   key value
+//   key=value
+//   key:value
+//   key = value
+//   key : value
+//   key = val\
+//         ue
+//
+// Properties stores all comments preceding a key and provides
+// GetComments() and SetComments() methods to retrieve and
+// update them. The convenience functions GetComment() and
+// SetComment() allow access to the last comment. The
+// WriteComment() method writes properties files including
+// the comments and with the keys in the original order.
+// This can be used for sanitizing properties files.
+//
+// Property expansion is recursive and circular references
+// and malformed expressions are not allowed and cause an
+// error. Expansion of environment variables is supported.
+//
+//   # standard property
+//   key = value
+//
+//   # property expansion: key2 = value
+//   key2 = ${key}
+//
+//   # recursive expansion: key3 = value
+//   key3 = ${key2}
+//
+//   # circular reference (error)
+//   key = ${key}
+//
+//   # malformed expression (error)
+//   key = ${ke
+//
+//   # refers to the users' home dir
+//   home = ${HOME}
+//
+//   # local key takes precendence over env var: u = foo
+//   USER = foo
+//   u = ${USER}
+//
+// The default property expansion format is ${key} but can be
+// changed by setting different pre- and postfix values on the
+// Properties object.
+//
+//   p := properties.NewProperties()
+//   p.Prefix = "#["
+//   p.Postfix = "]#"
+//
+// Properties provides convenience functions for getting typed
+// values with default values if the key does not exist or the
+// type conversion failed.
+//
+//   # Returns true if the value is either "1", "on", "yes" or "true"
+//   # Returns false for every other value and the default value if
+//   # the key does not exist.
+//   v = p.GetBool("key", false)
+//
+//   # Returns the value if the key exists and the format conversion
+//   # was successful. Otherwise, the default value is returned.
+//   v = p.GetInt64("key", 999)
+//   v = p.GetUint64("key", 999)
+//   v = p.GetFloat64("key", 123.0)
+//   v = p.GetString("key", "def")
+//   v = p.GetDuration("key", 999)
+//
+// As an alterantive properties may be applied with the standard
+// library's flag implementation at any time.
+//
+//   # Standard configuration
+//   v = flag.Int("key", 999, "help message")
+//   flag.Parse()
+//
+//   # Merge p into the flag set
+//   p.MustFlag(flag.CommandLine)
+//
+// Properties provides several MustXXX() convenience functions
+// which will terminate the app if an error occurs. The behavior
+// of the failure is configurable and the default is to call
+// log.Fatal(err). To have the MustXXX() functions panic instead
+// of logging the error set a different ErrorHandler before
+// you use the Properties package.
+//
+//   properties.ErrorHandler = properties.PanicHandler
+//
+//   # Will panic instead of logging an error
+//   p := properties.MustLoadFile("config.properties")
+//
+// You can also provide your own ErrorHandler function. The only requirement
+// is that the error handler function must exit after handling the error.
+//
+//   properties.ErrorHandler = func(err error) {
+//	     fmt.Println(err)
+//       os.Exit(1)
+//   }
+//
+//   # Will write to stdout and then exit
+//   p := properties.MustLoadFile("config.properties")
+//
+// Properties can also be loaded into a struct via the `Decode`
+// method, e.g.
+//
+//   type S struct {
+//       A string        `properties:"a,default=foo"`
+//       D time.Duration `properties:"timeout,default=5s"`
+//       E time.Time     `properties:"expires,layout=2006-01-02,default=2015-01-01"`
+//   }
+//
+// See `Decode()` method for the full documentation.
+//
+// The following documents provide a description of the properties
+// file format.
+//
+// http://en.wikipedia.org/wiki/.properties
+//
+// http://docs.oracle.com/javase/7/docs/api/java/util/Properties.html#load%28java.io.Reader%29
+//
+package properties
diff --git a/vendor/github.com/magiconair/properties/integrate.go b/vendor/github.com/magiconair/properties/integrate.go
new file mode 100644
index 0000000..37baaad
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/integrate.go
@@ -0,0 +1,34 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package properties
+
+import "flag"
+
+// MustFlag sets flags that are skipped by dst.Parse when p contains
+// the respective key for flag.Flag.Name.
+//
+// It's use is recommended with command line arguments as in:
+// 	flag.Parse()
+// 	p.MustFlag(flag.CommandLine)
+func (p *Properties) MustFlag(dst *flag.FlagSet) {
+	m := make(map[string]*flag.Flag)
+	dst.VisitAll(func(f *flag.Flag) {
+		m[f.Name] = f
+	})
+	dst.Visit(func(f *flag.Flag) {
+		delete(m, f.Name) // overridden
+	})
+
+	for name, f := range m {
+		v, ok := p.Get(name)
+		if !ok {
+			continue
+		}
+
+		if err := f.Value.Set(v); err != nil {
+			ErrorHandler(err)
+		}
+	}
+}
diff --git a/vendor/github.com/magiconair/properties/lex.go b/vendor/github.com/magiconair/properties/lex.go
new file mode 100644
index 0000000..014e63f
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/lex.go
@@ -0,0 +1,409 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// Parts of the lexer are from the template/text/parser package
+// For these parts the following applies:
+//
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file of the go 1.2
+// distribution.
+
+package properties
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+)
+
+// item represents a token or text string returned from the scanner.
+type item struct {
+	typ itemType // The type of this item.
+	pos int      // The starting position, in bytes, of this item in the input string.
+	val string   // The value of this item.
+}
+
+func (i item) String() string {
+	switch {
+	case i.typ == itemEOF:
+		return "EOF"
+	case i.typ == itemError:
+		return i.val
+	case len(i.val) > 10:
+		return fmt.Sprintf("%.10q...", i.val)
+	}
+	return fmt.Sprintf("%q", i.val)
+}
+
+// itemType identifies the type of lex items.
+type itemType int
+
+const (
+	itemError itemType = iota // error occurred; value is text of error
+	itemEOF
+	itemKey     // a key
+	itemValue   // a value
+	itemComment // a comment
+)
+
+// defines a constant for EOF
+const eof = -1
+
+// permitted whitespace characters space, FF and TAB
+const whitespace = " \f\t"
+
+// stateFn represents the state of the scanner as a function that returns the next state.
+type stateFn func(*lexer) stateFn
+
+// lexer holds the state of the scanner.
+type lexer struct {
+	input   string    // the string being scanned
+	state   stateFn   // the next lexing function to enter
+	pos     int       // current position in the input
+	start   int       // start position of this item
+	width   int       // width of last rune read from input
+	lastPos int       // position of most recent item returned by nextItem
+	runes   []rune    // scanned runes for this item
+	items   chan item // channel of scanned items
+}
+
+// next returns the next rune in the input.
+func (l *lexer) next() rune {
+	if int(l.pos) >= len(l.input) {
+		l.width = 0
+		return eof
+	}
+	r, w := utf8.DecodeRuneInString(l.input[l.pos:])
+	l.width = w
+	l.pos += l.width
+	return r
+}
+
+// peek returns but does not consume the next rune in the input.
+func (l *lexer) peek() rune {
+	r := l.next()
+	l.backup()
+	return r
+}
+
+// backup steps back one rune. Can only be called once per call of next.
+func (l *lexer) backup() {
+	l.pos -= l.width
+}
+
+// emit passes an item back to the client.
+func (l *lexer) emit(t itemType) {
+	item := item{t, l.start, string(l.runes)}
+	l.items <- item
+	l.start = l.pos
+	l.runes = l.runes[:0]
+}
+
+// ignore skips over the pending input before this point.
+func (l *lexer) ignore() {
+	l.start = l.pos
+}
+
+// appends the rune to the current value
+func (l *lexer) appendRune(r rune) {
+	l.runes = append(l.runes, r)
+}
+
+// accept consumes the next rune if it's from the valid set.
+func (l *lexer) accept(valid string) bool {
+	if strings.IndexRune(valid, l.next()) >= 0 {
+		return true
+	}
+	l.backup()
+	return false
+}
+
+// acceptRun consumes a run of runes from the valid set.
+func (l *lexer) acceptRun(valid string) {
+	for strings.IndexRune(valid, l.next()) >= 0 {
+	}
+	l.backup()
+}
+
+// acceptRunUntil consumes a run of runes up to a terminator.
+func (l *lexer) acceptRunUntil(term rune) {
+	for term != l.next() {
+	}
+	l.backup()
+}
+
+// hasText returns true if the current parsed text is not empty.
+func (l *lexer) isNotEmpty() bool {
+	return l.pos > l.start
+}
+
+// lineNumber reports which line we're on, based on the position of
+// the previous item returned by nextItem. Doing it this way
+// means we don't have to worry about peek double counting.
+func (l *lexer) lineNumber() int {
+	return 1 + strings.Count(l.input[:l.lastPos], "\n")
+}
+
+// errorf returns an error token and terminates the scan by passing
+// back a nil pointer that will be the next state, terminating l.nextItem.
+func (l *lexer) errorf(format string, args ...interface{}) stateFn {
+	l.items <- item{itemError, l.start, fmt.Sprintf(format, args...)}
+	return nil
+}
+
+// nextItem returns the next item from the input.
+func (l *lexer) nextItem() item {
+	item := <-l.items
+	l.lastPos = item.pos
+	return item
+}
+
+// lex creates a new scanner for the input string.
+func lex(input string) *lexer {
+	l := &lexer{
+		input: input,
+		items: make(chan item),
+		runes: make([]rune, 0, 32),
+	}
+	go l.run()
+	return l
+}
+
+// run runs the state machine for the lexer.
+func (l *lexer) run() {
+	for l.state = lexBeforeKey(l); l.state != nil; {
+		l.state = l.state(l)
+	}
+}
+
+// state functions
+
+// lexBeforeKey scans until a key begins.
+func lexBeforeKey(l *lexer) stateFn {
+	switch r := l.next(); {
+	case isEOF(r):
+		l.emit(itemEOF)
+		return nil
+
+	case isEOL(r):
+		l.ignore()
+		return lexBeforeKey
+
+	case isComment(r):
+		return lexComment
+
+	case isWhitespace(r):
+		l.acceptRun(whitespace)
+		l.ignore()
+		return lexKey
+
+	default:
+		l.backup()
+		return lexKey
+	}
+}
+
+// lexComment scans a comment line. The comment character has already been scanned.
+func lexComment(l *lexer) stateFn {
+	l.acceptRun(whitespace)
+	l.ignore()
+	for {
+		switch r := l.next(); {
+		case isEOF(r):
+			l.ignore()
+			l.emit(itemEOF)
+			return nil
+		case isEOL(r):
+			l.emit(itemComment)
+			return lexBeforeKey
+		default:
+			l.appendRune(r)
+		}
+	}
+}
+
+// lexKey scans the key up to a delimiter
+func lexKey(l *lexer) stateFn {
+	var r rune
+
+Loop:
+	for {
+		switch r = l.next(); {
+
+		case isEscape(r):
+			err := l.scanEscapeSequence()
+			if err != nil {
+				return l.errorf(err.Error())
+			}
+
+		case isEndOfKey(r):
+			l.backup()
+			break Loop
+
+		case isEOF(r):
+			break Loop
+
+		default:
+			l.appendRune(r)
+		}
+	}
+
+	if len(l.runes) > 0 {
+		l.emit(itemKey)
+	}
+
+	if isEOF(r) {
+		l.emit(itemEOF)
+		return nil
+	}
+
+	return lexBeforeValue
+}
+
+// lexBeforeValue scans the delimiter between key and value.
+// Leading and trailing whitespace is ignored.
+// We expect to be just after the key.
+func lexBeforeValue(l *lexer) stateFn {
+	l.acceptRun(whitespace)
+	l.accept(":=")
+	l.acceptRun(whitespace)
+	l.ignore()
+	return lexValue
+}
+
+// lexValue scans text until the end of the line. We expect to be just after the delimiter.
+func lexValue(l *lexer) stateFn {
+	for {
+		switch r := l.next(); {
+		case isEscape(r):
+			r := l.peek()
+			if isEOL(r) {
+				l.next()
+				l.acceptRun(whitespace)
+			} else {
+				err := l.scanEscapeSequence()
+				if err != nil {
+					return l.errorf(err.Error())
+				}
+			}
+
+		case isEOL(r):
+			l.emit(itemValue)
+			l.ignore()
+			return lexBeforeKey
+
+		case isEOF(r):
+			l.emit(itemValue)
+			l.emit(itemEOF)
+			return nil
+
+		default:
+			l.appendRune(r)
+		}
+	}
+}
+
+// scanEscapeSequence scans either one of the escaped characters
+// or a unicode literal. We expect to be after the escape character.
+func (l *lexer) scanEscapeSequence() error {
+	switch r := l.next(); {
+
+	case isEscapedCharacter(r):
+		l.appendRune(decodeEscapedCharacter(r))
+		return nil
+
+	case atUnicodeLiteral(r):
+		return l.scanUnicodeLiteral()
+
+	case isEOF(r):
+		return fmt.Errorf("premature EOF")
+
+	// silently drop the escape character and append the rune as is
+	default:
+		l.appendRune(r)
+		return nil
+	}
+}
+
+// scans a unicode literal in the form \uXXXX. We expect to be after the \u.
+func (l *lexer) scanUnicodeLiteral() error {
+	// scan the digits
+	d := make([]rune, 4)
+	for i := 0; i < 4; i++ {
+		d[i] = l.next()
+		if d[i] == eof || !strings.ContainsRune("0123456789abcdefABCDEF", d[i]) {
+			return fmt.Errorf("invalid unicode literal")
+		}
+	}
+
+	// decode the digits into a rune
+	r, err := strconv.ParseInt(string(d), 16, 0)
+	if err != nil {
+		return err
+	}
+
+	l.appendRune(rune(r))
+	return nil
+}
+
+// decodeEscapedCharacter returns the unescaped rune. We expect to be after the escape character.
+func decodeEscapedCharacter(r rune) rune {
+	switch r {
+	case 'f':
+		return '\f'
+	case 'n':
+		return '\n'
+	case 'r':
+		return '\r'
+	case 't':
+		return '\t'
+	default:
+		return r
+	}
+}
+
+// atUnicodeLiteral reports whether we are at a unicode literal.
+// The escape character has already been consumed.
+func atUnicodeLiteral(r rune) bool {
+	return r == 'u'
+}
+
+// isComment reports whether we are at the start of a comment.
+func isComment(r rune) bool {
+	return r == '#' || r == '!'
+}
+
+// isEndOfKey reports whether the rune terminates the current key.
+func isEndOfKey(r rune) bool {
+	return strings.ContainsRune(" \f\t\r\n:=", r)
+}
+
+// isEOF reports whether we are at EOF.
+func isEOF(r rune) bool {
+	return r == eof
+}
+
+// isEOL reports whether we are at a new line character.
+func isEOL(r rune) bool {
+	return r == '\n' || r == '\r'
+}
+
+// isEscape reports whether the rune is the escape character which
+// prefixes unicode literals and other escaped characters.
+func isEscape(r rune) bool {
+	return r == '\\'
+}
+
+// isEscapedCharacter reports whether we are at one of the characters that need escaping.
+// The escape character has already been consumed.
+func isEscapedCharacter(r rune) bool {
+	return strings.ContainsRune(" :=fnrt", r)
+}
+
+// isWhitespace reports whether the rune is a whitespace character.
+func isWhitespace(r rune) bool {
+	return strings.ContainsRune(whitespace, r)
+}
diff --git a/vendor/github.com/magiconair/properties/load.go b/vendor/github.com/magiconair/properties/load.go
new file mode 100644
index 0000000..3915c73
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/load.go
@@ -0,0 +1,203 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package properties
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strings"
+)
+
+// Encoding specifies encoding of the input data.
+type Encoding uint
+
+const (
+	// UTF8 interprets the input data as UTF-8.
+	UTF8 Encoding = 1 << iota
+
+	// ISO_8859_1 interprets the input data as ISO-8859-1.
+	ISO_8859_1
+)
+
+// Load reads a buffer into a Properties struct.
+func Load(buf []byte, enc Encoding) (*Properties, error) {
+	return loadBuf(buf, enc)
+}
+
+// LoadString reads an UTF8 string into a properties struct.
+func LoadString(s string) (*Properties, error) {
+	return loadBuf([]byte(s), UTF8)
+}
+
+// LoadFile reads a file into a Properties struct.
+func LoadFile(filename string, enc Encoding) (*Properties, error) {
+	return loadFiles([]string{filename}, enc, false)
+}
+
+// LoadFiles reads multiple files in the given order into
+// a Properties struct. If 'ignoreMissing' is true then
+// non-existent files will not be reported as error.
+func LoadFiles(filenames []string, enc Encoding, ignoreMissing bool) (*Properties, error) {
+	return loadFiles(filenames, enc, ignoreMissing)
+}
+
+// LoadURL reads the content of the URL into a Properties struct.
+//
+// The encoding is determined via the Content-Type header which
+// should be set to 'text/plain'. If the 'charset' parameter is
+// missing, 'iso-8859-1' or 'latin1' the encoding is set to
+// ISO-8859-1. If the 'charset' parameter is set to 'utf-8' the
+// encoding is set to UTF-8. A missing content type header is
+// interpreted as 'text/plain; charset=utf-8'.
+func LoadURL(url string) (*Properties, error) {
+	return loadURLs([]string{url}, false)
+}
+
+// LoadURLs reads the content of multiple URLs in the given order into a
+// Properties struct. If 'ignoreMissing' is true then a 404 status code will
+// not be reported as error. See LoadURL for the Content-Type header
+// and the encoding.
+func LoadURLs(urls []string, ignoreMissing bool) (*Properties, error) {
+	return loadURLs(urls, ignoreMissing)
+}
+
+// MustLoadString reads an UTF8 string into a Properties struct and
+// panics on error.
+func MustLoadString(s string) *Properties {
+	return must(LoadString(s))
+}
+
+// MustLoadFile reads a file into a Properties struct and
+// panics on error.
+func MustLoadFile(filename string, enc Encoding) *Properties {
+	return must(LoadFile(filename, enc))
+}
+
+// MustLoadFiles reads multiple files in the given order into
+// a Properties struct and panics on error. If 'ignoreMissing'
+// is true then non-existent files will not be reported as error.
+func MustLoadFiles(filenames []string, enc Encoding, ignoreMissing bool) *Properties {
+	return must(LoadFiles(filenames, enc, ignoreMissing))
+}
+
+// MustLoadURL reads the content of a URL into a Properties struct and
+// panics on error.
+func MustLoadURL(url string) *Properties {
+	return must(LoadURL(url))
+}
+
+// MustLoadFiles reads the content of multiple URLs in the given order into a
+// Properties struct and panics on error. If 'ignoreMissing' is true then a 404
+// status code will not be reported as error.
+func MustLoadURLs(urls []string, ignoreMissing bool) *Properties {
+	return must(LoadURLs(urls, ignoreMissing))
+}
+
+func loadBuf(buf []byte, enc Encoding) (*Properties, error) {
+	p, err := parse(convert(buf, enc))
+	if err != nil {
+		return nil, err
+	}
+	return p, p.check()
+}
+
+func loadFiles(filenames []string, enc Encoding, ignoreMissing bool) (*Properties, error) {
+	var buf bytes.Buffer
+	for _, filename := range filenames {
+		f, err := expandFilename(filename)
+		if err != nil {
+			return nil, err
+		}
+
+		data, err := ioutil.ReadFile(f)
+		if err != nil {
+			if ignoreMissing && os.IsNotExist(err) {
+				LogPrintf("properties: %s not found. skipping", filename)
+				continue
+			}
+			return nil, err
+		}
+
+		// concatenate the buffers and add a new line in case
+		// the previous file didn't end with a new line
+		buf.Write(data)
+		buf.WriteRune('\n')
+	}
+	return loadBuf(buf.Bytes(), enc)
+}
+
+func loadURLs(urls []string, ignoreMissing bool) (*Properties, error) {
+	var buf bytes.Buffer
+	for _, u := range urls {
+		resp, err := http.Get(u)
+		if err != nil {
+			return nil, fmt.Errorf("properties: error fetching %q. %s", u, err)
+		}
+		if resp.StatusCode == 404 && ignoreMissing {
+			LogPrintf("properties: %s returned %d. skipping", u, resp.StatusCode)
+			continue
+		}
+		if resp.StatusCode != 200 {
+			return nil, fmt.Errorf("properties: %s returned %d", u, resp.StatusCode)
+		}
+		body, err := ioutil.ReadAll(resp.Body)
+		resp.Body.Close()
+		if err != nil {
+			return nil, fmt.Errorf("properties: %s error reading response. %s", u, err)
+		}
+
+		ct := resp.Header.Get("Content-Type")
+		var enc Encoding
+		switch strings.ToLower(ct) {
+		case "text/plain", "text/plain; charset=iso-8859-1", "text/plain; charset=latin1":
+			enc = ISO_8859_1
+		case "", "text/plain; charset=utf-8":
+			enc = UTF8
+		default:
+			return nil, fmt.Errorf("properties: invalid content type %s", ct)
+		}
+
+		buf.WriteString(convert(body, enc))
+		buf.WriteRune('\n')
+	}
+	return loadBuf(buf.Bytes(), UTF8)
+}
+
+func must(p *Properties, err error) *Properties {
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return p
+}
+
+// expandFilename expands ${ENV_VAR} expressions in a filename.
+// If the environment variable does not exist then it will be replaced
+// with an empty string. Malformed expressions like "${ENV_VAR" will
+// be reported as error.
+func expandFilename(filename string) (string, error) {
+	return expand(filename, make(map[string]bool), "${", "}", make(map[string]string))
+}
+
+// Interprets a byte buffer either as an ISO-8859-1 or UTF-8 encoded string.
+// For ISO-8859-1 we can convert each byte straight into a rune since the
+// first 256 unicode code points cover ISO-8859-1.
+func convert(buf []byte, enc Encoding) string {
+	switch enc {
+	case UTF8:
+		return string(buf)
+	case ISO_8859_1:
+		runes := make([]rune, len(buf))
+		for i, b := range buf {
+			runes[i] = rune(b)
+		}
+		return string(runes)
+	default:
+		ErrorHandler(fmt.Errorf("unsupported encoding %v", enc))
+	}
+	panic("ErrorHandler should exit")
+}
diff --git a/vendor/github.com/magiconair/properties/parser.go b/vendor/github.com/magiconair/properties/parser.go
new file mode 100644
index 0000000..ff0e1e1
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/parser.go
@@ -0,0 +1,95 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package properties
+
+import (
+	"fmt"
+	"runtime"
+)
+
+type parser struct {
+	lex *lexer
+}
+
+func parse(input string) (properties *Properties, err error) {
+	p := &parser{lex: lex(input)}
+	defer p.recover(&err)
+
+	properties = NewProperties()
+	key := ""
+	comments := []string{}
+
+	for {
+		token := p.expectOneOf(itemComment, itemKey, itemEOF)
+		switch token.typ {
+		case itemEOF:
+			goto done
+		case itemComment:
+			comments = append(comments, token.val)
+			continue
+		case itemKey:
+			key = token.val
+			if _, ok := properties.m[key]; !ok {
+				properties.k = append(properties.k, key)
+			}
+		}
+
+		token = p.expectOneOf(itemValue, itemEOF)
+		if len(comments) > 0 {
+			properties.c[key] = comments
+			comments = []string{}
+		}
+		switch token.typ {
+		case itemEOF:
+			properties.m[key] = ""
+			goto done
+		case itemValue:
+			properties.m[key] = token.val
+		}
+	}
+
+done:
+	return properties, nil
+}
+
+func (p *parser) errorf(format string, args ...interface{}) {
+	format = fmt.Sprintf("properties: Line %d: %s", p.lex.lineNumber(), format)
+	panic(fmt.Errorf(format, args...))
+}
+
+func (p *parser) expect(expected itemType) (token item) {
+	token = p.lex.nextItem()
+	if token.typ != expected {
+		p.unexpected(token)
+	}
+	return token
+}
+
+func (p *parser) expectOneOf(expected ...itemType) (token item) {
+	token = p.lex.nextItem()
+	for _, v := range expected {
+		if token.typ == v {
+			return token
+		}
+	}
+	p.unexpected(token)
+	panic("unexpected token")
+}
+
+func (p *parser) unexpected(token item) {
+	p.errorf(token.String())
+}
+
+// recover is the handler that turns panics into returns from the top level of Parse.
+func (p *parser) recover(errp *error) {
+	e := recover()
+	if e != nil {
+		if _, ok := e.(runtime.Error); ok {
+			panic(e)
+		}
+		*errp = e.(error)
+	}
+	return
+}
diff --git a/vendor/github.com/magiconair/properties/properties.go b/vendor/github.com/magiconair/properties/properties.go
new file mode 100644
index 0000000..884ef4e
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/properties.go
@@ -0,0 +1,750 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package properties
+
+// BUG(frank): Set() does not check for invalid unicode literals since this is currently handled by the lexer.
+// BUG(frank): Write() does not allow to configure the newline character. Therefore, on Windows LF is used.
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+// ErrorHandlerFunc defines the type of function which handles failures
+// of the MustXXX() functions. An error handler function must exit
+// the application after handling the error.
+type ErrorHandlerFunc func(error)
+
+// ErrorHandler is the function which handles failures of the MustXXX()
+// functions. The default is LogFatalHandler.
+var ErrorHandler ErrorHandlerFunc = LogFatalHandler
+
+type LogHandlerFunc func(fmt string, args ...interface{})
+
+var LogPrintf LogHandlerFunc = log.Printf
+
+// LogFatalHandler handles the error by logging a fatal error and exiting.
+func LogFatalHandler(err error) {
+	log.Fatal(err)
+}
+
+// PanicHandler handles the error by panicking.
+func PanicHandler(err error) {
+	panic(err)
+}
+
+// -----------------------------------------------------------------------------
+
+// A Properties contains the key/value pairs from the properties input.
+// All values are stored in unexpanded form and are expanded at runtime
+type Properties struct {
+	// Pre-/Postfix for property expansion.
+	Prefix  string
+	Postfix string
+
+	// DisableExpansion controls the expansion of properties on Get()
+	// and the check for circular references on Set(). When set to
+	// true Properties behaves like a simple key/value store and does
+	// not check for circular references on Get() or on Set().
+	DisableExpansion bool
+
+	// Stores the key/value pairs
+	m map[string]string
+
+	// Stores the comments per key.
+	c map[string][]string
+
+	// Stores the keys in order of appearance.
+	k []string
+}
+
+// NewProperties creates a new Properties struct with the default
+// configuration for "${key}" expressions.
+func NewProperties() *Properties {
+	return &Properties{
+		Prefix:  "${",
+		Postfix: "}",
+		m:       map[string]string{},
+		c:       map[string][]string{},
+		k:       []string{},
+	}
+}
+
+// Get returns the expanded value for the given key if exists.
+// Otherwise, ok is false.
+func (p *Properties) Get(key string) (value string, ok bool) {
+	v, ok := p.m[key]
+	if p.DisableExpansion {
+		return v, ok
+	}
+	if !ok {
+		return "", false
+	}
+
+	expanded, err := p.expand(v)
+
+	// we guarantee that the expanded value is free of
+	// circular references and malformed expressions
+	// so we panic if we still get an error here.
+	if err != nil {
+		ErrorHandler(fmt.Errorf("%s in %q", err, key+" = "+v))
+	}
+
+	return expanded, true
+}
+
+// MustGet returns the expanded value for the given key if exists.
+// Otherwise, it panics.
+func (p *Properties) MustGet(key string) string {
+	if v, ok := p.Get(key); ok {
+		return v
+	}
+	ErrorHandler(invalidKeyError(key))
+	panic("ErrorHandler should exit")
+}
+
+// ----------------------------------------------------------------------------
+
+// ClearComments removes the comments for all keys.
+func (p *Properties) ClearComments() {
+	p.c = map[string][]string{}
+}
+
+// ----------------------------------------------------------------------------
+
+// GetComment returns the last comment before the given key or an empty string.
+func (p *Properties) GetComment(key string) string {
+	comments, ok := p.c[key]
+	if !ok || len(comments) == 0 {
+		return ""
+	}
+	return comments[len(comments)-1]
+}
+
+// ----------------------------------------------------------------------------
+
+// GetComments returns all comments that appeared before the given key or nil.
+func (p *Properties) GetComments(key string) []string {
+	if comments, ok := p.c[key]; ok {
+		return comments
+	}
+	return nil
+}
+
+// ----------------------------------------------------------------------------
+
+// SetComment sets the comment for the key.
+func (p *Properties) SetComment(key, comment string) {
+	p.c[key] = []string{comment}
+}
+
+// ----------------------------------------------------------------------------
+
+// SetComments sets the comments for the key. If the comments are nil then
+// all comments for this key are deleted.
+func (p *Properties) SetComments(key string, comments []string) {
+	if comments == nil {
+		delete(p.c, key)
+		return
+	}
+	p.c[key] = comments
+}
+
+// ----------------------------------------------------------------------------
+
+// GetBool checks if the expanded value is one of '1', 'yes',
+// 'true' or 'on' if the key exists. The comparison is case-insensitive.
+// If the key does not exist the default value is returned.
+func (p *Properties) GetBool(key string, def bool) bool {
+	v, err := p.getBool(key)
+	if err != nil {
+		return def
+	}
+	return v
+}
+
+// MustGetBool checks if the expanded value is one of '1', 'yes',
+// 'true' or 'on' if the key exists. The comparison is case-insensitive.
+// If the key does not exist the function panics.
+func (p *Properties) MustGetBool(key string) bool {
+	v, err := p.getBool(key)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return v
+}
+
+func (p *Properties) getBool(key string) (value bool, err error) {
+	if v, ok := p.Get(key); ok {
+		return boolVal(v), nil
+	}
+	return false, invalidKeyError(key)
+}
+
+func boolVal(v string) bool {
+	v = strings.ToLower(v)
+	return v == "1" || v == "true" || v == "yes" || v == "on"
+}
+
+// ----------------------------------------------------------------------------
+
+// GetDuration parses the expanded value as an time.Duration (in ns) if the
+// key exists. If key does not exist or the value cannot be parsed the default
+// value is returned. In almost all cases you want to use GetParsedDuration().
+func (p *Properties) GetDuration(key string, def time.Duration) time.Duration {
+	v, err := p.getInt64(key)
+	if err != nil {
+		return def
+	}
+	return time.Duration(v)
+}
+
+// MustGetDuration parses the expanded value as an time.Duration (in ns) if
+// the key exists. If key does not exist or the value cannot be parsed the
+// function panics. In almost all cases you want to use MustGetParsedDuration().
+func (p *Properties) MustGetDuration(key string) time.Duration {
+	v, err := p.getInt64(key)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return time.Duration(v)
+}
+
+// ----------------------------------------------------------------------------
+
+// GetParsedDuration parses the expanded value with time.ParseDuration() if the key exists.
+// If key does not exist or the value cannot be parsed the default
+// value is returned.
+func (p *Properties) GetParsedDuration(key string, def time.Duration) time.Duration {
+	s, ok := p.Get(key)
+	if !ok {
+		return def
+	}
+	v, err := time.ParseDuration(s)
+	if err != nil {
+		return def
+	}
+	return v
+}
+
+// MustGetParsedDuration parses the expanded value with time.ParseDuration() if the key exists.
+// If key does not exist or the value cannot be parsed the function panics.
+func (p *Properties) MustGetParsedDuration(key string) time.Duration {
+	s, ok := p.Get(key)
+	if !ok {
+		ErrorHandler(invalidKeyError(key))
+	}
+	v, err := time.ParseDuration(s)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return v
+}
+
+// ----------------------------------------------------------------------------
+
+// GetFloat64 parses the expanded value as a float64 if the key exists.
+// If key does not exist or the value cannot be parsed the default
+// value is returned.
+func (p *Properties) GetFloat64(key string, def float64) float64 {
+	v, err := p.getFloat64(key)
+	if err != nil {
+		return def
+	}
+	return v
+}
+
+// MustGetFloat64 parses the expanded value as a float64 if the key exists.
+// If key does not exist or the value cannot be parsed the function panics.
+func (p *Properties) MustGetFloat64(key string) float64 {
+	v, err := p.getFloat64(key)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return v
+}
+
+func (p *Properties) getFloat64(key string) (value float64, err error) {
+	if v, ok := p.Get(key); ok {
+		value, err = strconv.ParseFloat(v, 64)
+		if err != nil {
+			return 0, err
+		}
+		return value, nil
+	}
+	return 0, invalidKeyError(key)
+}
+
+// ----------------------------------------------------------------------------
+
+// GetInt parses the expanded value as an int if the key exists.
+// If key does not exist or the value cannot be parsed the default
+// value is returned. If the value does not fit into an int the
+// function panics with an out of range error.
+func (p *Properties) GetInt(key string, def int) int {
+	v, err := p.getInt64(key)
+	if err != nil {
+		return def
+	}
+	return intRangeCheck(key, v)
+}
+
+// MustGetInt parses the expanded value as an int if the key exists.
+// If key does not exist or the value cannot be parsed the function panics.
+// If the value does not fit into an int the function panics with
+// an out of range error.
+func (p *Properties) MustGetInt(key string) int {
+	v, err := p.getInt64(key)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return intRangeCheck(key, v)
+}
+
+// ----------------------------------------------------------------------------
+
+// GetInt64 parses the expanded value as an int64 if the key exists.
+// If key does not exist or the value cannot be parsed the default
+// value is returned.
+func (p *Properties) GetInt64(key string, def int64) int64 {
+	v, err := p.getInt64(key)
+	if err != nil {
+		return def
+	}
+	return v
+}
+
+// MustGetInt64 parses the expanded value as an int if the key exists.
+// If key does not exist or the value cannot be parsed the function panics.
+func (p *Properties) MustGetInt64(key string) int64 {
+	v, err := p.getInt64(key)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return v
+}
+
+func (p *Properties) getInt64(key string) (value int64, err error) {
+	if v, ok := p.Get(key); ok {
+		value, err = strconv.ParseInt(v, 10, 64)
+		if err != nil {
+			return 0, err
+		}
+		return value, nil
+	}
+	return 0, invalidKeyError(key)
+}
+
+// ----------------------------------------------------------------------------
+
+// GetUint parses the expanded value as an uint if the key exists.
+// If key does not exist or the value cannot be parsed the default
+// value is returned. If the value does not fit into an int the
+// function panics with an out of range error.
+func (p *Properties) GetUint(key string, def uint) uint {
+	v, err := p.getUint64(key)
+	if err != nil {
+		return def
+	}
+	return uintRangeCheck(key, v)
+}
+
+// MustGetUint parses the expanded value as an int if the key exists.
+// If key does not exist or the value cannot be parsed the function panics.
+// If the value does not fit into an int the function panics with
+// an out of range error.
+func (p *Properties) MustGetUint(key string) uint {
+	v, err := p.getUint64(key)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return uintRangeCheck(key, v)
+}
+
+// ----------------------------------------------------------------------------
+
+// GetUint64 parses the expanded value as an uint64 if the key exists.
+// If key does not exist or the value cannot be parsed the default
+// value is returned.
+func (p *Properties) GetUint64(key string, def uint64) uint64 {
+	v, err := p.getUint64(key)
+	if err != nil {
+		return def
+	}
+	return v
+}
+
+// MustGetUint64 parses the expanded value as an int if the key exists.
+// If key does not exist or the value cannot be parsed the function panics.
+func (p *Properties) MustGetUint64(key string) uint64 {
+	v, err := p.getUint64(key)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return v
+}
+
+func (p *Properties) getUint64(key string) (value uint64, err error) {
+	if v, ok := p.Get(key); ok {
+		value, err = strconv.ParseUint(v, 10, 64)
+		if err != nil {
+			return 0, err
+		}
+		return value, nil
+	}
+	return 0, invalidKeyError(key)
+}
+
+// ----------------------------------------------------------------------------
+
+// GetString returns the expanded value for the given key if exists or
+// the default value otherwise.
+func (p *Properties) GetString(key, def string) string {
+	if v, ok := p.Get(key); ok {
+		return v
+	}
+	return def
+}
+
+// MustGetString returns the expanded value for the given key if exists or
+// panics otherwise.
+func (p *Properties) MustGetString(key string) string {
+	if v, ok := p.Get(key); ok {
+		return v
+	}
+	ErrorHandler(invalidKeyError(key))
+	panic("ErrorHandler should exit")
+}
+
+// ----------------------------------------------------------------------------
+
+// Filter returns a new properties object which contains all properties
+// for which the key matches the pattern.
+func (p *Properties) Filter(pattern string) (*Properties, error) {
+	re, err := regexp.Compile(pattern)
+	if err != nil {
+		return nil, err
+	}
+
+	return p.FilterRegexp(re), nil
+}
+
+// FilterRegexp returns a new properties object which contains all properties
+// for which the key matches the regular expression.
+func (p *Properties) FilterRegexp(re *regexp.Regexp) *Properties {
+	pp := NewProperties()
+	for _, k := range p.k {
+		if re.MatchString(k) {
+			pp.Set(k, p.m[k])
+		}
+	}
+	return pp
+}
+
+// FilterPrefix returns a new properties object with a subset of all keys
+// with the given prefix.
+func (p *Properties) FilterPrefix(prefix string) *Properties {
+	pp := NewProperties()
+	for _, k := range p.k {
+		if strings.HasPrefix(k, prefix) {
+			pp.Set(k, p.m[k])
+		}
+	}
+	return pp
+}
+
+// FilterStripPrefix returns a new properties object with a subset of all keys
+// with the given prefix and the prefix removed from the keys.
+func (p *Properties) FilterStripPrefix(prefix string) *Properties {
+	pp := NewProperties()
+	n := len(prefix)
+	for _, k := range p.k {
+		if len(k) > len(prefix) && strings.HasPrefix(k, prefix) {
+			pp.Set(k[n:], p.m[k])
+		}
+	}
+	return pp
+}
+
+// Len returns the number of keys.
+func (p *Properties) Len() int {
+	return len(p.m)
+}
+
+// Keys returns all keys in the same order as in the input.
+func (p *Properties) Keys() []string {
+	keys := make([]string, len(p.k))
+	for i, k := range p.k {
+		keys[i] = k
+	}
+	return keys
+}
+
+// Set sets the property key to the corresponding value.
+// If a value for key existed before then ok is true and prev
+// contains the previous value. If the value contains a
+// circular reference or a malformed expression then
+// an error is returned.
+// An empty key is silently ignored.
+func (p *Properties) Set(key, value string) (prev string, ok bool, err error) {
+	if key == "" {
+		return "", false, nil
+	}
+
+	// if expansion is disabled we allow circular references
+	if p.DisableExpansion {
+		prev, ok = p.Get(key)
+		p.m[key] = value
+		return prev, ok, nil
+	}
+
+	// to check for a circular reference we temporarily need
+	// to set the new value. If there is an error then revert
+	// to the previous state. Only if all tests are successful
+	// then we add the key to the p.k list.
+	prev, ok = p.Get(key)
+	p.m[key] = value
+
+	// now check for a circular reference
+	_, err = p.expand(value)
+	if err != nil {
+
+		// revert to the previous state
+		if ok {
+			p.m[key] = prev
+		} else {
+			delete(p.m, key)
+		}
+
+		return "", false, err
+	}
+
+	if !ok {
+		p.k = append(p.k, key)
+	}
+
+	return prev, ok, nil
+}
+
+// MustSet sets the property key to the corresponding value.
+// If a value for key existed before then ok is true and prev
+// contains the previous value. An empty key is silently ignored.
+func (p *Properties) MustSet(key, value string) (prev string, ok bool) {
+	prev, ok, err := p.Set(key, value)
+	if err != nil {
+		ErrorHandler(err)
+	}
+	return prev, ok
+}
+
+// String returns a string of all expanded 'key = value' pairs.
+func (p *Properties) String() string {
+	var s string
+	for _, key := range p.k {
+		value, _ := p.Get(key)
+		s = fmt.Sprintf("%s%s = %s\n", s, key, value)
+	}
+	return s
+}
+
+// Write writes all unexpanded 'key = value' pairs to the given writer.
+// Write returns the number of bytes written and any write error encountered.
+func (p *Properties) Write(w io.Writer, enc Encoding) (n int, err error) {
+	return p.WriteComment(w, "", enc)
+}
+
+// WriteComment writes all unexpanced 'key = value' pairs to the given writer.
+// If prefix is not empty then comments are written with a blank line and the
+// given prefix. The prefix should be either "# " or "! " to be compatible with
+// the properties file format. Otherwise, the properties parser will not be
+// able to read the file back in. It returns the number of bytes written and
+// any write error encountered.
+func (p *Properties) WriteComment(w io.Writer, prefix string, enc Encoding) (n int, err error) {
+	var x int
+
+	for _, key := range p.k {
+		value := p.m[key]
+
+		if prefix != "" {
+			if comments, ok := p.c[key]; ok {
+				// don't print comments if they are all empty
+				allEmpty := true
+				for _, c := range comments {
+					if c != "" {
+						allEmpty = false
+						break
+					}
+				}
+
+				if !allEmpty {
+					// add a blank line between entries but not at the top
+					if len(comments) > 0 && n > 0 {
+						x, err = fmt.Fprintln(w)
+						if err != nil {
+							return
+						}
+						n += x
+					}
+
+					for _, c := range comments {
+						x, err = fmt.Fprintf(w, "%s%s\n", prefix, encode(c, "", enc))
+						if err != nil {
+							return
+						}
+						n += x
+					}
+				}
+			}
+		}
+
+		x, err = fmt.Fprintf(w, "%s = %s\n", encode(key, " :", enc), encode(value, "", enc))
+		if err != nil {
+			return
+		}
+		n += x
+	}
+	return
+}
+
+// ----------------------------------------------------------------------------
+
+// Delete removes the key and its comments.
+func (p *Properties) Delete(key string) {
+	delete(p.m, key)
+	delete(p.c, key)
+	newKeys := []string{}
+	for _, k := range p.k {
+		if k != key {
+			newKeys = append(newKeys, key)
+		}
+	}
+	p.k = newKeys
+}
+
+// ----------------------------------------------------------------------------
+
+// check expands all values and returns an error if a circular reference or
+// a malformed expression was found.
+func (p *Properties) check() error {
+	for _, value := range p.m {
+		if _, err := p.expand(value); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (p *Properties) expand(input string) (string, error) {
+	// no pre/postfix -> nothing to expand
+	if p.Prefix == "" && p.Postfix == "" {
+		return input, nil
+	}
+
+	return expand(input, make(map[string]bool), p.Prefix, p.Postfix, p.m)
+}
+
+// expand recursively expands expressions of '(prefix)key(postfix)' to their corresponding values.
+// The function keeps track of the keys that were already expanded and stops if it
+// detects a circular reference or a malformed expression of the form '(prefix)key'.
+func expand(s string, keys map[string]bool, prefix, postfix string, values map[string]string) (string, error) {
+	start := strings.Index(s, prefix)
+	if start == -1 {
+		return s, nil
+	}
+
+	keyStart := start + len(prefix)
+	keyLen := strings.Index(s[keyStart:], postfix)
+	if keyLen == -1 {
+		return "", fmt.Errorf("malformed expression")
+	}
+
+	end := keyStart + keyLen + len(postfix) - 1
+	key := s[keyStart : keyStart+keyLen]
+
+	// fmt.Printf("s:%q pp:%q start:%d end:%d keyStart:%d keyLen:%d key:%q\n", s, prefix + "..." + postfix, start, end, keyStart, keyLen, key)
+
+	if _, ok := keys[key]; ok {
+		return "", fmt.Errorf("circular reference")
+	}
+
+	val, ok := values[key]
+	if !ok {
+		val = os.Getenv(key)
+	}
+
+	// remember that we've seen the key
+	keys[key] = true
+
+	return expand(s[:start]+val+s[end+1:], keys, prefix, postfix, values)
+}
+
+// encode encodes a UTF-8 string to ISO-8859-1 and escapes some characters.
+func encode(s string, special string, enc Encoding) string {
+	switch enc {
+	case UTF8:
+		return encodeUtf8(s, special)
+	case ISO_8859_1:
+		return encodeIso(s, special)
+	default:
+		panic(fmt.Sprintf("unsupported encoding %v", enc))
+	}
+}
+
+func encodeUtf8(s string, special string) string {
+	v := ""
+	for pos := 0; pos < len(s); {
+		r, w := utf8.DecodeRuneInString(s[pos:])
+		pos += w
+		v += escape(r, special)
+	}
+	return v
+}
+
+func encodeIso(s string, special string) string {
+	var r rune
+	var w int
+	var v string
+	for pos := 0; pos < len(s); {
+		switch r, w = utf8.DecodeRuneInString(s[pos:]); {
+		case r < 1<<8: // single byte rune -> escape special chars only
+			v += escape(r, special)
+		case r < 1<<16: // two byte rune -> unicode literal
+			v += fmt.Sprintf("\\u%04x", r)
+		default: // more than two bytes per rune -> can't encode
+			v += "?"
+		}
+		pos += w
+	}
+	return v
+}
+
+func escape(r rune, special string) string {
+	switch r {
+	case '\f':
+		return "\\f"
+	case '\n':
+		return "\\n"
+	case '\r':
+		return "\\r"
+	case '\t':
+		return "\\t"
+	default:
+		if strings.ContainsRune(special, r) {
+			return "\\" + string(r)
+		}
+		return string(r)
+	}
+}
+
+func invalidKeyError(key string) error {
+	return fmt.Errorf("unknown property: %s", key)
+}
diff --git a/vendor/github.com/magiconair/properties/rangecheck.go b/vendor/github.com/magiconair/properties/rangecheck.go
new file mode 100644
index 0000000..d9ce280
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/rangecheck.go
@@ -0,0 +1,31 @@
+// Copyright 2016 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package properties
+
+import (
+	"fmt"
+	"math"
+)
+
+// make this a var to overwrite it in a test
+var is32Bit = ^uint(0) == math.MaxUint32
+
+// intRangeCheck checks if the value fits into the int type and
+// panics if it does not.
+func intRangeCheck(key string, v int64) int {
+	if is32Bit && (v < math.MinInt32 || v > math.MaxInt32) {
+		panic(fmt.Sprintf("Value %d for key %s out of range", v, key))
+	}
+	return int(v)
+}
+
+// uintRangeCheck checks if the value fits into the uint type and
+// panics if it does not.
+func uintRangeCheck(key string, v uint64) uint {
+	if is32Bit && v > math.MaxUint32 {
+		panic(fmt.Sprintf("Value %d for key %s out of range", v, key))
+	}
+	return uint(v)
+}
diff --git a/vendor/github.com/mitchellh/mapstructure/LICENSE b/vendor/github.com/mitchellh/mapstructure/LICENSE
new file mode 100644
index 0000000..f9c841a
--- /dev/null
+++ b/vendor/github.com/mitchellh/mapstructure/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Mitchell Hashimoto
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/vendor/github.com/mitchellh/mapstructure/README.md b/vendor/github.com/mitchellh/mapstructure/README.md
new file mode 100644
index 0000000..659d688
--- /dev/null
+++ b/vendor/github.com/mitchellh/mapstructure/README.md
@@ -0,0 +1,46 @@
+# mapstructure
+
+mapstructure is a Go library for decoding generic map values to structures
+and vice versa, while providing helpful error handling.
+
+This library is most useful when decoding values from some data stream (JSON,
+Gob, etc.) where you don't _quite_ know the structure of the underlying data
+until you read a part of it. You can therefore read a `map[string]interface{}`
+and use this library to decode it into the proper underlying native Go
+structure.
+
+## Installation
+
+Standard `go get`:
+
+```
+$ go get github.com/mitchellh/mapstructure
+```
+
+## Usage & Example
+
+For usage and examples see the [Godoc](http://godoc.org/github.com/mitchellh/mapstructure).
+
+The `Decode` function has examples associated with it there.
+
+## But Why?!
+
+Go offers fantastic standard libraries for decoding formats such as JSON.
+The standard method is to have a struct pre-created, and populate that struct
+from the bytes of the encoded format. This is great, but the problem is if
+you have configuration or an encoding that changes slightly depending on
+specific fields. For example, consider this JSON:
+
+```json
+{
+  "type": "person",
+  "name": "Mitchell"
+}
+```
+
+Perhaps we can't populate a specific structure without first reading
+the "type" field from the JSON. We could always do two passes over the
+decoding of the JSON (reading the "type" first, and the rest later).
+However, it is much simpler to just decode this into a `map[string]interface{}`
+structure, read the "type" key, then use something like this library
+to decode it into the proper structure.
diff --git a/vendor/github.com/mitchellh/mapstructure/decode_hooks.go b/vendor/github.com/mitchellh/mapstructure/decode_hooks.go
new file mode 100644
index 0000000..aa91f76
--- /dev/null
+++ b/vendor/github.com/mitchellh/mapstructure/decode_hooks.go
@@ -0,0 +1,151 @@
+package mapstructure
+
+import (
+	"errors"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// typedDecodeHook takes a raw DecodeHookFunc (an interface{}) and turns
+// it into the proper DecodeHookFunc type, such as DecodeHookFuncType.
+func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc {
+	// Create variables here so we can reference them with the reflect pkg
+	var f1 DecodeHookFuncType
+	var f2 DecodeHookFuncKind
+
+	// Fill in the variables into this interface and the rest is done
+	// automatically using the reflect package.
+	potential := []interface{}{f1, f2}
+
+	v := reflect.ValueOf(h)
+	vt := v.Type()
+	for _, raw := range potential {
+		pt := reflect.ValueOf(raw).Type()
+		if vt.ConvertibleTo(pt) {
+			return v.Convert(pt).Interface()
+		}
+	}
+
+	return nil
+}
+
+// DecodeHookExec executes the given decode hook. This should be used
+// since it'll naturally degrade to the older backwards compatible DecodeHookFunc
+// that took reflect.Kind instead of reflect.Type.
+func DecodeHookExec(
+	raw DecodeHookFunc,
+	from reflect.Type, to reflect.Type,
+	data interface{}) (interface{}, error) {
+	// Build our arguments that reflect expects
+	argVals := make([]reflect.Value, 3)
+	argVals[0] = reflect.ValueOf(from)
+	argVals[1] = reflect.ValueOf(to)
+	argVals[2] = reflect.ValueOf(data)
+
+	switch f := typedDecodeHook(raw).(type) {
+	case DecodeHookFuncType:
+		return f(from, to, data)
+	case DecodeHookFuncKind:
+		return f(from.Kind(), to.Kind(), data)
+	default:
+		return nil, errors.New("invalid decode hook signature")
+	}
+}
+
+// ComposeDecodeHookFunc creates a single DecodeHookFunc that
+// automatically composes multiple DecodeHookFuncs.
+//
+// The composed funcs are called in order, with the result of the
+// previous transformation.
+func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		var err error
+		for _, f1 := range fs {
+			data, err = DecodeHookExec(f1, f, t, data)
+			if err != nil {
+				return nil, err
+			}
+
+			// Modify the from kind to be correct with the new data
+			f = reflect.ValueOf(data).Type()
+		}
+
+		return data, nil
+	}
+}
+
+// StringToSliceHookFunc returns a DecodeHookFunc that converts
+// string to []string by splitting on the given sep.
+func StringToSliceHookFunc(sep string) DecodeHookFunc {
+	return func(
+		f reflect.Kind,
+		t reflect.Kind,
+		data interface{}) (interface{}, error) {
+		if f != reflect.String || t != reflect.Slice {
+			return data, nil
+		}
+
+		raw := data.(string)
+		if raw == "" {
+			return []string{}, nil
+		}
+
+		return strings.Split(raw, sep), nil
+	}
+}
+
+// StringToTimeDurationHookFunc returns a DecodeHookFunc that converts
+// strings to time.Duration.
+func StringToTimeDurationHookFunc() DecodeHookFunc {
+	return func(
+		f reflect.Type,
+		t reflect.Type,
+		data interface{}) (interface{}, error) {
+		if f.Kind() != reflect.String {
+			return data, nil
+		}
+		if t != reflect.TypeOf(time.Duration(5)) {
+			return data, nil
+		}
+
+		// Convert it by parsing
+		return time.ParseDuration(data.(string))
+	}
+}
+
+func WeaklyTypedHook(
+	f reflect.Kind,
+	t reflect.Kind,
+	data interface{}) (interface{}, error) {
+	dataVal := reflect.ValueOf(data)
+	switch t {
+	case reflect.String:
+		switch f {
+		case reflect.Bool:
+			if dataVal.Bool() {
+				return "1", nil
+			} else {
+				return "0", nil
+			}
+		case reflect.Float32:
+			return strconv.FormatFloat(dataVal.Float(), 'f', -1, 64), nil
+		case reflect.Int:
+			return strconv.FormatInt(dataVal.Int(), 10), nil
+		case reflect.Slice:
+			dataType := dataVal.Type()
+			elemKind := dataType.Elem().Kind()
+			if elemKind == reflect.Uint8 {
+				return string(dataVal.Interface().([]uint8)), nil
+			}
+		case reflect.Uint:
+			return strconv.FormatUint(dataVal.Uint(), 10), nil
+		}
+	}
+
+	return data, nil
+}
diff --git a/vendor/github.com/mitchellh/mapstructure/error.go b/vendor/github.com/mitchellh/mapstructure/error.go
new file mode 100644
index 0000000..47a99e5
--- /dev/null
+++ b/vendor/github.com/mitchellh/mapstructure/error.go
@@ -0,0 +1,50 @@
+package mapstructure
+
+import (
+	"errors"
+	"fmt"
+	"sort"
+	"strings"
+)
+
+// Error implements the error interface and can represents multiple
+// errors that occur in the course of a single decode.
+type Error struct {
+	Errors []string
+}
+
+func (e *Error) Error() string {
+	points := make([]string, len(e.Errors))
+	for i, err := range e.Errors {
+		points[i] = fmt.Sprintf("* %s", err)
+	}
+
+	sort.Strings(points)
+	return fmt.Sprintf(
+		"%d error(s) decoding:\n\n%s",
+		len(e.Errors), strings.Join(points, "\n"))
+}
+
+// WrappedErrors implements the errwrap.Wrapper interface to make this
+// return value more useful with the errwrap and go-multierror libraries.
+func (e *Error) WrappedErrors() []error {
+	if e == nil {
+		return nil
+	}
+
+	result := make([]error, len(e.Errors))
+	for i, e := range e.Errors {
+		result[i] = errors.New(e)
+	}
+
+	return result
+}
+
+func appendErrors(errors []string, err error) []string {
+	switch e := err.(type) {
+	case *Error:
+		return append(errors, e.Errors...)
+	default:
+		return append(errors, e.Error())
+	}
+}
diff --git a/vendor/github.com/mitchellh/mapstructure/mapstructure.go b/vendor/github.com/mitchellh/mapstructure/mapstructure.go
new file mode 100644
index 0000000..a367a95
--- /dev/null
+++ b/vendor/github.com/mitchellh/mapstructure/mapstructure.go
@@ -0,0 +1,767 @@
+// The mapstructure package exposes functionality to convert an
+// abitrary map[string]interface{} into a native Go structure.
+//
+// The Go structure can be arbitrarily complex, containing slices,
+// other structs, etc. and the decoder will properly decode nested
+// maps and so on into the proper structures in the native Go struct.
+// See the examples to see what the decoder is capable of.
+package mapstructure
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// DecodeHookFunc is the callback function that can be used for
+// data transformations. See "DecodeHook" in the DecoderConfig
+// struct.
+//
+// The type should be DecodeHookFuncType or DecodeHookFuncKind.
+// Either is accepted. Types are a superset of Kinds (Types can return
+// Kinds) and are generally a richer thing to use, but Kinds are simpler
+// if you only need those.
+//
+// The reason DecodeHookFunc is multi-typed is for backwards compatibility:
+// we started with Kinds and then realized Types were the better solution,
+// but have a promise to not break backwards compat so we now support
+// both.
+type DecodeHookFunc interface{}
+
+type DecodeHookFuncType func(reflect.Type, reflect.Type, interface{}) (interface{}, error)
+type DecodeHookFuncKind func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error)
+
+// DecoderConfig is the configuration that is used to create a new decoder
+// and allows customization of various aspects of decoding.
+type DecoderConfig struct {
+	// DecodeHook, if set, will be called before any decoding and any
+	// type conversion (if WeaklyTypedInput is on). This lets you modify
+	// the values before they're set down onto the resulting struct.
+	//
+	// If an error is returned, the entire decode will fail with that
+	// error.
+	DecodeHook DecodeHookFunc
+
+	// If ErrorUnused is true, then it is an error for there to exist
+	// keys in the original map that were unused in the decoding process
+	// (extra keys).
+	ErrorUnused bool
+
+	// ZeroFields, if set to true, will zero fields before writing them.
+	// For example, a map will be emptied before decoded values are put in
+	// it. If this is false, a map will be merged.
+	ZeroFields bool
+
+	// If WeaklyTypedInput is true, the decoder will make the following
+	// "weak" conversions:
+	//
+	//   - bools to string (true = "1", false = "0")
+	//   - numbers to string (base 10)
+	//   - bools to int/uint (true = 1, false = 0)
+	//   - strings to int/uint (base implied by prefix)
+	//   - int to bool (true if value != 0)
+	//   - string to bool (accepts: 1, t, T, TRUE, true, True, 0, f, F,
+	//     FALSE, false, False. Anything else is an error)
+	//   - empty array = empty map and vice versa
+	//   - negative numbers to overflowed uint values (base 10)
+	//   - slice of maps to a merged map
+	//
+	WeaklyTypedInput bool
+
+	// Metadata is the struct that will contain extra metadata about
+	// the decoding. If this is nil, then no metadata will be tracked.
+	Metadata *Metadata
+
+	// Result is a pointer to the struct that will contain the decoded
+	// value.
+	Result interface{}
+
+	// The tag name that mapstructure reads for field names. This
+	// defaults to "mapstructure"
+	TagName string
+}
+
+// A Decoder takes a raw interface value and turns it into structured
+// data, keeping track of rich error information along the way in case
+// anything goes wrong. Unlike the basic top-level Decode method, you can
+// more finely control how the Decoder behaves using the DecoderConfig
+// structure. The top-level Decode method is just a convenience that sets
+// up the most basic Decoder.
+type Decoder struct {
+	config *DecoderConfig
+}
+
+// Metadata contains information about decoding a structure that
+// is tedious or difficult to get otherwise.
+type Metadata struct {
+	// Keys are the keys of the structure which were successfully decoded
+	Keys []string
+
+	// Unused is a slice of keys that were found in the raw value but
+	// weren't decoded since there was no matching field in the result interface
+	Unused []string
+}
+
+// Decode takes a map and uses reflection to convert it into the
+// given Go native structure. val must be a pointer to a struct.
+func Decode(m interface{}, rawVal interface{}) error {
+	config := &DecoderConfig{
+		Metadata: nil,
+		Result:   rawVal,
+	}
+
+	decoder, err := NewDecoder(config)
+	if err != nil {
+		return err
+	}
+
+	return decoder.Decode(m)
+}
+
+// WeakDecode is the same as Decode but is shorthand to enable
+// WeaklyTypedInput. See DecoderConfig for more info.
+func WeakDecode(input, output interface{}) error {
+	config := &DecoderConfig{
+		Metadata:         nil,
+		Result:           output,
+		WeaklyTypedInput: true,
+	}
+
+	decoder, err := NewDecoder(config)
+	if err != nil {
+		return err
+	}
+
+	return decoder.Decode(input)
+}
+
+// NewDecoder returns a new decoder for the given configuration. Once
+// a decoder has been returned, the same configuration must not be used
+// again.
+func NewDecoder(config *DecoderConfig) (*Decoder, error) {
+	val := reflect.ValueOf(config.Result)
+	if val.Kind() != reflect.Ptr {
+		return nil, errors.New("result must be a pointer")
+	}
+
+	val = val.Elem()
+	if !val.CanAddr() {
+		return nil, errors.New("result must be addressable (a pointer)")
+	}
+
+	if config.Metadata != nil {
+		if config.Metadata.Keys == nil {
+			config.Metadata.Keys = make([]string, 0)
+		}
+
+		if config.Metadata.Unused == nil {
+			config.Metadata.Unused = make([]string, 0)
+		}
+	}
+
+	if config.TagName == "" {
+		config.TagName = "mapstructure"
+	}
+
+	result := &Decoder{
+		config: config,
+	}
+
+	return result, nil
+}
+
+// Decode decodes the given raw interface to the target pointer specified
+// by the configuration.
+func (d *Decoder) Decode(raw interface{}) error {
+	return d.decode("", raw, reflect.ValueOf(d.config.Result).Elem())
+}
+
+// Decodes an unknown data type into a specific reflection value.
+func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error {
+	if data == nil {
+		// If the data is nil, then we don't set anything.
+		return nil
+	}
+
+	dataVal := reflect.ValueOf(data)
+	if !dataVal.IsValid() {
+		// If the data value is invalid, then we just set the value
+		// to be the zero value.
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	if d.config.DecodeHook != nil {
+		// We have a DecodeHook, so let's pre-process the data.
+		var err error
+		data, err = DecodeHookExec(
+			d.config.DecodeHook,
+			dataVal.Type(), val.Type(), data)
+		if err != nil {
+			return err
+		}
+	}
+
+	var err error
+	dataKind := getKind(val)
+	switch dataKind {
+	case reflect.Bool:
+		err = d.decodeBool(name, data, val)
+	case reflect.Interface:
+		err = d.decodeBasic(name, data, val)
+	case reflect.String:
+		err = d.decodeString(name, data, val)
+	case reflect.Int:
+		err = d.decodeInt(name, data, val)
+	case reflect.Uint:
+		err = d.decodeUint(name, data, val)
+	case reflect.Float32:
+		err = d.decodeFloat(name, data, val)
+	case reflect.Struct:
+		err = d.decodeStruct(name, data, val)
+	case reflect.Map:
+		err = d.decodeMap(name, data, val)
+	case reflect.Ptr:
+		err = d.decodePtr(name, data, val)
+	case reflect.Slice:
+		err = d.decodeSlice(name, data, val)
+	default:
+		// If we reached this point then we weren't able to decode it
+		return fmt.Errorf("%s: unsupported type: %s", name, dataKind)
+	}
+
+	// If we reached here, then we successfully decoded SOMETHING, so
+	// mark the key as used if we're tracking metadata.
+	if d.config.Metadata != nil && name != "" {
+		d.config.Metadata.Keys = append(d.config.Metadata.Keys, name)
+	}
+
+	return err
+}
+
+// This decodes a basic type (bool, int, string, etc.) and sets the
+// value to "data" of that type.
+func (d *Decoder) decodeBasic(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.ValueOf(data)
+	dataValType := dataVal.Type()
+	if !dataValType.AssignableTo(val.Type()) {
+		return fmt.Errorf(
+			"'%s' expected type '%s', got '%s'",
+			name, val.Type(), dataValType)
+	}
+
+	val.Set(dataVal)
+	return nil
+}
+
+func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.ValueOf(data)
+	dataKind := getKind(dataVal)
+
+	converted := true
+	switch {
+	case dataKind == reflect.String:
+		val.SetString(dataVal.String())
+	case dataKind == reflect.Bool && d.config.WeaklyTypedInput:
+		if dataVal.Bool() {
+			val.SetString("1")
+		} else {
+			val.SetString("0")
+		}
+	case dataKind == reflect.Int && d.config.WeaklyTypedInput:
+		val.SetString(strconv.FormatInt(dataVal.Int(), 10))
+	case dataKind == reflect.Uint && d.config.WeaklyTypedInput:
+		val.SetString(strconv.FormatUint(dataVal.Uint(), 10))
+	case dataKind == reflect.Float32 && d.config.WeaklyTypedInput:
+		val.SetString(strconv.FormatFloat(dataVal.Float(), 'f', -1, 64))
+	case dataKind == reflect.Slice && d.config.WeaklyTypedInput:
+		dataType := dataVal.Type()
+		elemKind := dataType.Elem().Kind()
+		switch {
+		case elemKind == reflect.Uint8:
+			val.SetString(string(dataVal.Interface().([]uint8)))
+		default:
+			converted = false
+		}
+	default:
+		converted = false
+	}
+
+	if !converted {
+		return fmt.Errorf(
+			"'%s' expected type '%s', got unconvertible type '%s'",
+			name, val.Type(), dataVal.Type())
+	}
+
+	return nil
+}
+
+func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.ValueOf(data)
+	dataKind := getKind(dataVal)
+
+	switch {
+	case dataKind == reflect.Int:
+		val.SetInt(dataVal.Int())
+	case dataKind == reflect.Uint:
+		val.SetInt(int64(dataVal.Uint()))
+	case dataKind == reflect.Float32:
+		val.SetInt(int64(dataVal.Float()))
+	case dataKind == reflect.Bool && d.config.WeaklyTypedInput:
+		if dataVal.Bool() {
+			val.SetInt(1)
+		} else {
+			val.SetInt(0)
+		}
+	case dataKind == reflect.String && d.config.WeaklyTypedInput:
+		i, err := strconv.ParseInt(dataVal.String(), 0, val.Type().Bits())
+		if err == nil {
+			val.SetInt(i)
+		} else {
+			return fmt.Errorf("cannot parse '%s' as int: %s", name, err)
+		}
+	default:
+		return fmt.Errorf(
+			"'%s' expected type '%s', got unconvertible type '%s'",
+			name, val.Type(), dataVal.Type())
+	}
+
+	return nil
+}
+
+func (d *Decoder) decodeUint(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.ValueOf(data)
+	dataKind := getKind(dataVal)
+
+	switch {
+	case dataKind == reflect.Int:
+		i := dataVal.Int()
+		if i < 0 && !d.config.WeaklyTypedInput {
+			return fmt.Errorf("cannot parse '%s', %d overflows uint",
+				name, i)
+		}
+		val.SetUint(uint64(i))
+	case dataKind == reflect.Uint:
+		val.SetUint(dataVal.Uint())
+	case dataKind == reflect.Float32:
+		f := dataVal.Float()
+		if f < 0 && !d.config.WeaklyTypedInput {
+			return fmt.Errorf("cannot parse '%s', %f overflows uint",
+				name, f)
+		}
+		val.SetUint(uint64(f))
+	case dataKind == reflect.Bool && d.config.WeaklyTypedInput:
+		if dataVal.Bool() {
+			val.SetUint(1)
+		} else {
+			val.SetUint(0)
+		}
+	case dataKind == reflect.String && d.config.WeaklyTypedInput:
+		i, err := strconv.ParseUint(dataVal.String(), 0, val.Type().Bits())
+		if err == nil {
+			val.SetUint(i)
+		} else {
+			return fmt.Errorf("cannot parse '%s' as uint: %s", name, err)
+		}
+	default:
+		return fmt.Errorf(
+			"'%s' expected type '%s', got unconvertible type '%s'",
+			name, val.Type(), dataVal.Type())
+	}
+
+	return nil
+}
+
+func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.ValueOf(data)
+	dataKind := getKind(dataVal)
+
+	switch {
+	case dataKind == reflect.Bool:
+		val.SetBool(dataVal.Bool())
+	case dataKind == reflect.Int && d.config.WeaklyTypedInput:
+		val.SetBool(dataVal.Int() != 0)
+	case dataKind == reflect.Uint && d.config.WeaklyTypedInput:
+		val.SetBool(dataVal.Uint() != 0)
+	case dataKind == reflect.Float32 && d.config.WeaklyTypedInput:
+		val.SetBool(dataVal.Float() != 0)
+	case dataKind == reflect.String && d.config.WeaklyTypedInput:
+		b, err := strconv.ParseBool(dataVal.String())
+		if err == nil {
+			val.SetBool(b)
+		} else if dataVal.String() == "" {
+			val.SetBool(false)
+		} else {
+			return fmt.Errorf("cannot parse '%s' as bool: %s", name, err)
+		}
+	default:
+		return fmt.Errorf(
+			"'%s' expected type '%s', got unconvertible type '%s'",
+			name, val.Type(), dataVal.Type())
+	}
+
+	return nil
+}
+
+func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.ValueOf(data)
+	dataKind := getKind(dataVal)
+
+	switch {
+	case dataKind == reflect.Int:
+		val.SetFloat(float64(dataVal.Int()))
+	case dataKind == reflect.Uint:
+		val.SetFloat(float64(dataVal.Uint()))
+	case dataKind == reflect.Float32:
+		val.SetFloat(float64(dataVal.Float()))
+	case dataKind == reflect.Bool && d.config.WeaklyTypedInput:
+		if dataVal.Bool() {
+			val.SetFloat(1)
+		} else {
+			val.SetFloat(0)
+		}
+	case dataKind == reflect.String && d.config.WeaklyTypedInput:
+		f, err := strconv.ParseFloat(dataVal.String(), val.Type().Bits())
+		if err == nil {
+			val.SetFloat(f)
+		} else {
+			return fmt.Errorf("cannot parse '%s' as float: %s", name, err)
+		}
+	default:
+		return fmt.Errorf(
+			"'%s' expected type '%s', got unconvertible type '%s'",
+			name, val.Type(), dataVal.Type())
+	}
+
+	return nil
+}
+
+func (d *Decoder) decodeMap(name string, data interface{}, val reflect.Value) error {
+	valType := val.Type()
+	valKeyType := valType.Key()
+	valElemType := valType.Elem()
+
+	// By default we overwrite keys in the current map
+	valMap := val
+
+	// If the map is nil or we're purposely zeroing fields, make a new map
+	if valMap.IsNil() || d.config.ZeroFields {
+		// Make a new map to hold our result
+		mapType := reflect.MapOf(valKeyType, valElemType)
+		valMap = reflect.MakeMap(mapType)
+	}
+
+	// Check input type
+	dataVal := reflect.Indirect(reflect.ValueOf(data))
+	if dataVal.Kind() != reflect.Map {
+		// In weak mode, we accept a slice of maps as an input...
+		if d.config.WeaklyTypedInput {
+			switch dataVal.Kind() {
+			case reflect.Array, reflect.Slice:
+				// Special case for BC reasons (covered by tests)
+				if dataVal.Len() == 0 {
+					val.Set(valMap)
+					return nil
+				}
+
+				for i := 0; i < dataVal.Len(); i++ {
+					err := d.decode(
+						fmt.Sprintf("%s[%d]", name, i),
+						dataVal.Index(i).Interface(), val)
+					if err != nil {
+						return err
+					}
+				}
+
+				return nil
+			}
+		}
+
+		return fmt.Errorf("'%s' expected a map, got '%s'", name, dataVal.Kind())
+	}
+
+	// Accumulate errors
+	errors := make([]string, 0)
+
+	for _, k := range dataVal.MapKeys() {
+		fieldName := fmt.Sprintf("%s[%s]", name, k)
+
+		// First decode the key into the proper type
+		currentKey := reflect.Indirect(reflect.New(valKeyType))
+		if err := d.decode(fieldName, k.Interface(), currentKey); err != nil {
+			errors = appendErrors(errors, err)
+			continue
+		}
+
+		// Next decode the data into the proper type
+		v := dataVal.MapIndex(k).Interface()
+		currentVal := reflect.Indirect(reflect.New(valElemType))
+		if err := d.decode(fieldName, v, currentVal); err != nil {
+			errors = appendErrors(errors, err)
+			continue
+		}
+
+		valMap.SetMapIndex(currentKey, currentVal)
+	}
+
+	// Set the built up map to the value
+	val.Set(valMap)
+
+	// If we had errors, return those
+	if len(errors) > 0 {
+		return &Error{errors}
+	}
+
+	return nil
+}
+
+func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) error {
+	// Create an element of the concrete (non pointer) type and decode
+	// into that. Then set the value of the pointer to this type.
+	valType := val.Type()
+	valElemType := valType.Elem()
+	realVal := reflect.New(valElemType)
+	if err := d.decode(name, data, reflect.Indirect(realVal)); err != nil {
+		return err
+	}
+
+	val.Set(realVal)
+	return nil
+}
+
+func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.Indirect(reflect.ValueOf(data))
+	dataValKind := dataVal.Kind()
+	valType := val.Type()
+	valElemType := valType.Elem()
+	sliceType := reflect.SliceOf(valElemType)
+
+	// Check input type
+	if dataValKind != reflect.Array && dataValKind != reflect.Slice {
+		// Accept empty map instead of array/slice in weakly typed mode
+		if d.config.WeaklyTypedInput && dataVal.Kind() == reflect.Map && dataVal.Len() == 0 {
+			val.Set(reflect.MakeSlice(sliceType, 0, 0))
+			return nil
+		} else {
+			return fmt.Errorf(
+				"'%s': source data must be an array or slice, got %s", name, dataValKind)
+		}
+	}
+
+	// Make a new slice to hold our result, same size as the original data.
+	valSlice := reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len())
+
+	// Accumulate any errors
+	errors := make([]string, 0)
+
+	for i := 0; i < dataVal.Len(); i++ {
+		currentData := dataVal.Index(i).Interface()
+		currentField := valSlice.Index(i)
+
+		fieldName := fmt.Sprintf("%s[%d]", name, i)
+		if err := d.decode(fieldName, currentData, currentField); err != nil {
+			errors = appendErrors(errors, err)
+		}
+	}
+
+	// Finally, set the value to the slice we built up
+	val.Set(valSlice)
+
+	// If there were errors, we return those
+	if len(errors) > 0 {
+		return &Error{errors}
+	}
+
+	return nil
+}
+
+func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value) error {
+	dataVal := reflect.Indirect(reflect.ValueOf(data))
+
+	// If the type of the value to write to and the data match directly,
+	// then we just set it directly instead of recursing into the structure.
+	if dataVal.Type() == val.Type() {
+		val.Set(dataVal)
+		return nil
+	}
+
+	dataValKind := dataVal.Kind()
+	if dataValKind != reflect.Map {
+		return fmt.Errorf("'%s' expected a map, got '%s'", name, dataValKind)
+	}
+
+	dataValType := dataVal.Type()
+	if kind := dataValType.Key().Kind(); kind != reflect.String && kind != reflect.Interface {
+		return fmt.Errorf(
+			"'%s' needs a map with string keys, has '%s' keys",
+			name, dataValType.Key().Kind())
+	}
+
+	dataValKeys := make(map[reflect.Value]struct{})
+	dataValKeysUnused := make(map[interface{}]struct{})
+	for _, dataValKey := range dataVal.MapKeys() {
+		dataValKeys[dataValKey] = struct{}{}
+		dataValKeysUnused[dataValKey.Interface()] = struct{}{}
+	}
+
+	errors := make([]string, 0)
+
+	// This slice will keep track of all the structs we'll be decoding.
+	// There can be more than one struct if there are embedded structs
+	// that are squashed.
+	structs := make([]reflect.Value, 1, 5)
+	structs[0] = val
+
+	// Compile the list of all the fields that we're going to be decoding
+	// from all the structs.
+	fields := make(map[*reflect.StructField]reflect.Value)
+	for len(structs) > 0 {
+		structVal := structs[0]
+		structs = structs[1:]
+
+		structType := structVal.Type()
+
+		for i := 0; i < structType.NumField(); i++ {
+			fieldType := structType.Field(i)
+			fieldKind := fieldType.Type.Kind()
+
+			if fieldType.Anonymous {
+				if fieldKind != reflect.Struct {
+					errors = appendErrors(errors,
+						fmt.Errorf("%s: unsupported type: %s", fieldType.Name, fieldKind))
+					continue
+				}
+			}
+
+			// If "squash" is specified in the tag, we squash the field down.
+			squash := false
+			tagParts := strings.Split(fieldType.Tag.Get(d.config.TagName), ",")
+			for _, tag := range tagParts[1:] {
+				if tag == "squash" {
+					squash = true
+					break
+				}
+			}
+
+			if squash {
+				if fieldKind != reflect.Struct {
+					errors = appendErrors(errors,
+						fmt.Errorf("%s: unsupported type for squash: %s", fieldType.Name, fieldKind))
+				} else {
+					structs = append(structs, val.FieldByName(fieldType.Name))
+				}
+				continue
+			}
+
+			// Normal struct field, store it away
+			fields[&fieldType] = structVal.Field(i)
+		}
+	}
+
+	for fieldType, field := range fields {
+		fieldName := fieldType.Name
+
+		tagValue := fieldType.Tag.Get(d.config.TagName)
+		tagValue = strings.SplitN(tagValue, ",", 2)[0]
+		if tagValue != "" {
+			fieldName = tagValue
+		}
+
+		rawMapKey := reflect.ValueOf(fieldName)
+		rawMapVal := dataVal.MapIndex(rawMapKey)
+		if !rawMapVal.IsValid() {
+			// Do a slower search by iterating over each key and
+			// doing case-insensitive search.
+			for dataValKey, _ := range dataValKeys {
+				mK, ok := dataValKey.Interface().(string)
+				if !ok {
+					// Not a string key
+					continue
+				}
+
+				if strings.EqualFold(mK, fieldName) {
+					rawMapKey = dataValKey
+					rawMapVal = dataVal.MapIndex(dataValKey)
+					break
+				}
+			}
+
+			if !rawMapVal.IsValid() {
+				// There was no matching key in the map for the value in
+				// the struct. Just ignore.
+				continue
+			}
+		}
+
+		// Delete the key we're using from the unused map so we stop tracking
+		delete(dataValKeysUnused, rawMapKey.Interface())
+
+		if !field.IsValid() {
+			// This should never happen
+			panic("field is not valid")
+		}
+
+		// If we can't set the field, then it is unexported or something,
+		// and we just continue onwards.
+		if !field.CanSet() {
+			continue
+		}
+
+		// If the name is empty string, then we're at the root, and we
+		// don't dot-join the fields.
+		if name != "" {
+			fieldName = fmt.Sprintf("%s.%s", name, fieldName)
+		}
+
+		if err := d.decode(fieldName, rawMapVal.Interface(), field); err != nil {
+			errors = appendErrors(errors, err)
+		}
+	}
+
+	if d.config.ErrorUnused && len(dataValKeysUnused) > 0 {
+		keys := make([]string, 0, len(dataValKeysUnused))
+		for rawKey, _ := range dataValKeysUnused {
+			keys = append(keys, rawKey.(string))
+		}
+		sort.Strings(keys)
+
+		err := fmt.Errorf("'%s' has invalid keys: %s", name, strings.Join(keys, ", "))
+		errors = appendErrors(errors, err)
+	}
+
+	if len(errors) > 0 {
+		return &Error{errors}
+	}
+
+	// Add the unused keys to the list of unused keys if we're tracking metadata
+	if d.config.Metadata != nil {
+		for rawKey, _ := range dataValKeysUnused {
+			key := rawKey.(string)
+			if name != "" {
+				key = fmt.Sprintf("%s.%s", name, key)
+			}
+
+			d.config.Metadata.Unused = append(d.config.Metadata.Unused, key)
+		}
+	}
+
+	return nil
+}
+
+func getKind(val reflect.Value) reflect.Kind {
+	kind := val.Kind()
+
+	switch {
+	case kind >= reflect.Int && kind <= reflect.Int64:
+		return reflect.Int
+	case kind >= reflect.Uint && kind <= reflect.Uint64:
+		return reflect.Uint
+	case kind >= reflect.Float32 && kind <= reflect.Float64:
+		return reflect.Float32
+	default:
+		return kind
+	}
+}
diff --git a/vendor/github.com/pkg/browser/LICENSE b/vendor/github.com/pkg/browser/LICENSE
new file mode 100644
index 0000000..65f78fb
--- /dev/null
+++ b/vendor/github.com/pkg/browser/LICENSE
@@ -0,0 +1,23 @@
+Copyright (c) 2014, Dave Cheney <dave@cheney.net>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/pkg/browser/README.md b/vendor/github.com/pkg/browser/README.md
new file mode 100644
index 0000000..72b1976
--- /dev/null
+++ b/vendor/github.com/pkg/browser/README.md
@@ -0,0 +1,55 @@
+
+# browser
+    import "github.com/pkg/browser"
+
+Package browser provides helpers to open files, readers, and urls in a browser window.
+
+The choice of which browser is started is entirely client dependant.
+
+
+
+
+
+## Variables
+``` go
+var Stderr io.Writer = os.Stderr
+```
+Stderr is the io.Writer to which executed commands write standard error.
+
+``` go
+var Stdout io.Writer = os.Stdout
+```
+Stdout is the io.Writer to which executed commands write standard output.
+
+
+## func OpenFile
+``` go
+func OpenFile(path string) error
+```
+OpenFile opens new browser window for the file path.
+
+
+## func OpenReader
+``` go
+func OpenReader(r io.Reader) error
+```
+OpenReader consumes the contents of r and presents the
+results in a new browser window.
+
+
+## func OpenURL
+``` go
+func OpenURL(url string) error
+```
+OpenURL opens a new browser window pointing to url.
+
+
+
+
+
+
+
+
+
+- - -
+Generated by [godoc2md](http://godoc.org/github.com/davecheney/godoc2md)
diff --git a/vendor/github.com/pkg/browser/browser.go b/vendor/github.com/pkg/browser/browser.go
new file mode 100644
index 0000000..d92c4cd
--- /dev/null
+++ b/vendor/github.com/pkg/browser/browser.go
@@ -0,0 +1,62 @@
+// Package browser provides helpers to open files, readers, and urls in a browser window.
+//
+// The choice of which browser is started is entirely client dependant.
+package browser
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+// Stdout is the io.Writer to which executed commands write standard output.
+var Stdout io.Writer = os.Stdout
+
+// Stderr is the io.Writer to which executed commands write standard error.
+var Stderr io.Writer = os.Stderr
+
+// OpenFile opens new browser window for the file path.
+func OpenFile(path string) error {
+	path, err := filepath.Abs(path)
+	if err != nil {
+		return err
+	}
+	return OpenURL("file://" + path)
+}
+
+// OpenReader consumes the contents of r and presents the
+// results in a new browser window.
+func OpenReader(r io.Reader) error {
+	f, err := ioutil.TempFile("", "browser")
+	if err != nil {
+		return fmt.Errorf("browser: could not create temporary file: %v", err)
+	}
+	if _, err := io.Copy(f, r); err != nil {
+		f.Close()
+		return fmt.Errorf("browser: caching temporary file failed: %v", err)
+	}
+	if err := f.Close(); err != nil {
+		return fmt.Errorf("browser: caching temporary file failed: %v", err)
+	}
+	oldname := f.Name()
+	newname := oldname + ".html"
+	if err := os.Rename(oldname, newname); err != nil {
+		return fmt.Errorf("browser: renaming temporary file failed: %v", err)
+	}
+	return OpenFile(newname)
+}
+
+// OpenURL opens a new browser window pointing to url.
+func OpenURL(url string) error {
+	return openBrowser(url)
+}
+
+func runCmd(prog string, args ...string) error {
+	cmd := exec.Command(prog, args...)
+	cmd.Stdout = Stdout
+	cmd.Stderr = Stderr
+	return cmd.Run()
+}
diff --git a/vendor/github.com/pkg/browser/browser_darwin.go b/vendor/github.com/pkg/browser/browser_darwin.go
new file mode 100644
index 0000000..8507cf7
--- /dev/null
+++ b/vendor/github.com/pkg/browser/browser_darwin.go
@@ -0,0 +1,5 @@
+package browser
+
+func openBrowser(url string) error {
+	return runCmd("open", url)
+}
diff --git a/vendor/github.com/pkg/browser/browser_linux.go b/vendor/github.com/pkg/browser/browser_linux.go
new file mode 100644
index 0000000..bed47dd
--- /dev/null
+++ b/vendor/github.com/pkg/browser/browser_linux.go
@@ -0,0 +1,5 @@
+package browser
+
+func openBrowser(url string) error {
+	return runCmd("xdg-open", url)
+}
diff --git a/vendor/github.com/pkg/browser/browser_unsupported.go b/vendor/github.com/pkg/browser/browser_unsupported.go
new file mode 100644
index 0000000..3bdc6ff
--- /dev/null
+++ b/vendor/github.com/pkg/browser/browser_unsupported.go
@@ -0,0 +1,12 @@
+// +build !linux,!windows,!darwin
+
+package browser
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func openBrowser(url string) error {
+	return fmt.Errorf("openBrowser: unsupported operating system: %v", runtime.GOOS)
+}
diff --git a/vendor/github.com/pkg/browser/browser_windows.go b/vendor/github.com/pkg/browser/browser_windows.go
new file mode 100644
index 0000000..f65e0ee
--- /dev/null
+++ b/vendor/github.com/pkg/browser/browser_windows.go
@@ -0,0 +1,10 @@
+package browser
+
+import (
+	"strings"
+)
+
+func openBrowser(url string) error {
+	r := strings.NewReplacer("&", "^&")
+	return runCmd("cmd", "/c", "start", r.Replace(url))
+}
diff --git a/vendor/github.com/pmezard/go-difflib/LICENSE b/vendor/github.com/pmezard/go-difflib/LICENSE
new file mode 100644
index 0000000..c67dad6
--- /dev/null
+++ b/vendor/github.com/pmezard/go-difflib/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2013, Patrick Mezard
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+    The names of its contributors may not be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/pmezard/go-difflib/difflib/difflib.go b/vendor/github.com/pmezard/go-difflib/difflib/difflib.go
new file mode 100644
index 0000000..64cc40f
--- /dev/null
+++ b/vendor/github.com/pmezard/go-difflib/difflib/difflib.go
@@ -0,0 +1,758 @@
+// Package difflib is a partial port of Python difflib module.
+//
+// It provides tools to compare sequences of strings and generate textual diffs.
+//
+// The following class and functions have been ported:
+//
+// - SequenceMatcher
+//
+// - unified_diff
+//
+// - context_diff
+//
+// Getting unified diffs was the main goal of the port. Keep in mind this code
+// is mostly suitable to output text differences in a human friendly way, there
+// are no guarantees generated diffs are consumable by patch(1).
+package difflib
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+)
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func calculateRatio(matches, length int) float64 {
+	if length > 0 {
+		return 2.0 * float64(matches) / float64(length)
+	}
+	return 1.0
+}
+
+type Match struct {
+	A    int
+	B    int
+	Size int
+}
+
+type OpCode struct {
+	Tag byte
+	I1  int
+	I2  int
+	J1  int
+	J2  int
+}
+
+// SequenceMatcher compares sequence of strings. The basic
+// algorithm predates, and is a little fancier than, an algorithm
+// published in the late 1980's by Ratcliff and Obershelp under the
+// hyperbolic name "gestalt pattern matching".  The basic idea is to find
+// the longest contiguous matching subsequence that contains no "junk"
+// elements (R-O doesn't address junk).  The same idea is then applied
+// recursively to the pieces of the sequences to the left and to the right
+// of the matching subsequence.  This does not yield minimal edit
+// sequences, but does tend to yield matches that "look right" to people.
+//
+// SequenceMatcher tries to compute a "human-friendly diff" between two
+// sequences.  Unlike e.g. UNIX(tm) diff, the fundamental notion is the
+// longest *contiguous* & junk-free matching subsequence.  That's what
+// catches peoples' eyes.  The Windows(tm) windiff has another interesting
+// notion, pairing up elements that appear uniquely in each sequence.
+// That, and the method here, appear to yield more intuitive difference
+// reports than does diff.  This method appears to be the least vulnerable
+// to synching up on blocks of "junk lines", though (like blank lines in
+// ordinary text files, or maybe "<P>" lines in HTML files).  That may be
+// because this is the only method of the 3 that has a *concept* of
+// "junk" <wink>.
+//
+// Timing:  Basic R-O is cubic time worst case and quadratic time expected
+// case.  SequenceMatcher is quadratic time for the worst case and has
+// expected-case behavior dependent in a complicated way on how many
+// elements the sequences have in common; best case time is linear.
+type SequenceMatcher struct {
+	a              []string
+	b              []string
+	b2j            map[string][]int
+	IsJunk         func(string) bool
+	autoJunk       bool
+	bJunk          map[string]struct{}
+	matchingBlocks []Match
+	fullBCount     map[string]int
+	bPopular       map[string]struct{}
+	opCodes        []OpCode
+}
+
+func NewMatcher(a, b []string) *SequenceMatcher {
+	m := SequenceMatcher{autoJunk: true}
+	m.SetSeqs(a, b)
+	return &m
+}
+
+func NewMatcherWithJunk(a, b []string, autoJunk bool,
+	isJunk func(string) bool) *SequenceMatcher {
+
+	m := SequenceMatcher{IsJunk: isJunk, autoJunk: autoJunk}
+	m.SetSeqs(a, b)
+	return &m
+}
+
+// Set two sequences to be compared.
+func (m *SequenceMatcher) SetSeqs(a, b []string) {
+	m.SetSeq1(a)
+	m.SetSeq2(b)
+}
+
+// Set the first sequence to be compared. The second sequence to be compared is
+// not changed.
+//
+// SequenceMatcher computes and caches detailed information about the second
+// sequence, so if you want to compare one sequence S against many sequences,
+// use .SetSeq2(s) once and call .SetSeq1(x) repeatedly for each of the other
+// sequences.
+//
+// See also SetSeqs() and SetSeq2().
+func (m *SequenceMatcher) SetSeq1(a []string) {
+	if &a == &m.a {
+		return
+	}
+	m.a = a
+	m.matchingBlocks = nil
+	m.opCodes = nil
+}
+
+// Set the second sequence to be compared. The first sequence to be compared is
+// not changed.
+func (m *SequenceMatcher) SetSeq2(b []string) {
+	if &b == &m.b {
+		return
+	}
+	m.b = b
+	m.matchingBlocks = nil
+	m.opCodes = nil
+	m.fullBCount = nil
+	m.chainB()
+}
+
+func (m *SequenceMatcher) chainB() {
+	// Populate line -> index mapping
+	b2j := map[string][]int{}
+	for i, s := range m.b {
+		indices := b2j[s]
+		indices = append(indices, i)
+		b2j[s] = indices
+	}
+
+	// Purge junk elements
+	m.bJunk = map[string]struct{}{}
+	if m.IsJunk != nil {
+		junk := m.bJunk
+		for s, _ := range b2j {
+			if m.IsJunk(s) {
+				junk[s] = struct{}{}
+			}
+		}
+		for s, _ := range junk {
+			delete(b2j, s)
+		}
+	}
+
+	// Purge remaining popular elements
+	popular := map[string]struct{}{}
+	n := len(m.b)
+	if m.autoJunk && n >= 200 {
+		ntest := n/100 + 1
+		for s, indices := range b2j {
+			if len(indices) > ntest {
+				popular[s] = struct{}{}
+			}
+		}
+		for s, _ := range popular {
+			delete(b2j, s)
+		}
+	}
+	m.bPopular = popular
+	m.b2j = b2j
+}
+
+func (m *SequenceMatcher) isBJunk(s string) bool {
+	_, ok := m.bJunk[s]
+	return ok
+}
+
+// Find longest matching block in a[alo:ahi] and b[blo:bhi].
+//
+// If IsJunk is not defined:
+//
+// Return (i,j,k) such that a[i:i+k] is equal to b[j:j+k], where
+//     alo <= i <= i+k <= ahi
+//     blo <= j <= j+k <= bhi
+// and for all (i',j',k') meeting those conditions,
+//     k >= k'
+//     i <= i'
+//     and if i == i', j <= j'
+//
+// In other words, of all maximal matching blocks, return one that
+// starts earliest in a, and of all those maximal matching blocks that
+// start earliest in a, return the one that starts earliest in b.
+//
+// If IsJunk is defined, first the longest matching block is
+// determined as above, but with the additional restriction that no
+// junk element appears in the block.  Then that block is extended as
+// far as possible by matching (only) junk elements on both sides.  So
+// the resulting block never matches on junk except as identical junk
+// happens to be adjacent to an "interesting" match.
+//
+// If no blocks match, return (alo, blo, 0).
+func (m *SequenceMatcher) findLongestMatch(alo, ahi, blo, bhi int) Match {
+	// CAUTION:  stripping common prefix or suffix would be incorrect.
+	// E.g.,
+	//    ab
+	//    acab
+	// Longest matching block is "ab", but if common prefix is
+	// stripped, it's "a" (tied with "b").  UNIX(tm) diff does so
+	// strip, so ends up claiming that ab is changed to acab by
+	// inserting "ca" in the middle.  That's minimal but unintuitive:
+	// "it's obvious" that someone inserted "ac" at the front.
+	// Windiff ends up at the same place as diff, but by pairing up
+	// the unique 'b's and then matching the first two 'a's.
+	besti, bestj, bestsize := alo, blo, 0
+
+	// find longest junk-free match
+	// during an iteration of the loop, j2len[j] = length of longest
+	// junk-free match ending with a[i-1] and b[j]
+	j2len := map[int]int{}
+	for i := alo; i != ahi; i++ {
+		// look at all instances of a[i] in b; note that because
+		// b2j has no junk keys, the loop is skipped if a[i] is junk
+		newj2len := map[int]int{}
+		for _, j := range m.b2j[m.a[i]] {
+			// a[i] matches b[j]
+			if j < blo {
+				continue
+			}
+			if j >= bhi {
+				break
+			}
+			k := j2len[j-1] + 1
+			newj2len[j] = k
+			if k > bestsize {
+				besti, bestj, bestsize = i-k+1, j-k+1, k
+			}
+		}
+		j2len = newj2len
+	}
+
+	// Extend the best by non-junk elements on each end.  In particular,
+	// "popular" non-junk elements aren't in b2j, which greatly speeds
+	// the inner loop above, but also means "the best" match so far
+	// doesn't contain any junk *or* popular non-junk elements.
+	for besti > alo && bestj > blo && !m.isBJunk(m.b[bestj-1]) &&
+		m.a[besti-1] == m.b[bestj-1] {
+		besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
+	}
+	for besti+bestsize < ahi && bestj+bestsize < bhi &&
+		!m.isBJunk(m.b[bestj+bestsize]) &&
+		m.a[besti+bestsize] == m.b[bestj+bestsize] {
+		bestsize += 1
+	}
+
+	// Now that we have a wholly interesting match (albeit possibly
+	// empty!), we may as well suck up the matching junk on each
+	// side of it too.  Can't think of a good reason not to, and it
+	// saves post-processing the (possibly considerable) expense of
+	// figuring out what to do with it.  In the case of an empty
+	// interesting match, this is clearly the right thing to do,
+	// because no other kind of match is possible in the regions.
+	for besti > alo && bestj > blo && m.isBJunk(m.b[bestj-1]) &&
+		m.a[besti-1] == m.b[bestj-1] {
+		besti, bestj, bestsize = besti-1, bestj-1, bestsize+1
+	}
+	for besti+bestsize < ahi && bestj+bestsize < bhi &&
+		m.isBJunk(m.b[bestj+bestsize]) &&
+		m.a[besti+bestsize] == m.b[bestj+bestsize] {
+		bestsize += 1
+	}
+
+	return Match{A: besti, B: bestj, Size: bestsize}
+}
+
+// Return list of triples describing matching subsequences.
+//
+// Each triple is of the form (i, j, n), and means that
+// a[i:i+n] == b[j:j+n].  The triples are monotonically increasing in
+// i and in j. It's also guaranteed that if (i, j, n) and (i', j', n') are
+// adjacent triples in the list, and the second is not the last triple in the
+// list, then i+n != i' or j+n != j'. IOW, adjacent triples never describe
+// adjacent equal blocks.
+//
+// The last triple is a dummy, (len(a), len(b), 0), and is the only
+// triple with n==0.
+func (m *SequenceMatcher) GetMatchingBlocks() []Match {
+	if m.matchingBlocks != nil {
+		return m.matchingBlocks
+	}
+
+	var matchBlocks func(alo, ahi, blo, bhi int, matched []Match) []Match
+	matchBlocks = func(alo, ahi, blo, bhi int, matched []Match) []Match {
+		match := m.findLongestMatch(alo, ahi, blo, bhi)
+		i, j, k := match.A, match.B, match.Size
+		if match.Size > 0 {
+			if alo < i && blo < j {
+				matched = matchBlocks(alo, i, blo, j, matched)
+			}
+			matched = append(matched, match)
+			if i+k < ahi && j+k < bhi {
+				matched = matchBlocks(i+k, ahi, j+k, bhi, matched)
+			}
+		}
+		return matched
+	}
+	matched := matchBlocks(0, len(m.a), 0, len(m.b), nil)
+
+	// It's possible that we have adjacent equal blocks in the
+	// matching_blocks list now.
+	nonAdjacent := []Match{}
+	i1, j1, k1 := 0, 0, 0
+	for _, b := range matched {
+		// Is this block adjacent to i1, j1, k1?
+		i2, j2, k2 := b.A, b.B, b.Size
+		if i1+k1 == i2 && j1+k1 == j2 {
+			// Yes, so collapse them -- this just increases the length of
+			// the first block by the length of the second, and the first
+			// block so lengthened remains the block to compare against.
+			k1 += k2
+		} else {
+			// Not adjacent.  Remember the first block (k1==0 means it's
+			// the dummy we started with), and make the second block the
+			// new block to compare against.
+			if k1 > 0 {
+				nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
+			}
+			i1, j1, k1 = i2, j2, k2
+		}
+	}
+	if k1 > 0 {
+		nonAdjacent = append(nonAdjacent, Match{i1, j1, k1})
+	}
+
+	nonAdjacent = append(nonAdjacent, Match{len(m.a), len(m.b), 0})
+	m.matchingBlocks = nonAdjacent
+	return m.matchingBlocks
+}
+
+// Return list of 5-tuples describing how to turn a into b.
+//
+// Each tuple is of the form (tag, i1, i2, j1, j2).  The first tuple
+// has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
+// tuple preceding it, and likewise for j1 == the previous j2.
+//
+// The tags are characters, with these meanings:
+//
+// 'r' (replace):  a[i1:i2] should be replaced by b[j1:j2]
+//
+// 'd' (delete):   a[i1:i2] should be deleted, j1==j2 in this case.
+//
+// 'i' (insert):   b[j1:j2] should be inserted at a[i1:i1], i1==i2 in this case.
+//
+// 'e' (equal):    a[i1:i2] == b[j1:j2]
+func (m *SequenceMatcher) GetOpCodes() []OpCode {
+	if m.opCodes != nil {
+		return m.opCodes
+	}
+	i, j := 0, 0
+	matching := m.GetMatchingBlocks()
+	opCodes := make([]OpCode, 0, len(matching))
+	for _, m := range matching {
+		//  invariant:  we've pumped out correct diffs to change
+		//  a[:i] into b[:j], and the next matching block is
+		//  a[ai:ai+size] == b[bj:bj+size]. So we need to pump
+		//  out a diff to change a[i:ai] into b[j:bj], pump out
+		//  the matching block, and move (i,j) beyond the match
+		ai, bj, size := m.A, m.B, m.Size
+		tag := byte(0)
+		if i < ai && j < bj {
+			tag = 'r'
+		} else if i < ai {
+			tag = 'd'
+		} else if j < bj {
+			tag = 'i'
+		}
+		if tag > 0 {
+			opCodes = append(opCodes, OpCode{tag, i, ai, j, bj})
+		}
+		i, j = ai+size, bj+size
+		// the list of matching blocks is terminated by a
+		// sentinel with size 0
+		if size > 0 {
+			opCodes = append(opCodes, OpCode{'e', ai, i, bj, j})
+		}
+	}
+	m.opCodes = opCodes
+	return m.opCodes
+}
+
+// Isolate change clusters by eliminating ranges with no changes.
+//
+// Return a generator of groups with up to n lines of context.
+// Each group is in the same format as returned by GetOpCodes().
+func (m *SequenceMatcher) GetGroupedOpCodes(n int) [][]OpCode {
+	if n < 0 {
+		n = 3
+	}
+	codes := m.GetOpCodes()
+	if len(codes) == 0 {
+		codes = []OpCode{OpCode{'e', 0, 1, 0, 1}}
+	}
+	// Fixup leading and trailing groups if they show no changes.
+	if codes[0].Tag == 'e' {
+		c := codes[0]
+		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+		codes[0] = OpCode{c.Tag, max(i1, i2-n), i2, max(j1, j2-n), j2}
+	}
+	if codes[len(codes)-1].Tag == 'e' {
+		c := codes[len(codes)-1]
+		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+		codes[len(codes)-1] = OpCode{c.Tag, i1, min(i2, i1+n), j1, min(j2, j1+n)}
+	}
+	nn := n + n
+	groups := [][]OpCode{}
+	group := []OpCode{}
+	for _, c := range codes {
+		i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+		// End the current group and start a new one whenever
+		// there is a large range with no changes.
+		if c.Tag == 'e' && i2-i1 > nn {
+			group = append(group, OpCode{c.Tag, i1, min(i2, i1+n),
+				j1, min(j2, j1+n)})
+			groups = append(groups, group)
+			group = []OpCode{}
+			i1, j1 = max(i1, i2-n), max(j1, j2-n)
+		}
+		group = append(group, OpCode{c.Tag, i1, i2, j1, j2})
+	}
+	if len(group) > 0 && !(len(group) == 1 && group[0].Tag == 'e') {
+		groups = append(groups, group)
+	}
+	return groups
+}
+
+// Return a measure of the sequences' similarity (float in [0,1]).
+//
+// Where T is the total number of elements in both sequences, and
+// M is the number of matches, this is 2.0*M / T.
+// Note that this is 1 if the sequences are identical, and 0 if
+// they have nothing in common.
+//
+// .Ratio() is expensive to compute if you haven't already computed
+// .GetMatchingBlocks() or .GetOpCodes(), in which case you may
+// want to try .QuickRatio() or .RealQuickRation() first to get an
+// upper bound.
+func (m *SequenceMatcher) Ratio() float64 {
+	matches := 0
+	for _, m := range m.GetMatchingBlocks() {
+		matches += m.Size
+	}
+	return calculateRatio(matches, len(m.a)+len(m.b))
+}
+
+// Return an upper bound on ratio() relatively quickly.
+//
+// This isn't defined beyond that it is an upper bound on .Ratio(), and
+// is faster to compute.
+func (m *SequenceMatcher) QuickRatio() float64 {
+	// viewing a and b as multisets, set matches to the cardinality
+	// of their intersection; this counts the number of matches
+	// without regard to order, so is clearly an upper bound
+	if m.fullBCount == nil {
+		m.fullBCount = map[string]int{}
+		for _, s := range m.b {
+			m.fullBCount[s] = m.fullBCount[s] + 1
+		}
+	}
+
+	// avail[x] is the number of times x appears in 'b' less the
+	// number of times we've seen it in 'a' so far ... kinda
+	avail := map[string]int{}
+	matches := 0
+	for _, s := range m.a {
+		n, ok := avail[s]
+		if !ok {
+			n = m.fullBCount[s]
+		}
+		avail[s] = n - 1
+		if n > 0 {
+			matches += 1
+		}
+	}
+	return calculateRatio(matches, len(m.a)+len(m.b))
+}
+
+// Return an upper bound on ratio() very quickly.
+//
+// This isn't defined beyond that it is an upper bound on .Ratio(), and
+// is faster to compute than either .Ratio() or .QuickRatio().
+func (m *SequenceMatcher) RealQuickRatio() float64 {
+	la, lb := len(m.a), len(m.b)
+	return calculateRatio(min(la, lb), la+lb)
+}
+
+// Convert range to the "ed" format
+func formatRangeUnified(start, stop int) string {
+	// Per the diff spec at http://www.unix.org/single_unix_specification/
+	beginning := start + 1 // lines start numbering with one
+	length := stop - start
+	if length == 1 {
+		return fmt.Sprintf("%d", beginning)
+	}
+	if length == 0 {
+		beginning -= 1 // empty ranges begin at line just before the range
+	}
+	return fmt.Sprintf("%d,%d", beginning, length)
+}
+
+// Unified diff parameters
+type UnifiedDiff struct {
+	A        []string // First sequence lines
+	FromFile string   // First file name
+	FromDate string   // First file time
+	B        []string // Second sequence lines
+	ToFile   string   // Second file name
+	ToDate   string   // Second file time
+	Eol      string   // Headers end of line, defaults to LF
+	Context  int      // Number of context lines
+}
+
+// Compare two sequences of lines; generate the delta as a unified diff.
+//
+// Unified diffs are a compact way of showing line changes and a few
+// lines of context.  The number of context lines is set by 'n' which
+// defaults to three.
+//
+// By default, the diff control lines (those with ---, +++, or @@) are
+// created with a trailing newline.  This is helpful so that inputs
+// created from file.readlines() result in diffs that are suitable for
+// file.writelines() since both the inputs and outputs have trailing
+// newlines.
+//
+// For inputs that do not have trailing newlines, set the lineterm
+// argument to "" so that the output will be uniformly newline free.
+//
+// The unidiff format normally has a header for filenames and modification
+// times.  Any or all of these may be specified using strings for
+// 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
+// The modification times are normally expressed in the ISO 8601 format.
+func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
+	buf := bufio.NewWriter(writer)
+	defer buf.Flush()
+	w := func(format string, args ...interface{}) error {
+		_, err := buf.WriteString(fmt.Sprintf(format, args...))
+		return err
+	}
+
+	if len(diff.Eol) == 0 {
+		diff.Eol = "\n"
+	}
+
+	started := false
+	m := NewMatcher(diff.A, diff.B)
+	for _, g := range m.GetGroupedOpCodes(diff.Context) {
+		if !started {
+			started = true
+			fromDate := ""
+			if len(diff.FromDate) > 0 {
+				fromDate = "\t" + diff.FromDate
+			}
+			toDate := ""
+			if len(diff.ToDate) > 0 {
+				toDate = "\t" + diff.ToDate
+			}
+			err := w("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
+			if err != nil {
+				return err
+			}
+			err = w("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
+			if err != nil {
+				return err
+			}
+		}
+		first, last := g[0], g[len(g)-1]
+		range1 := formatRangeUnified(first.I1, last.I2)
+		range2 := formatRangeUnified(first.J1, last.J2)
+		if err := w("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
+			return err
+		}
+		for _, c := range g {
+			i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
+			if c.Tag == 'e' {
+				for _, line := range diff.A[i1:i2] {
+					if err := w(" " + line); err != nil {
+						return err
+					}
+				}
+				continue
+			}
+			if c.Tag == 'r' || c.Tag == 'd' {
+				for _, line := range diff.A[i1:i2] {
+					if err := w("-" + line); err != nil {
+						return err
+					}
+				}
+			}
+			if c.Tag == 'r' || c.Tag == 'i' {
+				for _, line := range diff.B[j1:j2] {
+					if err := w("+" + line); err != nil {
+						return err
+					}
+				}
+			}
+		}
+	}
+	return nil
+}
+
+// Like WriteUnifiedDiff but returns the diff a string.
+func GetUnifiedDiffString(diff UnifiedDiff) (string, error) {
+	w := &bytes.Buffer{}
+	err := WriteUnifiedDiff(w, diff)
+	return string(w.Bytes()), err
+}
+
+// Convert range to the "ed" format.
+func formatRangeContext(start, stop int) string {
+	// Per the diff spec at http://www.unix.org/single_unix_specification/
+	beginning := start + 1 // lines start numbering with one
+	length := stop - start
+	if length == 0 {
+		beginning -= 1 // empty ranges begin at line just before the range
+	}
+	if length <= 1 {
+		return fmt.Sprintf("%d", beginning)
+	}
+	return fmt.Sprintf("%d,%d", beginning, beginning+length-1)
+}
+
+type ContextDiff UnifiedDiff
+
+// Compare two sequences of lines; generate the delta as a context diff.
+//
+// Context diffs are a compact way of showing line changes and a few
+// lines of context. The number of context lines is set by diff.Context
+// which defaults to three.
+//
+// By default, the diff control lines (those with *** or ---) are
+// created with a trailing newline.
+//
+// For inputs that do not have trailing newlines, set the diff.Eol
+// argument to "" so that the output will be uniformly newline free.
+//
+// The context diff format normally has a header for filenames and
+// modification times.  Any or all of these may be specified using
+// strings for diff.FromFile, diff.ToFile, diff.FromDate, diff.ToDate.
+// The modification times are normally expressed in the ISO 8601 format.
+// If not specified, the strings default to blanks.
+func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
+	buf := bufio.NewWriter(writer)
+	defer buf.Flush()
+	var diffErr error
+	w := func(format string, args ...interface{}) {
+		_, err := buf.WriteString(fmt.Sprintf(format, args...))
+		if diffErr == nil && err != nil {
+			diffErr = err
+		}
+	}
+
+	if len(diff.Eol) == 0 {
+		diff.Eol = "\n"
+	}
+
+	prefix := map[byte]string{
+		'i': "+ ",
+		'd': "- ",
+		'r': "! ",
+		'e': "  ",
+	}
+
+	started := false
+	m := NewMatcher(diff.A, diff.B)
+	for _, g := range m.GetGroupedOpCodes(diff.Context) {
+		if !started {
+			started = true
+			fromDate := ""
+			if len(diff.FromDate) > 0 {
+				fromDate = "\t" + diff.FromDate
+			}
+			toDate := ""
+			if len(diff.ToDate) > 0 {
+				toDate = "\t" + diff.ToDate
+			}
+			w("*** %s%s%s", diff.FromFile, fromDate, diff.Eol)
+			w("--- %s%s%s", diff.ToFile, toDate, diff.Eol)
+		}
+
+		first, last := g[0], g[len(g)-1]
+		w("***************" + diff.Eol)
+
+		range1 := formatRangeContext(first.I1, last.I2)
+		w("*** %s ****%s", range1, diff.Eol)
+		for _, c := range g {
+			if c.Tag == 'r' || c.Tag == 'd' {
+				for _, cc := range g {
+					if cc.Tag == 'i' {
+						continue
+					}
+					for _, line := range diff.A[cc.I1:cc.I2] {
+						w(prefix[cc.Tag] + line)
+					}
+				}
+				break
+			}
+		}
+
+		range2 := formatRangeContext(first.J1, last.J2)
+		w("--- %s ----%s", range2, diff.Eol)
+		for _, c := range g {
+			if c.Tag == 'r' || c.Tag == 'i' {
+				for _, cc := range g {
+					if cc.Tag == 'd' {
+						continue
+					}
+					for _, line := range diff.B[cc.J1:cc.J2] {
+						w(prefix[cc.Tag] + line)
+					}
+				}
+				break
+			}
+		}
+	}
+	return diffErr
+}
+
+// Like WriteContextDiff but returns the diff a string.
+func GetContextDiffString(diff ContextDiff) (string, error) {
+	w := &bytes.Buffer{}
+	err := WriteContextDiff(w, diff)
+	return string(w.Bytes()), err
+}
+
+// Split a string on "\n" while preserving them. The output can be used
+// as input for UnifiedDiff and ContextDiff structures.
+func SplitLines(s string) []string {
+	lines := strings.SplitAfter(s, "\n")
+	lines[len(lines)-1] += "\n"
+	return lines
+}
diff --git a/vendor/github.com/spf13/cast/LICENSE b/vendor/github.com/spf13/cast/LICENSE
new file mode 100644
index 0000000..4527efb
--- /dev/null
+++ b/vendor/github.com/spf13/cast/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Steve Francia
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/vendor/github.com/spf13/cast/README.md b/vendor/github.com/spf13/cast/README.md
new file mode 100644
index 0000000..af7a1fd
--- /dev/null
+++ b/vendor/github.com/spf13/cast/README.md
@@ -0,0 +1,72 @@
+cast
+====
+
+Easy and safe casting from one type to another in Go
+
+Don’t Panic! ... Cast
+
+## What is Cast?
+
+Cast is a library to convert between different go types in a consistent and easy way.
+
+Cast provides simple functions to easily convert a number to a string, an
+interface into a bool, etc. Cast does this intelligently when an obvious
+conversion is possible. It doesn’t make any attempts to guess what you meant,
+for example you can only convert a string to an int when it is a string
+representation of an int such as “8”. Cast was developed for use in
+[Hugo](http://hugo.spf13.com), a website engine which uses YAML, TOML or JSON
+for meta data.
+
+## Why use Cast?
+
+When working with dynamic data in Go you often need to cast or convert the data
+from one type into another. Cast goes beyond just using type assertion (though
+it uses that when possible) to provide a very straightforward and convenient
+library.
+
+If you are working with interfaces to handle things like dynamic content
+you’ll need an easy way to convert an interface into a given type. This
+is the library for you.
+
+If you are taking in data from YAML, TOML or JSON or other formats which lack
+full types, then Cast is the library for you.
+
+## Usage
+
+Cast provides a handful of To_____ methods. These methods will always return
+the desired type. **If input is provided that will not convert to that type, the
+0 or nil value for that type will be returned**.
+
+Cast also provides identical methods To_____E. These return the same result as
+the To_____ methods, plus an additional error which tells you if it successfully
+converted. Using these methods you can tell the difference between when the
+input matched the zero value or when the conversion failed and the zero value
+was returned.
+
+The following examples are merely a sample of what is available. Please review
+the code for a complete set.
+
+### Example ‘ToString’:
+
+    cast.ToString("mayonegg")         // "mayonegg"
+    cast.ToString(8)                  // "8"
+    cast.ToString(8.31)               // "8.31"
+    cast.ToString([]byte("one time")) // "one time"
+    cast.ToString(nil)                // ""
+
+	var foo interface{} = "one more time"
+    cast.ToString(foo)                // "one more time"
+
+
+### Example ‘ToInt’:
+
+    cast.ToInt(8)                  // 8
+    cast.ToInt(8.31)               // 8
+    cast.ToInt("8")                // 8
+    cast.ToInt(true)               // 1
+    cast.ToInt(false)              // 0
+
+	var eight interface{} = 8
+    cast.ToInt(eight)              // 8
+    cast.ToInt(nil)                // 0
+
diff --git a/vendor/github.com/spf13/cast/cast.go b/vendor/github.com/spf13/cast/cast.go
new file mode 100644
index 0000000..de5a686
--- /dev/null
+++ b/vendor/github.com/spf13/cast/cast.go
@@ -0,0 +1,78 @@
+// Copyright © 2014 Steve Francia <spf@spf13.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+package cast
+
+import "time"
+
+func ToBool(i interface{}) bool {
+	v, _ := ToBoolE(i)
+	return v
+}
+
+func ToTime(i interface{}) time.Time {
+	v, _ := ToTimeE(i)
+	return v
+}
+
+func ToDuration(i interface{}) time.Duration {
+	v, _ := ToDurationE(i)
+	return v
+}
+
+func ToFloat64(i interface{}) float64 {
+	v, _ := ToFloat64E(i)
+	return v
+}
+
+func ToInt64(i interface{}) int64 {
+	v, _ := ToInt64E(i)
+	return v
+}
+
+func ToInt(i interface{}) int {
+	v, _ := ToIntE(i)
+	return v
+}
+
+func ToString(i interface{}) string {
+	v, _ := ToStringE(i)
+	return v
+}
+
+func ToStringMapString(i interface{}) map[string]string {
+	v, _ := ToStringMapStringE(i)
+	return v
+}
+
+func ToStringMapStringSlice(i interface{}) map[string][]string {
+	v, _ := ToStringMapStringSliceE(i)
+	return v
+}
+
+func ToStringMapBool(i interface{}) map[string]bool {
+	v, _ := ToStringMapBoolE(i)
+	return v
+}
+
+func ToStringMap(i interface{}) map[string]interface{} {
+	v, _ := ToStringMapE(i)
+	return v
+}
+
+func ToSlice(i interface{}) []interface{} {
+	v, _ := ToSliceE(i)
+	return v
+}
+
+func ToStringSlice(i interface{}) []string {
+	v, _ := ToStringSliceE(i)
+	return v
+}
+
+func ToIntSlice(i interface{}) []int {
+	v, _ := ToIntSliceE(i)
+	return v
+}
diff --git a/vendor/github.com/spf13/cast/caste.go b/vendor/github.com/spf13/cast/caste.go
new file mode 100644
index 0000000..2377896
--- /dev/null
+++ b/vendor/github.com/spf13/cast/caste.go
@@ -0,0 +1,500 @@
+// Copyright © 2014 Steve Francia <spf@spf13.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+package cast
+
+import (
+	"fmt"
+	"html/template"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+
+	jww "github.com/spf13/jwalterweatherman"
+)
+
+// ToTimeE casts an empty interface to time.Time.
+func ToTimeE(i interface{}) (tim time.Time, err error) {
+	i = indirect(i)
+	jww.DEBUG.Println("ToTimeE called on type:", reflect.TypeOf(i))
+
+	switch s := i.(type) {
+	case time.Time:
+		return s, nil
+	case string:
+		d, e := StringToDate(s)
+		if e == nil {
+			return d, nil
+		}
+		return time.Time{}, fmt.Errorf("Could not parse Date/Time format: %v\n", e)
+	default:
+		return time.Time{}, fmt.Errorf("Unable to Cast %#v to Time\n", i)
+	}
+}
+
+// ToDurationE casts an empty interface to time.Duration.
+func ToDurationE(i interface{}) (d time.Duration, err error) {
+	i = indirect(i)
+	jww.DEBUG.Println("ToDurationE called on type:", reflect.TypeOf(i))
+
+	switch s := i.(type) {
+	case time.Duration:
+		return s, nil
+	case int64:
+		d = time.Duration(s)
+		return
+	case float64:
+		d = time.Duration(s)
+		return
+	case string:
+		d, err = time.ParseDuration(s)
+		return
+	default:
+		err = fmt.Errorf("Unable to Cast %#v to Duration\n", i)
+		return
+	}
+}
+
+// ToBoolE casts an empty interface to a bool.
+func ToBoolE(i interface{}) (bool, error) {
+	i = indirect(i)
+	jww.DEBUG.Println("ToBoolE called on type:", reflect.TypeOf(i))
+
+	switch b := i.(type) {
+	case bool:
+		return b, nil
+	case nil:
+		return false, nil
+	case int:
+		if i.(int) != 0 {
+			return true, nil
+		}
+		return false, nil
+	case string:
+		return strconv.ParseBool(i.(string))
+	default:
+		return false, fmt.Errorf("Unable to Cast %#v to bool", i)
+	}
+}
+
+// ToFloat64E casts an empty interface to a float64.
+func ToFloat64E(i interface{}) (float64, error) {
+	i = indirect(i)
+	jww.DEBUG.Println("ToFloat64E called on type:", reflect.TypeOf(i))
+
+	switch s := i.(type) {
+	case float64:
+		return s, nil
+	case float32:
+		return float64(s), nil
+	case int64:
+		return float64(s), nil
+	case int32:
+		return float64(s), nil
+	case int16:
+		return float64(s), nil
+	case int8:
+		return float64(s), nil
+	case int:
+		return float64(s), nil
+	case string:
+		v, err := strconv.ParseFloat(s, 64)
+		if err == nil {
+			return float64(v), nil
+		}
+		return 0.0, fmt.Errorf("Unable to Cast %#v to float", i)
+	default:
+		return 0.0, fmt.Errorf("Unable to Cast %#v to float", i)
+	}
+}
+
+// ToInt64E casts an empty interface to an int64.
+func ToInt64E(i interface{}) (int64, error) {
+	i = indirect(i)
+	jww.DEBUG.Println("ToInt64E called on type:", reflect.TypeOf(i))
+
+	switch s := i.(type) {
+	case int64:
+		return s, nil
+	case int:
+		return int64(s), nil
+	case int32:
+		return int64(s), nil
+	case int16:
+		return int64(s), nil
+	case int8:
+		return int64(s), nil
+	case string:
+		v, err := strconv.ParseInt(s, 0, 0)
+		if err == nil {
+			return v, nil
+		}
+		return 0, fmt.Errorf("Unable to Cast %#v to int64", i)
+	case float64:
+		return int64(s), nil
+	case bool:
+		if bool(s) {
+			return int64(1), nil
+		}
+		return int64(0), nil
+	case nil:
+		return int64(0), nil
+	default:
+		return int64(0), fmt.Errorf("Unable to Cast %#v to int64", i)
+	}
+}
+
+// ToIntE casts an empty interface to an int.
+func ToIntE(i interface{}) (int, error) {
+	i = indirect(i)
+	jww.DEBUG.Println("ToIntE called on type:", reflect.TypeOf(i))
+
+	switch s := i.(type) {
+	case int:
+		return s, nil
+	case int64:
+		return int(s), nil
+	case int32:
+		return int(s), nil
+	case int16:
+		return int(s), nil
+	case int8:
+		return int(s), nil
+	case string:
+		v, err := strconv.ParseInt(s, 0, 0)
+		if err == nil {
+			return int(v), nil
+		}
+		return 0, fmt.Errorf("Unable to Cast %#v to int", i)
+	case float64:
+		return int(s), nil
+	case bool:
+		if bool(s) {
+			return 1, nil
+		}
+		return 0, nil
+	case nil:
+		return 0, nil
+	default:
+		return 0, fmt.Errorf("Unable to Cast %#v to int", i)
+	}
+}
+
+// From html/template/content.go
+// Copyright 2011 The Go Authors. All rights reserved.
+// indirect returns the value, after dereferencing as many times
+// as necessary to reach the base type (or nil).
+func indirect(a interface{}) interface{} {
+	if a == nil {
+		return nil
+	}
+	if t := reflect.TypeOf(a); t.Kind() != reflect.Ptr {
+		// Avoid creating a reflect.Value if it's not a pointer.
+		return a
+	}
+	v := reflect.ValueOf(a)
+	for v.Kind() == reflect.Ptr && !v.IsNil() {
+		v = v.Elem()
+	}
+	return v.Interface()
+}
+
+// From html/template/content.go
+// Copyright 2011 The Go Authors. All rights reserved.
+// indirectToStringerOrError returns the value, after dereferencing as many times
+// as necessary to reach the base type (or nil) or an implementation of fmt.Stringer
+// or error,
+func indirectToStringerOrError(a interface{}) interface{} {
+	if a == nil {
+		return nil
+	}
+
+	var errorType = reflect.TypeOf((*error)(nil)).Elem()
+	var fmtStringerType = reflect.TypeOf((*fmt.Stringer)(nil)).Elem()
+
+	v := reflect.ValueOf(a)
+	for !v.Type().Implements(fmtStringerType) && !v.Type().Implements(errorType) && v.Kind() == reflect.Ptr && !v.IsNil() {
+		v = v.Elem()
+	}
+	return v.Interface()
+}
+
+// ToStringE casts an empty interface to a string.
+func ToStringE(i interface{}) (string, error) {
+	i = indirectToStringerOrError(i)
+	jww.DEBUG.Println("ToStringE called on type:", reflect.TypeOf(i))
+
+	switch s := i.(type) {
+	case string:
+		return s, nil
+	case bool:
+		return strconv.FormatBool(s), nil
+	case float64:
+		return strconv.FormatFloat(i.(float64), 'f', -1, 64), nil
+	case int64:
+		return strconv.FormatInt(i.(int64), 10), nil
+	case int:
+		return strconv.FormatInt(int64(i.(int)), 10), nil
+	case []byte:
+		return string(s), nil
+	case template.HTML:
+		return string(s), nil
+	case template.URL:
+		return string(s), nil
+	case template.JS:
+		return string(s), nil
+	case template.CSS:
+		return string(s), nil
+	case template.HTMLAttr:
+		return string(s), nil
+	case nil:
+		return "", nil
+	case fmt.Stringer:
+		return s.String(), nil
+	case error:
+		return s.Error(), nil
+	default:
+		return "", fmt.Errorf("Unable to Cast %#v to string", i)
+	}
+}
+
+// ToStringMapStringE casts an empty interface to a map[string]string.
+func ToStringMapStringE(i interface{}) (map[string]string, error) {
+	jww.DEBUG.Println("ToStringMapStringE called on type:", reflect.TypeOf(i))
+
+	var m = map[string]string{}
+
+	switch v := i.(type) {
+	case map[string]string:
+		return v, nil
+	case map[string]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = ToString(val)
+		}
+		return m, nil
+	case map[interface{}]string:
+		for k, val := range v {
+			m[ToString(k)] = ToString(val)
+		}
+		return m, nil
+	case map[interface{}]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = ToString(val)
+		}
+		return m, nil
+	default:
+		return m, fmt.Errorf("Unable to Cast %#v to map[string]string", i)
+	}
+}
+
+// ToStringMapStringSliceE casts an empty interface to a map[string][]string.
+func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) {
+	jww.DEBUG.Println("ToStringMapStringSliceE called on type:", reflect.TypeOf(i))
+
+	var m = map[string][]string{}
+
+	switch v := i.(type) {
+	case map[string][]string:
+		return v, nil
+	case map[string][]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = ToStringSlice(val)
+		}
+		return m, nil
+	case map[string]string:
+		for k, val := range v {
+			m[ToString(k)] = []string{val}
+		}
+	case map[string]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = []string{ToString(val)}
+		}
+		return m, nil
+	case map[interface{}][]string:
+		for k, val := range v {
+			m[ToString(k)] = ToStringSlice(val)
+		}
+		return m, nil
+	case map[interface{}]string:
+		for k, val := range v {
+			m[ToString(k)] = ToStringSlice(val)
+		}
+		return m, nil
+	case map[interface{}][]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = ToStringSlice(val)
+		}
+		return m, nil
+	case map[interface{}]interface{}:
+		for k, val := range v {
+			key, err := ToStringE(k)
+			if err != nil {
+				return m, fmt.Errorf("Unable to Cast %#v to map[string][]string", i)
+			}
+			value, err := ToStringSliceE(val)
+			if err != nil {
+				return m, fmt.Errorf("Unable to Cast %#v to map[string][]string", i)
+			}
+			m[key] = value
+		}
+	default:
+		return m, fmt.Errorf("Unable to Cast %#v to map[string][]string", i)
+	}
+	return m, nil
+}
+
+// ToStringMapBoolE casts an empty interface to a map[string]bool.
+func ToStringMapBoolE(i interface{}) (map[string]bool, error) {
+	jww.DEBUG.Println("ToStringMapBoolE called on type:", reflect.TypeOf(i))
+
+	var m = map[string]bool{}
+
+	switch v := i.(type) {
+	case map[interface{}]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = ToBool(val)
+		}
+		return m, nil
+	case map[string]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = ToBool(val)
+		}
+		return m, nil
+	case map[string]bool:
+		return v, nil
+	default:
+		return m, fmt.Errorf("Unable to Cast %#v to map[string]bool", i)
+	}
+}
+
+// ToStringMapE casts an empty interface to a map[string]interface{}.
+func ToStringMapE(i interface{}) (map[string]interface{}, error) {
+	jww.DEBUG.Println("ToStringMapE called on type:", reflect.TypeOf(i))
+
+	var m = map[string]interface{}{}
+
+	switch v := i.(type) {
+	case map[interface{}]interface{}:
+		for k, val := range v {
+			m[ToString(k)] = val
+		}
+		return m, nil
+	case map[string]interface{}:
+		return v, nil
+	default:
+		return m, fmt.Errorf("Unable to Cast %#v to map[string]interface{}", i)
+	}
+}
+
+// ToSliceE casts an empty interface to a []interface{}.
+func ToSliceE(i interface{}) ([]interface{}, error) {
+	jww.DEBUG.Println("ToSliceE called on type:", reflect.TypeOf(i))
+
+	var s []interface{}
+
+	switch v := i.(type) {
+	case []interface{}:
+		for _, u := range v {
+			s = append(s, u)
+		}
+		return s, nil
+	case []map[string]interface{}:
+		for _, u := range v {
+			s = append(s, u)
+		}
+		return s, nil
+	default:
+		return s, fmt.Errorf("Unable to Cast %#v of type %v to []interface{}", i, reflect.TypeOf(i))
+	}
+}
+
+// ToStringSliceE casts an empty interface to a []string.
+func ToStringSliceE(i interface{}) ([]string, error) {
+	jww.DEBUG.Println("ToStringSliceE called on type:", reflect.TypeOf(i))
+
+	var a []string
+
+	switch v := i.(type) {
+	case []interface{}:
+		for _, u := range v {
+			a = append(a, ToString(u))
+		}
+		return a, nil
+	case []string:
+		return v, nil
+	case string:
+		return strings.Fields(v), nil
+	case interface{}:
+		str, err := ToStringE(v)
+		if err != nil {
+			return a, fmt.Errorf("Unable to Cast %#v to []string", i)
+		}
+		return []string{str}, nil
+	default:
+		return a, fmt.Errorf("Unable to Cast %#v to []string", i)
+	}
+}
+
+// ToIntSliceE casts an empty interface to a []int.
+func ToIntSliceE(i interface{}) ([]int, error) {
+	jww.DEBUG.Println("ToIntSliceE called on type:", reflect.TypeOf(i))
+
+	if i == nil {
+		return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i)
+	}
+
+	switch v := i.(type) {
+	case []int:
+		return v, nil
+	}
+
+	kind := reflect.TypeOf(i).Kind()
+	switch kind {
+	case reflect.Slice, reflect.Array:
+		s := reflect.ValueOf(i)
+		a := make([]int, s.Len())
+		for j := 0; j < s.Len(); j++ {
+			val, err := ToIntE(s.Index(j).Interface())
+			if err != nil {
+				return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i)
+			}
+			a[j] = val
+		}
+		return a, nil
+	default:
+		return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i)
+	}
+}
+
+// StringToDate casts an empty interface to a time.Time.
+func StringToDate(s string) (time.Time, error) {
+	return parseDateWith(s, []string{
+		time.RFC3339,
+		"2006-01-02T15:04:05", // iso8601 without timezone
+		time.RFC1123Z,
+		time.RFC1123,
+		time.RFC822Z,
+		time.RFC822,
+		time.ANSIC,
+		time.UnixDate,
+		time.RubyDate,
+		"2006-01-02 15:04:05Z07:00",
+		"02 Jan 06 15:04 MST",
+		"2006-01-02",
+		"02 Jan 2006",
+		"2006-01-02 15:04:05 -07:00",
+		"2006-01-02 15:04:05 -0700",
+	})
+}
+
+func parseDateWith(s string, dates []string) (d time.Time, e error) {
+	for _, dateType := range dates {
+		if d, e = time.Parse(dateType, s); e == nil {
+			return
+		}
+	}
+	return d, fmt.Errorf("Unable to parse date: %s", s)
+}
diff --git a/vendor/github.com/spf13/jwalterweatherman/LICENSE b/vendor/github.com/spf13/jwalterweatherman/LICENSE
new file mode 100644
index 0000000..4527efb
--- /dev/null
+++ b/vendor/github.com/spf13/jwalterweatherman/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Steve Francia
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/vendor/github.com/spf13/jwalterweatherman/README.md b/vendor/github.com/spf13/jwalterweatherman/README.md
new file mode 100644
index 0000000..c6f327c
--- /dev/null
+++ b/vendor/github.com/spf13/jwalterweatherman/README.md
@@ -0,0 +1,161 @@
+jWalterWeatherman
+=================
+
+Seamless printing to the terminal (stdout) and logging to a io.Writer
+(file) that’s as easy to use as fmt.Println.
+
+![and_that__s_why_you_always_leave_a_note_by_jonnyetc-d57q7um](https://cloud.githubusercontent.com/assets/173412/11002937/ccd01654-847d-11e5-828e-12ebaf582eaf.jpg)
+Graphic by [JonnyEtc](http://jonnyetc.deviantart.com/art/And-That-s-Why-You-Always-Leave-a-Note-315311422)
+
+JWW is primarily a wrapper around the excellent standard log library. It
+provides a few advantages over using the standard log library alone.
+
+1. Ready to go out of the box. 
+2. One library for both printing to the terminal and logging (to files).
+3. Really easy to log to either a temp file or a file you specify.
+
+
+I really wanted a very straightforward library that could seamlessly do
+the following things.
+
+1. Replace all the println, printf, etc statements thought my code with
+   something more useful
+2. Allow the user to easily control what levels are printed to stdout
+3. Allow the user to easily control what levels are logged
+4. Provide an easy mechanism (like fmt.Println) to print info to the user
+   which can be easily logged as well 
+5. Due to 2 & 3 provide easy verbose mode for output and logs
+6. Not have any unnecessary initialization cruft. Just use it.
+
+# Usage
+
+## Step 1. Use it
+Put calls throughout your source based on type of feedback.
+No initialization or setup needs to happen. Just start calling things.
+
+Available Loggers are:
+
+ * TRACE
+ * DEBUG
+ * INFO
+ * WARN
+ * ERROR
+ * CRITICAL
+ * FATAL
+
+These each are loggers based on the log standard library and follow the
+standard usage. Eg..
+
+```go
+    import (
+        jww "github.com/spf13/jwalterweatherman"
+    )
+
+    ...
+
+    if err != nil {
+
+        // This is a pretty serious error and the user should know about
+        // it. It will be printed to the terminal as well as logged under the
+        // default thresholds.
+
+        jww.ERROR.Println(err)
+    }
+
+    if err2 != nil {
+        // This error isn’t going to materially change the behavior of the
+        // application, but it’s something that may not be what the user
+        // expects. Under the default thresholds, Warn will be logged, but
+        // not printed to the terminal. 
+
+        jww.WARN.Println(err2)
+    }
+
+    // Information that’s relevant to what’s happening, but not very
+    // important for the user. Under the default thresholds this will be
+    // discarded.
+
+    jww.INFO.Printf("information %q", response)
+
+```
+
+_Why 7 levels?_
+
+Maybe you think that 7 levels are too much for any application... and you
+are probably correct. Just because there are seven levels doesn’t mean
+that you should be using all 7 levels. Pick the right set for your needs.
+Remember they only have to mean something to your project.
+
+## Step 2. Optionally configure JWW
+
+Under the default thresholds :
+
+ * Debug, Trace & Info goto /dev/null
+ * Warn and above is logged (when a log file/io.Writer is provided)
+ * Error and above is printed to the terminal (stdout)
+
+### Changing the thresholds
+
+The threshold can be changed at any time, but will only affect calls that
+execute after the change was made.
+
+This is very useful if your application has a verbose mode. Of course you
+can decide what verbose means to you or even have multiple levels of
+verbosity.
+
+
+```go
+    import (
+        jww "github.com/spf13/jwalterweatherman"
+    )
+
+    if Verbose {
+        jww.SetLogThreshold(jww.LevelTrace)
+        jww.SetStdoutThreshold(jww.LevelInfo)
+    }
+```
+
+Note that JWW's own internal output uses log levels as well, so set the log
+level before making any other calls if you want to see what it's up to.
+
+### Using a temp log file
+
+JWW conveniently creates a temporary file and sets the log Handle to
+a io.Writer created for it. You should call this early in your application
+initialization routine as it will only log calls made after it is executed. 
+When this option is used, the library will fmt.Println where to find the
+log file.
+
+```go
+    import (
+        jww "github.com/spf13/jwalterweatherman"
+    )
+
+    jww.UseTempLogFile("YourAppName") 
+
+```
+
+### Setting a log file
+
+JWW can log to any file you provide a path to (provided it’s writable).
+Will only append to this file.
+
+
+```go
+    import (
+        jww "github.com/spf13/jwalterweatherman"
+    )
+
+    jww.SetLogFile("/path/to/logfile") 
+
+```
+
+
+# More information
+
+This is an early release. I’ve been using it for a while and this is the
+third interface I’ve tried. I like this one pretty well, but no guarantees
+that it won’t change a bit.
+
+I wrote this for use in [hugo](http://hugo.spf13.com). If you are looking
+for a static website engine that’s super fast please checkout Hugo.
diff --git a/vendor/github.com/spf13/jwalterweatherman/thatswhyyoualwaysleaveanote.go b/vendor/github.com/spf13/jwalterweatherman/thatswhyyoualwaysleaveanote.go
new file mode 100644
index 0000000..b64ed46
--- /dev/null
+++ b/vendor/github.com/spf13/jwalterweatherman/thatswhyyoualwaysleaveanote.go
@@ -0,0 +1,256 @@
+// Copyright © 2016 Steve Francia <spf@spf13.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+package jwalterweatherman
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"sync/atomic"
+)
+
+// Level describes the chosen log level between
+// debug and critical.
+type Level int
+
+type NotePad struct {
+	Handle  io.Writer
+	Level   Level
+	Prefix  string
+	Logger  **log.Logger
+	counter uint64
+}
+
+func (n *NotePad) incr() {
+	atomic.AddUint64(&n.counter, 1)
+}
+
+func (n *NotePad) resetCounter() {
+	atomic.StoreUint64(&n.counter, 0)
+}
+
+func (n *NotePad) getCount() uint64 {
+	return atomic.LoadUint64(&n.counter)
+}
+
+type countingWriter struct {
+	incrFunc func()
+}
+
+func (cw *countingWriter) Write(p []byte) (n int, err error) {
+	cw.incrFunc()
+
+	return 0, nil
+}
+
+// Feedback is special. It writes plainly to the output while
+// logging with the standard extra information (date, file, etc)
+// Only Println and Printf are currently provided for this
+type Feedback struct{}
+
+const (
+	LevelTrace Level = iota
+	LevelDebug
+	LevelInfo
+	LevelWarn
+	LevelError
+	LevelCritical
+	LevelFatal
+	DefaultLogThreshold    = LevelWarn
+	DefaultStdoutThreshold = LevelError
+)
+
+var (
+	TRACE      *log.Logger
+	DEBUG      *log.Logger
+	INFO       *log.Logger
+	WARN       *log.Logger
+	ERROR      *log.Logger
+	CRITICAL   *log.Logger
+	FATAL      *log.Logger
+	LOG        *log.Logger
+	FEEDBACK   Feedback
+	LogHandle  io.Writer  = ioutil.Discard
+	OutHandle  io.Writer  = os.Stdout
+	BothHandle io.Writer  = io.MultiWriter(LogHandle, OutHandle)
+	NotePads   []*NotePad = []*NotePad{trace, debug, info, warn, err, critical, fatal}
+
+	trace           *NotePad = &NotePad{Level: LevelTrace, Handle: os.Stdout, Logger: &TRACE, Prefix: "TRACE: "}
+	debug           *NotePad = &NotePad{Level: LevelDebug, Handle: os.Stdout, Logger: &DEBUG, Prefix: "DEBUG: "}
+	info            *NotePad = &NotePad{Level: LevelInfo, Handle: os.Stdout, Logger: &INFO, Prefix: "INFO: "}
+	warn            *NotePad = &NotePad{Level: LevelWarn, Handle: os.Stdout, Logger: &WARN, Prefix: "WARN: "}
+	err             *NotePad = &NotePad{Level: LevelError, Handle: os.Stdout, Logger: &ERROR, Prefix: "ERROR: "}
+	critical        *NotePad = &NotePad{Level: LevelCritical, Handle: os.Stdout, Logger: &CRITICAL, Prefix: "CRITICAL: "}
+	fatal           *NotePad = &NotePad{Level: LevelFatal, Handle: os.Stdout, Logger: &FATAL, Prefix: "FATAL: "}
+	logThreshold    Level    = DefaultLogThreshold
+	outputThreshold Level    = DefaultStdoutThreshold
+)
+
+const (
+	DATE  = log.Ldate
+	TIME  = log.Ltime
+	SFILE = log.Lshortfile
+	LFILE = log.Llongfile
+	MSEC  = log.Lmicroseconds
+)
+
+var logFlags = DATE | TIME | SFILE
+
+func init() {
+	SetStdoutThreshold(DefaultStdoutThreshold)
+}
+
+// initialize will setup the jWalterWeatherman standard approach of providing the user
+// some feedback and logging a potentially different amount based on independent log and output thresholds.
+// By default the output has a lower threshold than logged
+// Don't use if you have manually set the Handles of the different levels as it will overwrite them.
+func initialize() {
+	BothHandle = io.MultiWriter(LogHandle, OutHandle)
+
+	for _, n := range NotePads {
+		if n.Level < outputThreshold && n.Level < logThreshold {
+			n.Handle = ioutil.Discard
+		} else if n.Level >= outputThreshold && n.Level >= logThreshold {
+			n.Handle = BothHandle
+		} else if n.Level >= outputThreshold && n.Level < logThreshold {
+			n.Handle = OutHandle
+		} else {
+			n.Handle = LogHandle
+		}
+	}
+
+	for _, n := range NotePads {
+		n.Handle = io.MultiWriter(n.Handle, &countingWriter{n.incr})
+		*n.Logger = log.New(n.Handle, n.Prefix, logFlags)
+	}
+
+	LOG = log.New(LogHandle,
+		"LOG:   ",
+		logFlags)
+}
+
+// Set the log Flags (Available flag: DATE, TIME, SFILE, LFILE and MSEC)
+func SetLogFlag(flags int) {
+	logFlags = flags
+	initialize()
+}
+
+// Level returns the current global log threshold.
+func LogThreshold() Level {
+	return logThreshold
+}
+
+// Level returns the current global output threshold.
+func StdoutThreshold() Level {
+	return outputThreshold
+}
+
+// Ensures that the level provided is within the bounds of available levels
+func levelCheck(level Level) Level {
+	switch {
+	case level <= LevelTrace:
+		return LevelTrace
+	case level >= LevelFatal:
+		return LevelFatal
+	default:
+		return level
+	}
+}
+
+// Establishes a threshold where anything matching or above will be logged
+func SetLogThreshold(level Level) {
+	logThreshold = levelCheck(level)
+	initialize()
+}
+
+// Establishes a threshold where anything matching or above will be output
+func SetStdoutThreshold(level Level) {
+	outputThreshold = levelCheck(level)
+	initialize()
+}
+
+// Conveniently Sets the Log Handle to a io.writer created for the file behind the given filepath
+// Will only append to this file
+func SetLogFile(path string) {
+	file, err := os.OpenFile(path, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0666)
+	if err != nil {
+		CRITICAL.Println("Failed to open log file:", path, err)
+		os.Exit(-1)
+	}
+
+	INFO.Println("Logging to", file.Name())
+
+	LogHandle = file
+	initialize()
+}
+
+// Conveniently Creates a temporary file and sets the Log Handle to a io.writer created for it
+func UseTempLogFile(prefix string) {
+	file, err := ioutil.TempFile(os.TempDir(), prefix)
+	if err != nil {
+		CRITICAL.Println(err)
+	}
+
+	INFO.Println("Logging to", file.Name())
+
+	LogHandle = file
+	initialize()
+}
+
+// LogCountForLevel returns the number of log invocations for a given level.
+func LogCountForLevel(l Level) uint64 {
+	for _, np := range NotePads {
+		if np.Level == l {
+			return np.getCount()
+		}
+	}
+	return 0
+}
+
+// LogCountForLevelsGreaterThanorEqualTo returns the number of log invocations
+// greater than or equal to a given level threshold.
+func LogCountForLevelsGreaterThanorEqualTo(threshold Level) uint64 {
+	var cnt uint64
+	for _, np := range NotePads {
+		if np.Level >= threshold {
+			cnt += np.getCount()
+		}
+	}
+	return cnt
+}
+
+// ResetLogCounters resets the invocation counters for all levels.
+func ResetLogCounters() {
+	for _, np := range NotePads {
+		np.resetCounter()
+	}
+}
+
+// Disables logging for the entire JWW system
+func DiscardLogging() {
+	LogHandle = ioutil.Discard
+	initialize()
+}
+
+// Feedback is special. It writes plainly to the output while
+// logging with the standard extra information (date, file, etc)
+// Only Println and Printf are currently provided for this
+func (fb *Feedback) Println(v ...interface{}) {
+	s := fmt.Sprintln(v...)
+	fmt.Print(s)
+	LOG.Output(2, s)
+}
+
+// Feedback is special. It writes plainly to the output while
+// logging with the standard extra information (date, file, etc)
+// Only Println and Printf are currently provided for this
+func (fb *Feedback) Printf(format string, v ...interface{}) {
+	s := fmt.Sprintf(format, v...)
+	fmt.Print(s)
+	LOG.Output(2, s)
+}
diff --git a/vendor/github.com/spf13/pflag/LICENSE b/vendor/github.com/spf13/pflag/LICENSE
new file mode 100644
index 0000000..63ed1cf
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/LICENSE
@@ -0,0 +1,28 @@
+Copyright (c) 2012 Alex Ogier. All rights reserved.
+Copyright (c) 2012 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/spf13/pflag/README.md b/vendor/github.com/spf13/pflag/README.md
new file mode 100644
index 0000000..0bafd38
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/README.md
@@ -0,0 +1,256 @@
+[![Build Status](https://travis-ci.org/spf13/pflag.svg?branch=master)](https://travis-ci.org/spf13/pflag)
+
+## Description
+
+pflag is a drop-in replacement for Go's flag package, implementing
+POSIX/GNU-style --flags.
+
+pflag is compatible with the [GNU extensions to the POSIX recommendations
+for command-line options][1]. For a more precise description, see the
+"Command-line flag syntax" section below.
+
+[1]: http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
+
+pflag is available under the same style of BSD license as the Go language,
+which can be found in the LICENSE file.
+
+## Installation
+
+pflag is available using the standard `go get` command.
+
+Install by running:
+
+    go get github.com/spf13/pflag
+
+Run tests by running:
+
+    go test github.com/spf13/pflag
+
+## Usage
+
+pflag is a drop-in replacement of Go's native flag package. If you import
+pflag under the name "flag" then all code should continue to function
+with no changes.
+
+``` go
+import flag "github.com/spf13/pflag"
+```
+
+There is one exception to this: if you directly instantiate the Flag struct
+there is one more field "Shorthand" that you will need to set.
+Most code never instantiates this struct directly, and instead uses
+functions such as String(), BoolVar(), and Var(), and is therefore
+unaffected.
+
+Define flags using flag.String(), Bool(), Int(), etc.
+
+This declares an integer flag, -flagname, stored in the pointer ip, with type *int.
+
+``` go
+var ip *int = flag.Int("flagname", 1234, "help message for flagname")
+```
+
+If you like, you can bind the flag to a variable using the Var() functions.
+
+``` go
+var flagvar int
+func init() {
+    flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname")
+}
+```
+
+Or you can create custom flags that satisfy the Value interface (with
+pointer receivers) and couple them to flag parsing by
+
+``` go
+flag.Var(&flagVal, "name", "help message for flagname")
+```
+
+For such flags, the default value is just the initial value of the variable.
+
+After all flags are defined, call
+
+``` go
+flag.Parse()
+```
+
+to parse the command line into the defined flags.
+
+Flags may then be used directly. If you're using the flags themselves,
+they are all pointers; if you bind to variables, they're values.
+
+``` go
+fmt.Println("ip has value ", *ip)
+fmt.Println("flagvar has value ", flagvar)
+```
+
+There are helpers function to get values later if you have the FlagSet but
+it was difficult to keep up with all of the flag pointers in your code.
+If you have a pflag.FlagSet with a flag called 'flagname' of type int you
+can use GetInt() to get the int value. But notice that 'flagname' must exist
+and it must be an int. GetString("flagname") will fail.
+
+``` go
+i, err := flagset.GetInt("flagname")
+```
+
+After parsing, the arguments after the flag are available as the
+slice flag.Args() or individually as flag.Arg(i).
+The arguments are indexed from 0 through flag.NArg()-1.
+
+The pflag package also defines some new functions that are not in flag,
+that give one-letter shorthands for flags. You can use these by appending
+'P' to the name of any function that defines a flag.
+
+``` go
+var ip = flag.IntP("flagname", "f", 1234, "help message")
+var flagvar bool
+func init() {
+    flag.BoolVarP("boolname", "b", true, "help message")
+}
+flag.VarP(&flagVar, "varname", "v", 1234, "help message")
+```
+
+Shorthand letters can be used with single dashes on the command line.
+Boolean shorthand flags can be combined with other shorthand flags.
+
+The default set of command-line flags is controlled by
+top-level functions.  The FlagSet type allows one to define
+independent sets of flags, such as to implement subcommands
+in a command-line interface. The methods of FlagSet are
+analogous to the top-level functions for the command-line
+flag set.
+
+## Setting no option default values for flags
+
+After you create a flag it is possible to set the pflag.NoOptDefVal for
+the given flag. Doing this changes the meaning of the flag slightly. If
+a flag has a NoOptDefVal and the flag is set on the command line without
+an option the flag will be set to the NoOptDefVal. For example given:
+
+``` go
+var ip = flag.IntP("flagname", "f", 1234, "help message")
+flag.Lookup("flagname").NoOptDefVal = "4321"
+```
+
+Would result in something like
+
+| Parsed Arguments | Resulting Value |
+| -------------    | -------------   |
+| --flagname=1357  | ip=1357         |
+| --flagname       | ip=4321         |
+| [nothing]        | ip=1234         |
+
+## Command line flag syntax
+
+```
+--flag    // boolean flags, or flags with no option default values
+--flag x  // only on flags without a default value
+--flag=x
+```
+
+Unlike the flag package, a single dash before an option means something
+different than a double dash. Single dashes signify a series of shorthand
+letters for flags. All but the last shorthand letter must be boolean flags
+or a flag with a default value
+
+```
+// boolean or flags where the 'no option default value' is set
+-f
+-f=true
+-abc
+but
+-b true is INVALID
+
+// non-boolean and flags without a 'no option default value'
+-n 1234
+-n=1234
+-n1234
+
+// mixed
+-abcs "hello"
+-absd="hello"
+-abcs1234
+```
+
+Flag parsing stops after the terminator "--". Unlike the flag package,
+flags can be interspersed with arguments anywhere on the command line
+before this terminator.
+
+Integer flags accept 1234, 0664, 0x1234 and may be negative.
+Boolean flags (in their long form) accept 1, 0, t, f, true, false,
+TRUE, FALSE, True, False.
+Duration flags accept any input valid for time.ParseDuration.
+
+## Mutating or "Normalizing" Flag names
+
+It is possible to set a custom flag name 'normalization function.' It allows flag names to be mutated both when created in the code and when used on the command line to some 'normalized' form. The 'normalized' form is used for comparison. Two examples of using the custom normalization func follow.
+
+**Example #1**: You want -, _, and . in flags to compare the same. aka --my-flag == --my_flag == --my.flag
+
+``` go
+func wordSepNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName {
+	from := []string{"-", "_"}
+	to := "."
+	for _, sep := range from {
+		name = strings.Replace(name, sep, to, -1)
+	}
+	return pflag.NormalizedName(name)
+}
+
+myFlagSet.SetNormalizeFunc(wordSepNormalizeFunc)
+```
+
+**Example #2**: You want to alias two flags. aka --old-flag-name == --new-flag-name
+
+``` go
+func aliasNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName {
+	switch name {
+	case "old-flag-name":
+		name = "new-flag-name"
+		break
+	}
+	return pflag.NormalizedName(name)
+}
+
+myFlagSet.SetNormalizeFunc(aliasNormalizeFunc)
+```
+
+## Deprecating a flag or its shorthand
+It is possible to deprecate a flag, or just its shorthand. Deprecating a flag/shorthand hides it from help text and prints a usage message when the deprecated flag/shorthand is used.
+
+**Example #1**: You want to deprecate a flag named "badflag" as well as inform the users what flag they should use instead.
+```go
+// deprecate a flag by specifying its name and a usage message
+flags.MarkDeprecated("badflag", "please use --good-flag instead")
+```
+This hides "badflag" from help text, and prints `Flag --badflag has been deprecated, please use --good-flag instead` when "badflag" is used.
+
+**Example #2**: You want to keep a flag name "noshorthandflag" but deprecate its shortname "n".
+```go
+// deprecate a flag shorthand by specifying its flag name and a usage message
+flags.MarkShorthandDeprecated("noshorthandflag", "please use --noshorthandflag only")
+```
+This hides the shortname "n" from help text, and prints `Flag shorthand -n has been deprecated, please use --noshorthandflag only` when the shorthand "n" is used.
+
+Note that usage message is essential here, and it should not be empty.
+
+## Hidden flags
+It is possible to mark a flag as hidden, meaning it will still function as normal, however will not show up in usage/help text.
+
+**Example**: You have a flag named "secretFlag" that you need for internal use only and don't want it showing up in help text, or for its usage text to be available.
+```go
+// hide a flag by specifying its name
+flags.MarkHidden("secretFlag")
+```
+
+## More info
+
+You can see the full reference documentation of the pflag package
+[at godoc.org][3], or through go's standard documentation system by
+running `godoc -http=:6060` and browsing to
+[http://localhost:6060/pkg/github.com/ogier/pflag][2] after
+installation.
+
+[2]: http://localhost:6060/pkg/github.com/ogier/pflag
+[3]: http://godoc.org/github.com/ogier/pflag
diff --git a/vendor/github.com/spf13/pflag/bool.go b/vendor/github.com/spf13/pflag/bool.go
new file mode 100644
index 0000000..d272e40
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/bool.go
@@ -0,0 +1,97 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// optional interface to indicate boolean flags that can be
+// supplied without "=value" text
+type boolFlag interface {
+	Value
+	IsBoolFlag() bool
+}
+
+// -- bool Value
+type boolValue bool
+
+func newBoolValue(val bool, p *bool) *boolValue {
+	*p = val
+	return (*boolValue)(p)
+}
+
+func (b *boolValue) Set(s string) error {
+	v, err := strconv.ParseBool(s)
+	*b = boolValue(v)
+	return err
+}
+
+func (b *boolValue) Type() string {
+	return "bool"
+}
+
+func (b *boolValue) String() string { return fmt.Sprintf("%v", *b) }
+
+func (b *boolValue) IsBoolFlag() bool { return true }
+
+func boolConv(sval string) (interface{}, error) {
+	return strconv.ParseBool(sval)
+}
+
+// GetBool return the bool value of a flag with the given name
+func (f *FlagSet) GetBool(name string) (bool, error) {
+	val, err := f.getFlagType(name, "bool", boolConv)
+	if err != nil {
+		return false, err
+	}
+	return val.(bool), nil
+}
+
+// BoolVar defines a bool flag with specified name, default value, and usage string.
+// The argument p points to a bool variable in which to store the value of the flag.
+func (f *FlagSet) BoolVar(p *bool, name string, value bool, usage string) {
+	f.BoolVarP(p, name, "", value, usage)
+}
+
+// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
+	flag := f.VarPF(newBoolValue(value, p), name, shorthand, usage)
+	flag.NoOptDefVal = "true"
+}
+
+// BoolVar defines a bool flag with specified name, default value, and usage string.
+// The argument p points to a bool variable in which to store the value of the flag.
+func BoolVar(p *bool, name string, value bool, usage string) {
+	BoolVarP(p, name, "", value, usage)
+}
+
+// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
+func BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
+	flag := CommandLine.VarPF(newBoolValue(value, p), name, shorthand, usage)
+	flag.NoOptDefVal = "true"
+}
+
+// Bool defines a bool flag with specified name, default value, and usage string.
+// The return value is the address of a bool variable that stores the value of the flag.
+func (f *FlagSet) Bool(name string, value bool, usage string) *bool {
+	return f.BoolP(name, "", value, usage)
+}
+
+// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BoolP(name, shorthand string, value bool, usage string) *bool {
+	p := new(bool)
+	f.BoolVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Bool defines a bool flag with specified name, default value, and usage string.
+// The return value is the address of a bool variable that stores the value of the flag.
+func Bool(name string, value bool, usage string) *bool {
+	return BoolP(name, "", value, usage)
+}
+
+// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
+func BoolP(name, shorthand string, value bool, usage string) *bool {
+	b := CommandLine.BoolP(name, shorthand, value, usage)
+	return b
+}
diff --git a/vendor/github.com/spf13/pflag/count.go b/vendor/github.com/spf13/pflag/count.go
new file mode 100644
index 0000000..7b1f142
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/count.go
@@ -0,0 +1,97 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- count Value
+type countValue int
+
+func newCountValue(val int, p *int) *countValue {
+	*p = val
+	return (*countValue)(p)
+}
+
+func (i *countValue) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	// -1 means that no specific value was passed, so increment
+	if v == -1 {
+		*i = countValue(*i + 1)
+	} else {
+		*i = countValue(v)
+	}
+	return err
+}
+
+func (i *countValue) Type() string {
+	return "count"
+}
+
+func (i *countValue) String() string { return fmt.Sprintf("%v", *i) }
+
+func countConv(sval string) (interface{}, error) {
+	i, err := strconv.Atoi(sval)
+	if err != nil {
+		return nil, err
+	}
+	return i, nil
+}
+
+// GetCount return the int value of a flag with the given name
+func (f *FlagSet) GetCount(name string) (int, error) {
+	val, err := f.getFlagType(name, "count", countConv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int), nil
+}
+
+// CountVar defines a count flag with specified name, default value, and usage string.
+// The argument p points to an int variable in which to store the value of the flag.
+// A count flag will add 1 to its value evey time it is found on the command line
+func (f *FlagSet) CountVar(p *int, name string, usage string) {
+	f.CountVarP(p, name, "", usage)
+}
+
+// CountVarP is like CountVar only take a shorthand for the flag name.
+func (f *FlagSet) CountVarP(p *int, name, shorthand string, usage string) {
+	flag := f.VarPF(newCountValue(0, p), name, shorthand, usage)
+	flag.NoOptDefVal = "-1"
+}
+
+// CountVar like CountVar only the flag is placed on the CommandLine instead of a given flag set
+func CountVar(p *int, name string, usage string) {
+	CommandLine.CountVar(p, name, usage)
+}
+
+// CountVarP is like CountVar only take a shorthand for the flag name.
+func CountVarP(p *int, name, shorthand string, usage string) {
+	CommandLine.CountVarP(p, name, shorthand, usage)
+}
+
+// Count defines a count flag with specified name, default value, and usage string.
+// The return value is the address of an int variable that stores the value of the flag.
+// A count flag will add 1 to its value evey time it is found on the command line
+func (f *FlagSet) Count(name string, usage string) *int {
+	p := new(int)
+	f.CountVarP(p, name, "", usage)
+	return p
+}
+
+// CountP is like Count only takes a shorthand for the flag name.
+func (f *FlagSet) CountP(name, shorthand string, usage string) *int {
+	p := new(int)
+	f.CountVarP(p, name, shorthand, usage)
+	return p
+}
+
+// Count like Count only the flag is placed on the CommandLine isntead of a given flag set
+func Count(name string, usage string) *int {
+	return CommandLine.CountP(name, "", usage)
+}
+
+// CountP is like Count only takes a shorthand for the flag name.
+func CountP(name, shorthand string, usage string) *int {
+	return CommandLine.CountP(name, shorthand, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/duration.go b/vendor/github.com/spf13/pflag/duration.go
new file mode 100644
index 0000000..e9debef
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/duration.go
@@ -0,0 +1,86 @@
+package pflag
+
+import (
+	"time"
+)
+
+// -- time.Duration Value
+type durationValue time.Duration
+
+func newDurationValue(val time.Duration, p *time.Duration) *durationValue {
+	*p = val
+	return (*durationValue)(p)
+}
+
+func (d *durationValue) Set(s string) error {
+	v, err := time.ParseDuration(s)
+	*d = durationValue(v)
+	return err
+}
+
+func (d *durationValue) Type() string {
+	return "duration"
+}
+
+func (d *durationValue) String() string { return (*time.Duration)(d).String() }
+
+func durationConv(sval string) (interface{}, error) {
+	return time.ParseDuration(sval)
+}
+
+// GetDuration return the duration value of a flag with the given name
+func (f *FlagSet) GetDuration(name string) (time.Duration, error) {
+	val, err := f.getFlagType(name, "duration", durationConv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(time.Duration), nil
+}
+
+// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
+// The argument p points to a time.Duration variable in which to store the value of the flag.
+func (f *FlagSet) DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
+	f.VarP(newDurationValue(value, p), name, "", usage)
+}
+
+// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
+	f.VarP(newDurationValue(value, p), name, shorthand, usage)
+}
+
+// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
+// The argument p points to a time.Duration variable in which to store the value of the flag.
+func DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
+	CommandLine.VarP(newDurationValue(value, p), name, "", usage)
+}
+
+// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
+func DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
+	CommandLine.VarP(newDurationValue(value, p), name, shorthand, usage)
+}
+
+// Duration defines a time.Duration flag with specified name, default value, and usage string.
+// The return value is the address of a time.Duration variable that stores the value of the flag.
+func (f *FlagSet) Duration(name string, value time.Duration, usage string) *time.Duration {
+	p := new(time.Duration)
+	f.DurationVarP(p, name, "", value, usage)
+	return p
+}
+
+// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
+	p := new(time.Duration)
+	f.DurationVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Duration defines a time.Duration flag with specified name, default value, and usage string.
+// The return value is the address of a time.Duration variable that stores the value of the flag.
+func Duration(name string, value time.Duration, usage string) *time.Duration {
+	return CommandLine.DurationP(name, "", value, usage)
+}
+
+// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
+func DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
+	return CommandLine.DurationP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/flag.go b/vendor/github.com/spf13/pflag/flag.go
new file mode 100644
index 0000000..965df13
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/flag.go
@@ -0,0 +1,934 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package pflag is a drop-in replacement for Go's flag package, implementing
+POSIX/GNU-style --flags.
+
+pflag is compatible with the GNU extensions to the POSIX recommendations
+for command-line options. See
+http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
+
+Usage:
+
+pflag is a drop-in replacement of Go's native flag package. If you import
+pflag under the name "flag" then all code should continue to function
+with no changes.
+
+	import flag "github.com/ogier/pflag"
+
+	There is one exception to this: if you directly instantiate the Flag struct
+there is one more field "Shorthand" that you will need to set.
+Most code never instantiates this struct directly, and instead uses
+functions such as String(), BoolVar(), and Var(), and is therefore
+unaffected.
+
+Define flags using flag.String(), Bool(), Int(), etc.
+
+This declares an integer flag, -flagname, stored in the pointer ip, with type *int.
+	var ip = flag.Int("flagname", 1234, "help message for flagname")
+If you like, you can bind the flag to a variable using the Var() functions.
+	var flagvar int
+	func init() {
+		flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname")
+	}
+Or you can create custom flags that satisfy the Value interface (with
+pointer receivers) and couple them to flag parsing by
+	flag.Var(&flagVal, "name", "help message for flagname")
+For such flags, the default value is just the initial value of the variable.
+
+After all flags are defined, call
+	flag.Parse()
+to parse the command line into the defined flags.
+
+Flags may then be used directly. If you're using the flags themselves,
+they are all pointers; if you bind to variables, they're values.
+	fmt.Println("ip has value ", *ip)
+	fmt.Println("flagvar has value ", flagvar)
+
+After parsing, the arguments after the flag are available as the
+slice flag.Args() or individually as flag.Arg(i).
+The arguments are indexed from 0 through flag.NArg()-1.
+
+The pflag package also defines some new functions that are not in flag,
+that give one-letter shorthands for flags. You can use these by appending
+'P' to the name of any function that defines a flag.
+	var ip = flag.IntP("flagname", "f", 1234, "help message")
+	var flagvar bool
+	func init() {
+		flag.BoolVarP("boolname", "b", true, "help message")
+	}
+	flag.VarP(&flagVar, "varname", "v", 1234, "help message")
+Shorthand letters can be used with single dashes on the command line.
+Boolean shorthand flags can be combined with other shorthand flags.
+
+Command line flag syntax:
+	--flag    // boolean flags only
+	--flag=x
+
+Unlike the flag package, a single dash before an option means something
+different than a double dash. Single dashes signify a series of shorthand
+letters for flags. All but the last shorthand letter must be boolean flags.
+	// boolean flags
+	-f
+	-abc
+	// non-boolean flags
+	-n 1234
+	-Ifile
+	// mixed
+	-abcs "hello"
+	-abcn1234
+
+Flag parsing stops after the terminator "--". Unlike the flag package,
+flags can be interspersed with arguments anywhere on the command line
+before this terminator.
+
+Integer flags accept 1234, 0664, 0x1234 and may be negative.
+Boolean flags (in their long form) accept 1, 0, t, f, true, false,
+TRUE, FALSE, True, False.
+Duration flags accept any input valid for time.ParseDuration.
+
+The default set of command-line flags is controlled by
+top-level functions.  The FlagSet type allows one to define
+independent sets of flags, such as to implement subcommands
+in a command-line interface. The methods of FlagSet are
+analogous to the top-level functions for the command-line
+flag set.
+*/
+package pflag
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"sort"
+	"strings"
+)
+
+// ErrHelp is the error returned if the flag -help is invoked but no such flag is defined.
+var ErrHelp = errors.New("pflag: help requested")
+
+// ErrorHandling defines how to handle flag parsing errors.
+type ErrorHandling int
+
+const (
+	// ContinueOnError will return an err from Parse() if an error is found
+	ContinueOnError ErrorHandling = iota
+	// ExitOnError will call os.Exit(2) if an error is found when parsing
+	ExitOnError
+	// PanicOnError will panic() if an error is found when parsing flags
+	PanicOnError
+)
+
+// NormalizedName is a flag name that has been normalized according to rules
+// for the FlagSet (e.g. making '-' and '_' equivalent).
+type NormalizedName string
+
+// A FlagSet represents a set of defined flags.
+type FlagSet struct {
+	// Usage is the function called when an error occurs while parsing flags.
+	// The field is a function (not a method) that may be changed to point to
+	// a custom error handler.
+	Usage func()
+
+	name              string
+	parsed            bool
+	actual            map[NormalizedName]*Flag
+	formal            map[NormalizedName]*Flag
+	shorthands        map[byte]*Flag
+	args              []string // arguments after flags
+	argsLenAtDash     int      // len(args) when a '--' was located when parsing, or -1 if no --
+	exitOnError       bool     // does the program exit if there's an error?
+	errorHandling     ErrorHandling
+	output            io.Writer // nil means stderr; use out() accessor
+	interspersed      bool      // allow interspersed option/non-option args
+	normalizeNameFunc func(f *FlagSet, name string) NormalizedName
+}
+
+// A Flag represents the state of a flag.
+type Flag struct {
+	Name                string              // name as it appears on command line
+	Shorthand           string              // one-letter abbreviated flag
+	Usage               string              // help message
+	Value               Value               // value as set
+	DefValue            string              // default value (as text); for usage message
+	Changed             bool                // If the user set the value (or if left to default)
+	NoOptDefVal         string              //default value (as text); if the flag is on the command line without any options
+	Deprecated          string              // If this flag is deprecated, this string is the new or now thing to use
+	Hidden              bool                // used by cobra.Command to allow flags to be hidden from help/usage text
+	ShorthandDeprecated string              // If the shorthand of this flag is deprecated, this string is the new or now thing to use
+	Annotations         map[string][]string // used by cobra.Command bash autocomple code
+}
+
+// Value is the interface to the dynamic value stored in a flag.
+// (The default value is represented as a string.)
+type Value interface {
+	String() string
+	Set(string) error
+	Type() string
+}
+
+// sortFlags returns the flags as a slice in lexicographical sorted order.
+func sortFlags(flags map[NormalizedName]*Flag) []*Flag {
+	list := make(sort.StringSlice, len(flags))
+	i := 0
+	for k := range flags {
+		list[i] = string(k)
+		i++
+	}
+	list.Sort()
+	result := make([]*Flag, len(list))
+	for i, name := range list {
+		result[i] = flags[NormalizedName(name)]
+	}
+	return result
+}
+
+// SetNormalizeFunc allows you to add a function which can translate flag names.
+// Flags added to the FlagSet will be translated and then when anything tries to
+// look up the flag that will also be translated. So it would be possible to create
+// a flag named "getURL" and have it translated to "geturl".  A user could then pass
+// "--getUrl" which may also be translated to "geturl" and everything will work.
+func (f *FlagSet) SetNormalizeFunc(n func(f *FlagSet, name string) NormalizedName) {
+	f.normalizeNameFunc = n
+	for k, v := range f.formal {
+		delete(f.formal, k)
+		nname := f.normalizeFlagName(string(k))
+		f.formal[nname] = v
+		v.Name = string(nname)
+	}
+}
+
+// GetNormalizeFunc returns the previously set NormalizeFunc of a function which
+// does no translation, if not set previously.
+func (f *FlagSet) GetNormalizeFunc() func(f *FlagSet, name string) NormalizedName {
+	if f.normalizeNameFunc != nil {
+		return f.normalizeNameFunc
+	}
+	return func(f *FlagSet, name string) NormalizedName { return NormalizedName(name) }
+}
+
+func (f *FlagSet) normalizeFlagName(name string) NormalizedName {
+	n := f.GetNormalizeFunc()
+	return n(f, name)
+}
+
+func (f *FlagSet) out() io.Writer {
+	if f.output == nil {
+		return os.Stderr
+	}
+	return f.output
+}
+
+// SetOutput sets the destination for usage and error messages.
+// If output is nil, os.Stderr is used.
+func (f *FlagSet) SetOutput(output io.Writer) {
+	f.output = output
+}
+
+// VisitAll visits the flags in lexicographical order, calling fn for each.
+// It visits all flags, even those not set.
+func (f *FlagSet) VisitAll(fn func(*Flag)) {
+	for _, flag := range sortFlags(f.formal) {
+		fn(flag)
+	}
+}
+
+// HasFlags returns a bool to indicate if the FlagSet has any flags definied.
+func (f *FlagSet) HasFlags() bool {
+	return len(f.formal) > 0
+}
+
+// HasAvailableFlags returns a bool to indicate if the FlagSet has any flags
+// definied that are not hidden or deprecated.
+func (f *FlagSet) HasAvailableFlags() bool {
+	for _, flag := range f.formal {
+		if !flag.Hidden && len(flag.Deprecated) == 0 {
+			return true
+		}
+	}
+	return false
+}
+
+// VisitAll visits the command-line flags in lexicographical order, calling
+// fn for each.  It visits all flags, even those not set.
+func VisitAll(fn func(*Flag)) {
+	CommandLine.VisitAll(fn)
+}
+
+// Visit visits the flags in lexicographical order, calling fn for each.
+// It visits only those flags that have been set.
+func (f *FlagSet) Visit(fn func(*Flag)) {
+	for _, flag := range sortFlags(f.actual) {
+		fn(flag)
+	}
+}
+
+// Visit visits the command-line flags in lexicographical order, calling fn
+// for each.  It visits only those flags that have been set.
+func Visit(fn func(*Flag)) {
+	CommandLine.Visit(fn)
+}
+
+// Lookup returns the Flag structure of the named flag, returning nil if none exists.
+func (f *FlagSet) Lookup(name string) *Flag {
+	return f.lookup(f.normalizeFlagName(name))
+}
+
+// lookup returns the Flag structure of the named flag, returning nil if none exists.
+func (f *FlagSet) lookup(name NormalizedName) *Flag {
+	return f.formal[name]
+}
+
+// func to return a given type for a given flag name
+func (f *FlagSet) getFlagType(name string, ftype string, convFunc func(sval string) (interface{}, error)) (interface{}, error) {
+	flag := f.Lookup(name)
+	if flag == nil {
+		err := fmt.Errorf("flag accessed but not defined: %s", name)
+		return nil, err
+	}
+
+	if flag.Value.Type() != ftype {
+		err := fmt.Errorf("trying to get %s value of flag of type %s", ftype, flag.Value.Type())
+		return nil, err
+	}
+
+	sval := flag.Value.String()
+	result, err := convFunc(sval)
+	if err != nil {
+		return nil, err
+	}
+	return result, nil
+}
+
+// ArgsLenAtDash will return the length of f.Args at the moment when a -- was
+// found during arg parsing. This allows your program to know which args were
+// before the -- and which came after.
+func (f *FlagSet) ArgsLenAtDash() int {
+	return f.argsLenAtDash
+}
+
+// MarkDeprecated indicated that a flag is deprecated in your program. It will
+// continue to function but will not show up in help or usage messages. Using
+// this flag will also print the given usageMessage.
+func (f *FlagSet) MarkDeprecated(name string, usageMessage string) error {
+	flag := f.Lookup(name)
+	if flag == nil {
+		return fmt.Errorf("flag %q does not exist", name)
+	}
+	if len(usageMessage) == 0 {
+		return fmt.Errorf("deprecated message for flag %q must be set", name)
+	}
+	flag.Deprecated = usageMessage
+	return nil
+}
+
+// MarkShorthandDeprecated will mark the shorthand of a flag deprecated in your
+// program. It will continue to function but will not show up in help or usage
+// messages. Using this flag will also print the given usageMessage.
+func (f *FlagSet) MarkShorthandDeprecated(name string, usageMessage string) error {
+	flag := f.Lookup(name)
+	if flag == nil {
+		return fmt.Errorf("flag %q does not exist", name)
+	}
+	if len(usageMessage) == 0 {
+		return fmt.Errorf("deprecated message for flag %q must be set", name)
+	}
+	flag.ShorthandDeprecated = usageMessage
+	return nil
+}
+
+// MarkHidden sets a flag to 'hidden' in your program. It will continue to
+// function but will not show up in help or usage messages.
+func (f *FlagSet) MarkHidden(name string) error {
+	flag := f.Lookup(name)
+	if flag == nil {
+		return fmt.Errorf("flag %q does not exist", name)
+	}
+	flag.Hidden = true
+	return nil
+}
+
+// Lookup returns the Flag structure of the named command-line flag,
+// returning nil if none exists.
+func Lookup(name string) *Flag {
+	return CommandLine.Lookup(name)
+}
+
+// Set sets the value of the named flag.
+func (f *FlagSet) Set(name, value string) error {
+	normalName := f.normalizeFlagName(name)
+	flag, ok := f.formal[normalName]
+	if !ok {
+		return fmt.Errorf("no such flag -%v", name)
+	}
+	err := flag.Value.Set(value)
+	if err != nil {
+		return err
+	}
+	if f.actual == nil {
+		f.actual = make(map[NormalizedName]*Flag)
+	}
+	f.actual[normalName] = flag
+	flag.Changed = true
+	if len(flag.Deprecated) > 0 {
+		fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
+	}
+	return nil
+}
+
+// SetAnnotation allows one to set arbitrary annotations on a flag in the FlagSet.
+// This is sometimes used by spf13/cobra programs which want to generate additional
+// bash completion information.
+func (f *FlagSet) SetAnnotation(name, key string, values []string) error {
+	normalName := f.normalizeFlagName(name)
+	flag, ok := f.formal[normalName]
+	if !ok {
+		return fmt.Errorf("no such flag -%v", name)
+	}
+	if flag.Annotations == nil {
+		flag.Annotations = map[string][]string{}
+	}
+	flag.Annotations[key] = values
+	return nil
+}
+
+// Changed returns true if the flag was explicitly set during Parse() and false
+// otherwise
+func (f *FlagSet) Changed(name string) bool {
+	flag := f.Lookup(name)
+	// If a flag doesn't exist, it wasn't changed....
+	if flag == nil {
+		return false
+	}
+	return flag.Changed
+}
+
+// Set sets the value of the named command-line flag.
+func Set(name, value string) error {
+	return CommandLine.Set(name, value)
+}
+
+// PrintDefaults prints, to standard error unless configured
+// otherwise, the default values of all defined flags in the set.
+func (f *FlagSet) PrintDefaults() {
+	usages := f.FlagUsages()
+	fmt.Fprintf(f.out(), "%s", usages)
+}
+
+// isZeroValue guesses whether the string represents the zero
+// value for a flag. It is not accurate but in practice works OK.
+func isZeroValue(value string) bool {
+	switch value {
+	case "false":
+		return true
+	case "<nil>":
+		return true
+	case "":
+		return true
+	case "0":
+		return true
+	}
+	return false
+}
+
+// UnquoteUsage extracts a back-quoted name from the usage
+// string for a flag and returns it and the un-quoted usage.
+// Given "a `name` to show" it returns ("name", "a name to show").
+// If there are no back quotes, the name is an educated guess of the
+// type of the flag's value, or the empty string if the flag is boolean.
+func UnquoteUsage(flag *Flag) (name string, usage string) {
+	// Look for a back-quoted name, but avoid the strings package.
+	usage = flag.Usage
+	for i := 0; i < len(usage); i++ {
+		if usage[i] == '`' {
+			for j := i + 1; j < len(usage); j++ {
+				if usage[j] == '`' {
+					name = usage[i+1 : j]
+					usage = usage[:i] + name + usage[j+1:]
+					return name, usage
+				}
+			}
+			break // Only one back quote; use type name.
+		}
+	}
+	// No explicit name, so use type if we can find one.
+	name = "value"
+	switch flag.Value.(type) {
+	case boolFlag:
+		name = ""
+	case *durationValue:
+		name = "duration"
+	case *float64Value:
+		name = "float"
+	case *intValue, *int64Value:
+		name = "int"
+	case *stringValue:
+		name = "string"
+	case *uintValue, *uint64Value:
+		name = "uint"
+	}
+	return
+}
+
+// FlagUsages Returns a string containing the usage information for all flags in
+// the FlagSet
+func (f *FlagSet) FlagUsages() string {
+	x := new(bytes.Buffer)
+
+	lines := make([]string, 0, len(f.formal))
+
+	maxlen := 0
+	f.VisitAll(func(flag *Flag) {
+		if len(flag.Deprecated) > 0 || flag.Hidden {
+			return
+		}
+
+		line := ""
+		if len(flag.Shorthand) > 0 && len(flag.ShorthandDeprecated) == 0 {
+			line = fmt.Sprintf("  -%s, --%s", flag.Shorthand, flag.Name)
+		} else {
+			line = fmt.Sprintf("      --%s", flag.Name)
+		}
+
+		varname, usage := UnquoteUsage(flag)
+		if len(varname) > 0 {
+			line += " " + varname
+		}
+		if len(flag.NoOptDefVal) > 0 {
+			switch flag.Value.Type() {
+			case "string":
+				line += fmt.Sprintf("[=%q]", flag.NoOptDefVal)
+			case "bool":
+				if flag.NoOptDefVal != "true" {
+					line += fmt.Sprintf("[=%s]", flag.NoOptDefVal)
+				}
+			default:
+				line += fmt.Sprintf("[=%s]", flag.NoOptDefVal)
+			}
+		}
+
+		// This special character will be replaced with spacing once the
+		// correct alignment is calculated
+		line += "\x00"
+		if len(line) > maxlen {
+			maxlen = len(line)
+		}
+
+		line += usage
+		if !isZeroValue(flag.DefValue) {
+			if flag.Value.Type() == "string" {
+				line += fmt.Sprintf(" (default %q)", flag.DefValue)
+			} else {
+				line += fmt.Sprintf(" (default %s)", flag.DefValue)
+			}
+		}
+
+		lines = append(lines, line)
+	})
+
+	for _, line := range lines {
+		sidx := strings.Index(line, "\x00")
+		spacing := strings.Repeat(" ", maxlen-sidx)
+		fmt.Fprintln(x, line[:sidx], spacing, line[sidx+1:])
+	}
+
+	return x.String()
+}
+
+// PrintDefaults prints to standard error the default values of all defined command-line flags.
+func PrintDefaults() {
+	CommandLine.PrintDefaults()
+}
+
+// defaultUsage is the default function to print a usage message.
+func defaultUsage(f *FlagSet) {
+	fmt.Fprintf(f.out(), "Usage of %s:\n", f.name)
+	f.PrintDefaults()
+}
+
+// NOTE: Usage is not just defaultUsage(CommandLine)
+// because it serves (via godoc flag Usage) as the example
+// for how to write your own usage function.
+
+// Usage prints to standard error a usage message documenting all defined command-line flags.
+// The function is a variable that may be changed to point to a custom function.
+// By default it prints a simple header and calls PrintDefaults; for details about the
+// format of the output and how to control it, see the documentation for PrintDefaults.
+var Usage = func() {
+	fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
+	PrintDefaults()
+}
+
+// NFlag returns the number of flags that have been set.
+func (f *FlagSet) NFlag() int { return len(f.actual) }
+
+// NFlag returns the number of command-line flags that have been set.
+func NFlag() int { return len(CommandLine.actual) }
+
+// Arg returns the i'th argument.  Arg(0) is the first remaining argument
+// after flags have been processed.
+func (f *FlagSet) Arg(i int) string {
+	if i < 0 || i >= len(f.args) {
+		return ""
+	}
+	return f.args[i]
+}
+
+// Arg returns the i'th command-line argument.  Arg(0) is the first remaining argument
+// after flags have been processed.
+func Arg(i int) string {
+	return CommandLine.Arg(i)
+}
+
+// NArg is the number of arguments remaining after flags have been processed.
+func (f *FlagSet) NArg() int { return len(f.args) }
+
+// NArg is the number of arguments remaining after flags have been processed.
+func NArg() int { return len(CommandLine.args) }
+
+// Args returns the non-flag arguments.
+func (f *FlagSet) Args() []string { return f.args }
+
+// Args returns the non-flag command-line arguments.
+func Args() []string { return CommandLine.args }
+
+// Var defines a flag with the specified name and usage string. The type and
+// value of the flag are represented by the first argument, of type Value, which
+// typically holds a user-defined implementation of Value. For instance, the
+// caller could create a flag that turns a comma-separated string into a slice
+// of strings by giving the slice the methods of Value; in particular, Set would
+// decompose the comma-separated string into the slice.
+func (f *FlagSet) Var(value Value, name string, usage string) {
+	f.VarP(value, name, "", usage)
+}
+
+// VarPF is like VarP, but returns the flag created
+func (f *FlagSet) VarPF(value Value, name, shorthand, usage string) *Flag {
+	// Remember the default value as a string; it won't change.
+	flag := &Flag{
+		Name:      name,
+		Shorthand: shorthand,
+		Usage:     usage,
+		Value:     value,
+		DefValue:  value.String(),
+	}
+	f.AddFlag(flag)
+	return flag
+}
+
+// VarP is like Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) VarP(value Value, name, shorthand, usage string) {
+	_ = f.VarPF(value, name, shorthand, usage)
+}
+
+// AddFlag will add the flag to the FlagSet
+func (f *FlagSet) AddFlag(flag *Flag) {
+	// Call normalizeFlagName function only once
+	normalizedFlagName := f.normalizeFlagName(flag.Name)
+
+	_, alreadythere := f.formal[normalizedFlagName]
+	if alreadythere {
+		msg := fmt.Sprintf("%s flag redefined: %s", f.name, flag.Name)
+		fmt.Fprintln(f.out(), msg)
+		panic(msg) // Happens only if flags are declared with identical names
+	}
+	if f.formal == nil {
+		f.formal = make(map[NormalizedName]*Flag)
+	}
+
+	flag.Name = string(normalizedFlagName)
+	f.formal[normalizedFlagName] = flag
+
+	if len(flag.Shorthand) == 0 {
+		return
+	}
+	if len(flag.Shorthand) > 1 {
+		fmt.Fprintf(f.out(), "%s shorthand more than ASCII character: %s\n", f.name, flag.Shorthand)
+		panic("shorthand is more than one character")
+	}
+	if f.shorthands == nil {
+		f.shorthands = make(map[byte]*Flag)
+	}
+	c := flag.Shorthand[0]
+	old, alreadythere := f.shorthands[c]
+	if alreadythere {
+		fmt.Fprintf(f.out(), "%s shorthand reused: %q for %s already used for %s\n", f.name, c, flag.Name, old.Name)
+		panic("shorthand redefinition")
+	}
+	f.shorthands[c] = flag
+}
+
+// AddFlagSet adds one FlagSet to another. If a flag is already present in f
+// the flag from newSet will be ignored
+func (f *FlagSet) AddFlagSet(newSet *FlagSet) {
+	if newSet == nil {
+		return
+	}
+	newSet.VisitAll(func(flag *Flag) {
+		if f.Lookup(flag.Name) == nil {
+			f.AddFlag(flag)
+		}
+	})
+}
+
+// Var defines a flag with the specified name and usage string. The type and
+// value of the flag are represented by the first argument, of type Value, which
+// typically holds a user-defined implementation of Value. For instance, the
+// caller could create a flag that turns a comma-separated string into a slice
+// of strings by giving the slice the methods of Value; in particular, Set would
+// decompose the comma-separated string into the slice.
+func Var(value Value, name string, usage string) {
+	CommandLine.VarP(value, name, "", usage)
+}
+
+// VarP is like Var, but accepts a shorthand letter that can be used after a single dash.
+func VarP(value Value, name, shorthand, usage string) {
+	CommandLine.VarP(value, name, shorthand, usage)
+}
+
+// failf prints to standard error a formatted error and usage message and
+// returns the error.
+func (f *FlagSet) failf(format string, a ...interface{}) error {
+	err := fmt.Errorf(format, a...)
+	fmt.Fprintln(f.out(), err)
+	f.usage()
+	return err
+}
+
+// usage calls the Usage method for the flag set, or the usage function if
+// the flag set is CommandLine.
+func (f *FlagSet) usage() {
+	if f == CommandLine {
+		Usage()
+	} else if f.Usage == nil {
+		defaultUsage(f)
+	} else {
+		f.Usage()
+	}
+}
+
+func (f *FlagSet) setFlag(flag *Flag, value string, origArg string) error {
+	if err := flag.Value.Set(value); err != nil {
+		return f.failf("invalid argument %q for %s: %v", value, origArg, err)
+	}
+	// mark as visited for Visit()
+	if f.actual == nil {
+		f.actual = make(map[NormalizedName]*Flag)
+	}
+	f.actual[f.normalizeFlagName(flag.Name)] = flag
+	flag.Changed = true
+	if len(flag.Deprecated) > 0 {
+		fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
+	}
+	if len(flag.ShorthandDeprecated) > 0 && containsShorthand(origArg, flag.Shorthand) {
+		fmt.Fprintf(os.Stderr, "Flag shorthand -%s has been deprecated, %s\n", flag.Shorthand, flag.ShorthandDeprecated)
+	}
+	return nil
+}
+
+func containsShorthand(arg, shorthand string) bool {
+	// filter out flags --<flag_name>
+	if strings.HasPrefix(arg, "-") {
+		return false
+	}
+	arg = strings.SplitN(arg, "=", 2)[0]
+	return strings.Contains(arg, shorthand)
+}
+
+func (f *FlagSet) parseLongArg(s string, args []string) (a []string, err error) {
+	a = args
+	name := s[2:]
+	if len(name) == 0 || name[0] == '-' || name[0] == '=' {
+		err = f.failf("bad flag syntax: %s", s)
+		return
+	}
+	split := strings.SplitN(name, "=", 2)
+	name = split[0]
+	flag, alreadythere := f.formal[f.normalizeFlagName(name)]
+	if !alreadythere {
+		if name == "help" { // special case for nice help message.
+			f.usage()
+			return a, ErrHelp
+		}
+		err = f.failf("unknown flag: --%s", name)
+		return
+	}
+	var value string
+	if len(split) == 2 {
+		// '--flag=arg'
+		value = split[1]
+	} else if len(flag.NoOptDefVal) > 0 {
+		// '--flag' (arg was optional)
+		value = flag.NoOptDefVal
+	} else if len(a) > 0 {
+		// '--flag arg'
+		value = a[0]
+		a = a[1:]
+	} else {
+		// '--flag' (arg was required)
+		err = f.failf("flag needs an argument: %s", s)
+		return
+	}
+	err = f.setFlag(flag, value, s)
+	return
+}
+
+func (f *FlagSet) parseSingleShortArg(shorthands string, args []string) (outShorts string, outArgs []string, err error) {
+	if strings.HasPrefix(shorthands, "test.") {
+		return
+	}
+	outArgs = args
+	outShorts = shorthands[1:]
+	c := shorthands[0]
+
+	flag, alreadythere := f.shorthands[c]
+	if !alreadythere {
+		if c == 'h' { // special case for nice help message.
+			f.usage()
+			err = ErrHelp
+			return
+		}
+		//TODO continue on error
+		err = f.failf("unknown shorthand flag: %q in -%s", c, shorthands)
+		return
+	}
+	var value string
+	if len(shorthands) > 2 && shorthands[1] == '=' {
+		value = shorthands[2:]
+		outShorts = ""
+	} else if len(flag.NoOptDefVal) > 0 {
+		value = flag.NoOptDefVal
+	} else if len(shorthands) > 1 {
+		value = shorthands[1:]
+		outShorts = ""
+	} else if len(args) > 0 {
+		value = args[0]
+		outArgs = args[1:]
+	} else {
+		err = f.failf("flag needs an argument: %q in -%s", c, shorthands)
+		return
+	}
+	err = f.setFlag(flag, value, shorthands)
+	return
+}
+
+func (f *FlagSet) parseShortArg(s string, args []string) (a []string, err error) {
+	a = args
+	shorthands := s[1:]
+
+	for len(shorthands) > 0 {
+		shorthands, a, err = f.parseSingleShortArg(shorthands, args)
+		if err != nil {
+			return
+		}
+	}
+
+	return
+}
+
+func (f *FlagSet) parseArgs(args []string) (err error) {
+	for len(args) > 0 {
+		s := args[0]
+		args = args[1:]
+		if len(s) == 0 || s[0] != '-' || len(s) == 1 {
+			if !f.interspersed {
+				f.args = append(f.args, s)
+				f.args = append(f.args, args...)
+				return nil
+			}
+			f.args = append(f.args, s)
+			continue
+		}
+
+		if s[1] == '-' {
+			if len(s) == 2 { // "--" terminates the flags
+				f.argsLenAtDash = len(f.args)
+				f.args = append(f.args, args...)
+				break
+			}
+			args, err = f.parseLongArg(s, args)
+		} else {
+			args, err = f.parseShortArg(s, args)
+		}
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+// Parse parses flag definitions from the argument list, which should not
+// include the command name.  Must be called after all flags in the FlagSet
+// are defined and before flags are accessed by the program.
+// The return value will be ErrHelp if -help was set but not defined.
+func (f *FlagSet) Parse(arguments []string) error {
+	f.parsed = true
+	f.args = make([]string, 0, len(arguments))
+	err := f.parseArgs(arguments)
+	if err != nil {
+		switch f.errorHandling {
+		case ContinueOnError:
+			return err
+		case ExitOnError:
+			os.Exit(2)
+		case PanicOnError:
+			panic(err)
+		}
+	}
+	return nil
+}
+
+// Parsed reports whether f.Parse has been called.
+func (f *FlagSet) Parsed() bool {
+	return f.parsed
+}
+
+// Parse parses the command-line flags from os.Args[1:].  Must be called
+// after all flags are defined and before flags are accessed by the program.
+func Parse() {
+	// Ignore errors; CommandLine is set for ExitOnError.
+	CommandLine.Parse(os.Args[1:])
+}
+
+// SetInterspersed sets whether to support interspersed option/non-option arguments.
+func SetInterspersed(interspersed bool) {
+	CommandLine.SetInterspersed(interspersed)
+}
+
+// Parsed returns true if the command-line flags have been parsed.
+func Parsed() bool {
+	return CommandLine.Parsed()
+}
+
+// CommandLine is the default set of command-line flags, parsed from os.Args.
+var CommandLine = NewFlagSet(os.Args[0], ExitOnError)
+
+// NewFlagSet returns a new, empty flag set with the specified name and
+// error handling property.
+func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet {
+	f := &FlagSet{
+		name:          name,
+		errorHandling: errorHandling,
+		argsLenAtDash: -1,
+		interspersed:  true,
+	}
+	return f
+}
+
+// SetInterspersed sets whether to support interspersed option/non-option arguments.
+func (f *FlagSet) SetInterspersed(interspersed bool) {
+	f.interspersed = interspersed
+}
+
+// Init sets the name and error handling property for a flag set.
+// By default, the zero FlagSet uses an empty name and the
+// ContinueOnError error handling policy.
+func (f *FlagSet) Init(name string, errorHandling ErrorHandling) {
+	f.name = name
+	f.errorHandling = errorHandling
+	f.argsLenAtDash = -1
+}
diff --git a/vendor/github.com/spf13/pflag/float32.go b/vendor/github.com/spf13/pflag/float32.go
new file mode 100644
index 0000000..7683fae
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/float32.go
@@ -0,0 +1,91 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- float32 Value
+type float32Value float32
+
+func newFloat32Value(val float32, p *float32) *float32Value {
+	*p = val
+	return (*float32Value)(p)
+}
+
+func (f *float32Value) Set(s string) error {
+	v, err := strconv.ParseFloat(s, 32)
+	*f = float32Value(v)
+	return err
+}
+
+func (f *float32Value) Type() string {
+	return "float32"
+}
+
+func (f *float32Value) String() string { return fmt.Sprintf("%v", *f) }
+
+func float32Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseFloat(sval, 32)
+	if err != nil {
+		return 0, err
+	}
+	return float32(v), nil
+}
+
+// GetFloat32 return the float32 value of a flag with the given name
+func (f *FlagSet) GetFloat32(name string) (float32, error) {
+	val, err := f.getFlagType(name, "float32", float32Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(float32), nil
+}
+
+// Float32Var defines a float32 flag with specified name, default value, and usage string.
+// The argument p points to a float32 variable in which to store the value of the flag.
+func (f *FlagSet) Float32Var(p *float32, name string, value float32, usage string) {
+	f.VarP(newFloat32Value(value, p), name, "", usage)
+}
+
+// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
+	f.VarP(newFloat32Value(value, p), name, shorthand, usage)
+}
+
+// Float32Var defines a float32 flag with specified name, default value, and usage string.
+// The argument p points to a float32 variable in which to store the value of the flag.
+func Float32Var(p *float32, name string, value float32, usage string) {
+	CommandLine.VarP(newFloat32Value(value, p), name, "", usage)
+}
+
+// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
+func Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
+	CommandLine.VarP(newFloat32Value(value, p), name, shorthand, usage)
+}
+
+// Float32 defines a float32 flag with specified name, default value, and usage string.
+// The return value is the address of a float32 variable that stores the value of the flag.
+func (f *FlagSet) Float32(name string, value float32, usage string) *float32 {
+	p := new(float32)
+	f.Float32VarP(p, name, "", value, usage)
+	return p
+}
+
+// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float32P(name, shorthand string, value float32, usage string) *float32 {
+	p := new(float32)
+	f.Float32VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Float32 defines a float32 flag with specified name, default value, and usage string.
+// The return value is the address of a float32 variable that stores the value of the flag.
+func Float32(name string, value float32, usage string) *float32 {
+	return CommandLine.Float32P(name, "", value, usage)
+}
+
+// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
+func Float32P(name, shorthand string, value float32, usage string) *float32 {
+	return CommandLine.Float32P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/float64.go b/vendor/github.com/spf13/pflag/float64.go
new file mode 100644
index 0000000..50fbf8c
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/float64.go
@@ -0,0 +1,87 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- float64 Value
+type float64Value float64
+
+func newFloat64Value(val float64, p *float64) *float64Value {
+	*p = val
+	return (*float64Value)(p)
+}
+
+func (f *float64Value) Set(s string) error {
+	v, err := strconv.ParseFloat(s, 64)
+	*f = float64Value(v)
+	return err
+}
+
+func (f *float64Value) Type() string {
+	return "float64"
+}
+
+func (f *float64Value) String() string { return fmt.Sprintf("%v", *f) }
+
+func float64Conv(sval string) (interface{}, error) {
+	return strconv.ParseFloat(sval, 64)
+}
+
+// GetFloat64 return the float64 value of a flag with the given name
+func (f *FlagSet) GetFloat64(name string) (float64, error) {
+	val, err := f.getFlagType(name, "float64", float64Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(float64), nil
+}
+
+// Float64Var defines a float64 flag with specified name, default value, and usage string.
+// The argument p points to a float64 variable in which to store the value of the flag.
+func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) {
+	f.VarP(newFloat64Value(value, p), name, "", usage)
+}
+
+// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
+	f.VarP(newFloat64Value(value, p), name, shorthand, usage)
+}
+
+// Float64Var defines a float64 flag with specified name, default value, and usage string.
+// The argument p points to a float64 variable in which to store the value of the flag.
+func Float64Var(p *float64, name string, value float64, usage string) {
+	CommandLine.VarP(newFloat64Value(value, p), name, "", usage)
+}
+
+// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
+func Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
+	CommandLine.VarP(newFloat64Value(value, p), name, shorthand, usage)
+}
+
+// Float64 defines a float64 flag with specified name, default value, and usage string.
+// The return value is the address of a float64 variable that stores the value of the flag.
+func (f *FlagSet) Float64(name string, value float64, usage string) *float64 {
+	p := new(float64)
+	f.Float64VarP(p, name, "", value, usage)
+	return p
+}
+
+// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float64P(name, shorthand string, value float64, usage string) *float64 {
+	p := new(float64)
+	f.Float64VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Float64 defines a float64 flag with specified name, default value, and usage string.
+// The return value is the address of a float64 variable that stores the value of the flag.
+func Float64(name string, value float64, usage string) *float64 {
+	return CommandLine.Float64P(name, "", value, usage)
+}
+
+// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
+func Float64P(name, shorthand string, value float64, usage string) *float64 {
+	return CommandLine.Float64P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/golangflag.go b/vendor/github.com/spf13/pflag/golangflag.go
new file mode 100644
index 0000000..b056147
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/golangflag.go
@@ -0,0 +1,104 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package pflag
+
+import (
+	goflag "flag"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+var _ = fmt.Print
+
+// flagValueWrapper implements pflag.Value around a flag.Value.  The main
+// difference here is the addition of the Type method that returns a string
+// name of the type.  As this is generally unknown, we approximate that with
+// reflection.
+type flagValueWrapper struct {
+	inner    goflag.Value
+	flagType string
+}
+
+// We are just copying the boolFlag interface out of goflag as that is what
+// they use to decide if a flag should get "true" when no arg is given.
+type goBoolFlag interface {
+	goflag.Value
+	IsBoolFlag() bool
+}
+
+func wrapFlagValue(v goflag.Value) Value {
+	// If the flag.Value happens to also be a pflag.Value, just use it directly.
+	if pv, ok := v.(Value); ok {
+		return pv
+	}
+
+	pv := &flagValueWrapper{
+		inner: v,
+	}
+
+	t := reflect.TypeOf(v)
+	if t.Kind() == reflect.Interface || t.Kind() == reflect.Ptr {
+		t = t.Elem()
+	}
+
+	pv.flagType = strings.TrimSuffix(t.Name(), "Value")
+	return pv
+}
+
+func (v *flagValueWrapper) String() string {
+	return v.inner.String()
+}
+
+func (v *flagValueWrapper) Set(s string) error {
+	return v.inner.Set(s)
+}
+
+func (v *flagValueWrapper) Type() string {
+	return v.flagType
+}
+
+// PFlagFromGoFlag will return a *pflag.Flag given a *flag.Flag
+// If the *flag.Flag.Name was a single character (ex: `v`) it will be accessiblei
+// with both `-v` and `--v` in flags. If the golang flag was more than a single
+// character (ex: `verbose`) it will only be accessible via `--verbose`
+func PFlagFromGoFlag(goflag *goflag.Flag) *Flag {
+	// Remember the default value as a string; it won't change.
+	flag := &Flag{
+		Name:  goflag.Name,
+		Usage: goflag.Usage,
+		Value: wrapFlagValue(goflag.Value),
+		// Looks like golang flags don't set DefValue correctly  :-(
+		//DefValue: goflag.DefValue,
+		DefValue: goflag.Value.String(),
+	}
+	// Ex: if the golang flag was -v, allow both -v and --v to work
+	if len(flag.Name) == 1 {
+		flag.Shorthand = flag.Name
+	}
+	if fv, ok := goflag.Value.(goBoolFlag); ok && fv.IsBoolFlag() {
+		flag.NoOptDefVal = "true"
+	}
+	return flag
+}
+
+// AddGoFlag will add the given *flag.Flag to the pflag.FlagSet
+func (f *FlagSet) AddGoFlag(goflag *goflag.Flag) {
+	if f.Lookup(goflag.Name) != nil {
+		return
+	}
+	newflag := PFlagFromGoFlag(goflag)
+	f.AddFlag(newflag)
+}
+
+// AddGoFlagSet will add the given *flag.FlagSet to the pflag.FlagSet
+func (f *FlagSet) AddGoFlagSet(newSet *goflag.FlagSet) {
+	if newSet == nil {
+		return
+	}
+	newSet.VisitAll(func(goflag *goflag.Flag) {
+		f.AddGoFlag(goflag)
+	})
+}
diff --git a/vendor/github.com/spf13/pflag/int.go b/vendor/github.com/spf13/pflag/int.go
new file mode 100644
index 0000000..b656036
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/int.go
@@ -0,0 +1,87 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- int Value
+type intValue int
+
+func newIntValue(val int, p *int) *intValue {
+	*p = val
+	return (*intValue)(p)
+}
+
+func (i *intValue) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	*i = intValue(v)
+	return err
+}
+
+func (i *intValue) Type() string {
+	return "int"
+}
+
+func (i *intValue) String() string { return fmt.Sprintf("%v", *i) }
+
+func intConv(sval string) (interface{}, error) {
+	return strconv.Atoi(sval)
+}
+
+// GetInt return the int value of a flag with the given name
+func (f *FlagSet) GetInt(name string) (int, error) {
+	val, err := f.getFlagType(name, "int", intConv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int), nil
+}
+
+// IntVar defines an int flag with specified name, default value, and usage string.
+// The argument p points to an int variable in which to store the value of the flag.
+func (f *FlagSet) IntVar(p *int, name string, value int, usage string) {
+	f.VarP(newIntValue(value, p), name, "", usage)
+}
+
+// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IntVarP(p *int, name, shorthand string, value int, usage string) {
+	f.VarP(newIntValue(value, p), name, shorthand, usage)
+}
+
+// IntVar defines an int flag with specified name, default value, and usage string.
+// The argument p points to an int variable in which to store the value of the flag.
+func IntVar(p *int, name string, value int, usage string) {
+	CommandLine.VarP(newIntValue(value, p), name, "", usage)
+}
+
+// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash.
+func IntVarP(p *int, name, shorthand string, value int, usage string) {
+	CommandLine.VarP(newIntValue(value, p), name, shorthand, usage)
+}
+
+// Int defines an int flag with specified name, default value, and usage string.
+// The return value is the address of an int variable that stores the value of the flag.
+func (f *FlagSet) Int(name string, value int, usage string) *int {
+	p := new(int)
+	f.IntVarP(p, name, "", value, usage)
+	return p
+}
+
+// IntP is like Int, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IntP(name, shorthand string, value int, usage string) *int {
+	p := new(int)
+	f.IntVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Int defines an int flag with specified name, default value, and usage string.
+// The return value is the address of an int variable that stores the value of the flag.
+func Int(name string, value int, usage string) *int {
+	return CommandLine.IntP(name, "", value, usage)
+}
+
+// IntP is like Int, but accepts a shorthand letter that can be used after a single dash.
+func IntP(name, shorthand string, value int, usage string) *int {
+	return CommandLine.IntP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/int32.go b/vendor/github.com/spf13/pflag/int32.go
new file mode 100644
index 0000000..41659a9
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/int32.go
@@ -0,0 +1,91 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- int32 Value
+type int32Value int32
+
+func newInt32Value(val int32, p *int32) *int32Value {
+	*p = val
+	return (*int32Value)(p)
+}
+
+func (i *int32Value) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 32)
+	*i = int32Value(v)
+	return err
+}
+
+func (i *int32Value) Type() string {
+	return "int32"
+}
+
+func (i *int32Value) String() string { return fmt.Sprintf("%v", *i) }
+
+func int32Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseInt(sval, 0, 32)
+	if err != nil {
+		return 0, err
+	}
+	return int32(v), nil
+}
+
+// GetInt32 return the int32 value of a flag with the given name
+func (f *FlagSet) GetInt32(name string) (int32, error) {
+	val, err := f.getFlagType(name, "int32", int32Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int32), nil
+}
+
+// Int32Var defines an int32 flag with specified name, default value, and usage string.
+// The argument p points to an int32 variable in which to store the value of the flag.
+func (f *FlagSet) Int32Var(p *int32, name string, value int32, usage string) {
+	f.VarP(newInt32Value(value, p), name, "", usage)
+}
+
+// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int32VarP(p *int32, name, shorthand string, value int32, usage string) {
+	f.VarP(newInt32Value(value, p), name, shorthand, usage)
+}
+
+// Int32Var defines an int32 flag with specified name, default value, and usage string.
+// The argument p points to an int32 variable in which to store the value of the flag.
+func Int32Var(p *int32, name string, value int32, usage string) {
+	CommandLine.VarP(newInt32Value(value, p), name, "", usage)
+}
+
+// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash.
+func Int32VarP(p *int32, name, shorthand string, value int32, usage string) {
+	CommandLine.VarP(newInt32Value(value, p), name, shorthand, usage)
+}
+
+// Int32 defines an int32 flag with specified name, default value, and usage string.
+// The return value is the address of an int32 variable that stores the value of the flag.
+func (f *FlagSet) Int32(name string, value int32, usage string) *int32 {
+	p := new(int32)
+	f.Int32VarP(p, name, "", value, usage)
+	return p
+}
+
+// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int32P(name, shorthand string, value int32, usage string) *int32 {
+	p := new(int32)
+	f.Int32VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Int32 defines an int32 flag with specified name, default value, and usage string.
+// The return value is the address of an int32 variable that stores the value of the flag.
+func Int32(name string, value int32, usage string) *int32 {
+	return CommandLine.Int32P(name, "", value, usage)
+}
+
+// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash.
+func Int32P(name, shorthand string, value int32, usage string) *int32 {
+	return CommandLine.Int32P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/int64.go b/vendor/github.com/spf13/pflag/int64.go
new file mode 100644
index 0000000..6e67e38
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/int64.go
@@ -0,0 +1,87 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- int64 Value
+type int64Value int64
+
+func newInt64Value(val int64, p *int64) *int64Value {
+	*p = val
+	return (*int64Value)(p)
+}
+
+func (i *int64Value) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	*i = int64Value(v)
+	return err
+}
+
+func (i *int64Value) Type() string {
+	return "int64"
+}
+
+func (i *int64Value) String() string { return fmt.Sprintf("%v", *i) }
+
+func int64Conv(sval string) (interface{}, error) {
+	return strconv.ParseInt(sval, 0, 64)
+}
+
+// GetInt64 return the int64 value of a flag with the given name
+func (f *FlagSet) GetInt64(name string) (int64, error) {
+	val, err := f.getFlagType(name, "int64", int64Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int64), nil
+}
+
+// Int64Var defines an int64 flag with specified name, default value, and usage string.
+// The argument p points to an int64 variable in which to store the value of the flag.
+func (f *FlagSet) Int64Var(p *int64, name string, value int64, usage string) {
+	f.VarP(newInt64Value(value, p), name, "", usage)
+}
+
+// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int64VarP(p *int64, name, shorthand string, value int64, usage string) {
+	f.VarP(newInt64Value(value, p), name, shorthand, usage)
+}
+
+// Int64Var defines an int64 flag with specified name, default value, and usage string.
+// The argument p points to an int64 variable in which to store the value of the flag.
+func Int64Var(p *int64, name string, value int64, usage string) {
+	CommandLine.VarP(newInt64Value(value, p), name, "", usage)
+}
+
+// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash.
+func Int64VarP(p *int64, name, shorthand string, value int64, usage string) {
+	CommandLine.VarP(newInt64Value(value, p), name, shorthand, usage)
+}
+
+// Int64 defines an int64 flag with specified name, default value, and usage string.
+// The return value is the address of an int64 variable that stores the value of the flag.
+func (f *FlagSet) Int64(name string, value int64, usage string) *int64 {
+	p := new(int64)
+	f.Int64VarP(p, name, "", value, usage)
+	return p
+}
+
+// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int64P(name, shorthand string, value int64, usage string) *int64 {
+	p := new(int64)
+	f.Int64VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Int64 defines an int64 flag with specified name, default value, and usage string.
+// The return value is the address of an int64 variable that stores the value of the flag.
+func Int64(name string, value int64, usage string) *int64 {
+	return CommandLine.Int64P(name, "", value, usage)
+}
+
+// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash.
+func Int64P(name, shorthand string, value int64, usage string) *int64 {
+	return CommandLine.Int64P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/int8.go b/vendor/github.com/spf13/pflag/int8.go
new file mode 100644
index 0000000..400db21
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/int8.go
@@ -0,0 +1,91 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- int8 Value
+type int8Value int8
+
+func newInt8Value(val int8, p *int8) *int8Value {
+	*p = val
+	return (*int8Value)(p)
+}
+
+func (i *int8Value) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 8)
+	*i = int8Value(v)
+	return err
+}
+
+func (i *int8Value) Type() string {
+	return "int8"
+}
+
+func (i *int8Value) String() string { return fmt.Sprintf("%v", *i) }
+
+func int8Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseInt(sval, 0, 8)
+	if err != nil {
+		return 0, err
+	}
+	return int8(v), nil
+}
+
+// GetInt8 return the int8 value of a flag with the given name
+func (f *FlagSet) GetInt8(name string) (int8, error) {
+	val, err := f.getFlagType(name, "int8", int8Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int8), nil
+}
+
+// Int8Var defines an int8 flag with specified name, default value, and usage string.
+// The argument p points to an int8 variable in which to store the value of the flag.
+func (f *FlagSet) Int8Var(p *int8, name string, value int8, usage string) {
+	f.VarP(newInt8Value(value, p), name, "", usage)
+}
+
+// Int8VarP is like Int8Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int8VarP(p *int8, name, shorthand string, value int8, usage string) {
+	f.VarP(newInt8Value(value, p), name, shorthand, usage)
+}
+
+// Int8Var defines an int8 flag with specified name, default value, and usage string.
+// The argument p points to an int8 variable in which to store the value of the flag.
+func Int8Var(p *int8, name string, value int8, usage string) {
+	CommandLine.VarP(newInt8Value(value, p), name, "", usage)
+}
+
+// Int8VarP is like Int8Var, but accepts a shorthand letter that can be used after a single dash.
+func Int8VarP(p *int8, name, shorthand string, value int8, usage string) {
+	CommandLine.VarP(newInt8Value(value, p), name, shorthand, usage)
+}
+
+// Int8 defines an int8 flag with specified name, default value, and usage string.
+// The return value is the address of an int8 variable that stores the value of the flag.
+func (f *FlagSet) Int8(name string, value int8, usage string) *int8 {
+	p := new(int8)
+	f.Int8VarP(p, name, "", value, usage)
+	return p
+}
+
+// Int8P is like Int8, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int8P(name, shorthand string, value int8, usage string) *int8 {
+	p := new(int8)
+	f.Int8VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Int8 defines an int8 flag with specified name, default value, and usage string.
+// The return value is the address of an int8 variable that stores the value of the flag.
+func Int8(name string, value int8, usage string) *int8 {
+	return CommandLine.Int8P(name, "", value, usage)
+}
+
+// Int8P is like Int8, but accepts a shorthand letter that can be used after a single dash.
+func Int8P(name, shorthand string, value int8, usage string) *int8 {
+	return CommandLine.Int8P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/int_slice.go b/vendor/github.com/spf13/pflag/int_slice.go
new file mode 100644
index 0000000..1e7c9ed
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/int_slice.go
@@ -0,0 +1,128 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- intSlice Value
+type intSliceValue struct {
+	value   *[]int
+	changed bool
+}
+
+func newIntSliceValue(val []int, p *[]int) *intSliceValue {
+	isv := new(intSliceValue)
+	isv.value = p
+	*isv.value = val
+	return isv
+}
+
+func (s *intSliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]int, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.Atoi(d)
+		if err != nil {
+			return err
+		}
+
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *intSliceValue) Type() string {
+	return "intSlice"
+}
+
+func (s *intSliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%d", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func intSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []int{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]int, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.Atoi(d)
+		if err != nil {
+			return nil, err
+		}
+
+	}
+	return out, nil
+}
+
+// GetIntSlice return the []int value of a flag with the given name
+func (f *FlagSet) GetIntSlice(name string) ([]int, error) {
+	val, err := f.getFlagType(name, "intSlice", intSliceConv)
+	if err != nil {
+		return []int{}, err
+	}
+	return val.([]int), nil
+}
+
+// IntSliceVar defines a intSlice flag with specified name, default value, and usage string.
+// The argument p points to a []int variable in which to store the value of the flag.
+func (f *FlagSet) IntSliceVar(p *[]int, name string, value []int, usage string) {
+	f.VarP(newIntSliceValue(value, p), name, "", usage)
+}
+
+// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
+	f.VarP(newIntSliceValue(value, p), name, shorthand, usage)
+}
+
+// IntSliceVar defines a int[] flag with specified name, default value, and usage string.
+// The argument p points to a int[] variable in which to store the value of the flag.
+func IntSliceVar(p *[]int, name string, value []int, usage string) {
+	CommandLine.VarP(newIntSliceValue(value, p), name, "", usage)
+}
+
+// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
+	CommandLine.VarP(newIntSliceValue(value, p), name, shorthand, usage)
+}
+
+// IntSlice defines a []int flag with specified name, default value, and usage string.
+// The return value is the address of a []int variable that stores the value of the flag.
+func (f *FlagSet) IntSlice(name string, value []int, usage string) *[]int {
+	p := []int{}
+	f.IntSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IntSliceP(name, shorthand string, value []int, usage string) *[]int {
+	p := []int{}
+	f.IntSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// IntSlice defines a []int flag with specified name, default value, and usage string.
+// The return value is the address of a []int variable that stores the value of the flag.
+func IntSlice(name string, value []int, usage string) *[]int {
+	return CommandLine.IntSliceP(name, "", value, usage)
+}
+
+// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
+func IntSliceP(name, shorthand string, value []int, usage string) *[]int {
+	return CommandLine.IntSliceP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/ip.go b/vendor/github.com/spf13/pflag/ip.go
new file mode 100644
index 0000000..88a1743
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/ip.go
@@ -0,0 +1,96 @@
+package pflag
+
+import (
+	"fmt"
+	"net"
+	"strings"
+)
+
+var _ = strings.TrimSpace
+
+// -- net.IP value
+type ipValue net.IP
+
+func newIPValue(val net.IP, p *net.IP) *ipValue {
+	*p = val
+	return (*ipValue)(p)
+}
+
+func (i *ipValue) String() string { return net.IP(*i).String() }
+func (i *ipValue) Set(s string) error {
+	ip := net.ParseIP(strings.TrimSpace(s))
+	if ip == nil {
+		return fmt.Errorf("failed to parse IP: %q", s)
+	}
+	*i = ipValue(ip)
+	return nil
+}
+
+func (i *ipValue) Type() string {
+	return "ip"
+}
+
+func ipConv(sval string) (interface{}, error) {
+	ip := net.ParseIP(sval)
+	if ip != nil {
+		return ip, nil
+	}
+	return nil, fmt.Errorf("invalid string being converted to IP address: %s", sval)
+}
+
+// GetIP return the net.IP value of a flag with the given name
+func (f *FlagSet) GetIP(name string) (net.IP, error) {
+	val, err := f.getFlagType(name, "ip", ipConv)
+	if err != nil {
+		return nil, err
+	}
+	return val.(net.IP), nil
+}
+
+// IPVar defines an net.IP flag with specified name, default value, and usage string.
+// The argument p points to an net.IP variable in which to store the value of the flag.
+func (f *FlagSet) IPVar(p *net.IP, name string, value net.IP, usage string) {
+	f.VarP(newIPValue(value, p), name, "", usage)
+}
+
+// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) {
+	f.VarP(newIPValue(value, p), name, shorthand, usage)
+}
+
+// IPVar defines an net.IP flag with specified name, default value, and usage string.
+// The argument p points to an net.IP variable in which to store the value of the flag.
+func IPVar(p *net.IP, name string, value net.IP, usage string) {
+	CommandLine.VarP(newIPValue(value, p), name, "", usage)
+}
+
+// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash.
+func IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) {
+	CommandLine.VarP(newIPValue(value, p), name, shorthand, usage)
+}
+
+// IP defines an net.IP flag with specified name, default value, and usage string.
+// The return value is the address of an net.IP variable that stores the value of the flag.
+func (f *FlagSet) IP(name string, value net.IP, usage string) *net.IP {
+	p := new(net.IP)
+	f.IPVarP(p, name, "", value, usage)
+	return p
+}
+
+// IPP is like IP, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPP(name, shorthand string, value net.IP, usage string) *net.IP {
+	p := new(net.IP)
+	f.IPVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// IP defines an net.IP flag with specified name, default value, and usage string.
+// The return value is the address of an net.IP variable that stores the value of the flag.
+func IP(name string, value net.IP, usage string) *net.IP {
+	return CommandLine.IPP(name, "", value, usage)
+}
+
+// IPP is like IP, but accepts a shorthand letter that can be used after a single dash.
+func IPP(name, shorthand string, value net.IP, usage string) *net.IP {
+	return CommandLine.IPP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/ipmask.go b/vendor/github.com/spf13/pflag/ipmask.go
new file mode 100644
index 0000000..5bd44bd
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/ipmask.go
@@ -0,0 +1,122 @@
+package pflag
+
+import (
+	"fmt"
+	"net"
+	"strconv"
+)
+
+// -- net.IPMask value
+type ipMaskValue net.IPMask
+
+func newIPMaskValue(val net.IPMask, p *net.IPMask) *ipMaskValue {
+	*p = val
+	return (*ipMaskValue)(p)
+}
+
+func (i *ipMaskValue) String() string { return net.IPMask(*i).String() }
+func (i *ipMaskValue) Set(s string) error {
+	ip := ParseIPv4Mask(s)
+	if ip == nil {
+		return fmt.Errorf("failed to parse IP mask: %q", s)
+	}
+	*i = ipMaskValue(ip)
+	return nil
+}
+
+func (i *ipMaskValue) Type() string {
+	return "ipMask"
+}
+
+// ParseIPv4Mask written in IP form (e.g. 255.255.255.0).
+// This function should really belong to the net package.
+func ParseIPv4Mask(s string) net.IPMask {
+	mask := net.ParseIP(s)
+	if mask == nil {
+		if len(s) != 8 {
+			return nil
+		}
+		// net.IPMask.String() actually outputs things like ffffff00
+		// so write a horrible parser for that as well  :-(
+		m := []int{}
+		for i := 0; i < 4; i++ {
+			b := "0x" + s[2*i:2*i+2]
+			d, err := strconv.ParseInt(b, 0, 0)
+			if err != nil {
+				return nil
+			}
+			m = append(m, int(d))
+		}
+		s := fmt.Sprintf("%d.%d.%d.%d", m[0], m[1], m[2], m[3])
+		mask = net.ParseIP(s)
+		if mask == nil {
+			return nil
+		}
+	}
+	return net.IPv4Mask(mask[12], mask[13], mask[14], mask[15])
+}
+
+func parseIPv4Mask(sval string) (interface{}, error) {
+	mask := ParseIPv4Mask(sval)
+	if mask == nil {
+		return nil, fmt.Errorf("unable to parse %s as net.IPMask", sval)
+	}
+	return mask, nil
+}
+
+// GetIPv4Mask return the net.IPv4Mask value of a flag with the given name
+func (f *FlagSet) GetIPv4Mask(name string) (net.IPMask, error) {
+	val, err := f.getFlagType(name, "ipMask", parseIPv4Mask)
+	if err != nil {
+		return nil, err
+	}
+	return val.(net.IPMask), nil
+}
+
+// IPMaskVar defines an net.IPMask flag with specified name, default value, and usage string.
+// The argument p points to an net.IPMask variable in which to store the value of the flag.
+func (f *FlagSet) IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) {
+	f.VarP(newIPMaskValue(value, p), name, "", usage)
+}
+
+// IPMaskVarP is like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) {
+	f.VarP(newIPMaskValue(value, p), name, shorthand, usage)
+}
+
+// IPMaskVar defines an net.IPMask flag with specified name, default value, and usage string.
+// The argument p points to an net.IPMask variable in which to store the value of the flag.
+func IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) {
+	CommandLine.VarP(newIPMaskValue(value, p), name, "", usage)
+}
+
+// IPMaskVarP is like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
+func IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) {
+	CommandLine.VarP(newIPMaskValue(value, p), name, shorthand, usage)
+}
+
+// IPMask defines an net.IPMask flag with specified name, default value, and usage string.
+// The return value is the address of an net.IPMask variable that stores the value of the flag.
+func (f *FlagSet) IPMask(name string, value net.IPMask, usage string) *net.IPMask {
+	p := new(net.IPMask)
+	f.IPMaskVarP(p, name, "", value, usage)
+	return p
+}
+
+// IPMaskP is like IPMask, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask {
+	p := new(net.IPMask)
+	f.IPMaskVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// IPMask defines an net.IPMask flag with specified name, default value, and usage string.
+// The return value is the address of an net.IPMask variable that stores the value of the flag.
+func IPMask(name string, value net.IPMask, usage string) *net.IPMask {
+	return CommandLine.IPMaskP(name, "", value, usage)
+}
+
+// IPMaskP is like IP, but accepts a shorthand letter that can be used after a single dash.
+func IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask {
+	return CommandLine.IPMaskP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/ipnet.go b/vendor/github.com/spf13/pflag/ipnet.go
new file mode 100644
index 0000000..149b764
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/ipnet.go
@@ -0,0 +1,100 @@
+package pflag
+
+import (
+	"fmt"
+	"net"
+	"strings"
+)
+
+// IPNet adapts net.IPNet for use as a flag.
+type ipNetValue net.IPNet
+
+func (ipnet ipNetValue) String() string {
+	n := net.IPNet(ipnet)
+	return n.String()
+}
+
+func (ipnet *ipNetValue) Set(value string) error {
+	_, n, err := net.ParseCIDR(strings.TrimSpace(value))
+	if err != nil {
+		return err
+	}
+	*ipnet = ipNetValue(*n)
+	return nil
+}
+
+func (*ipNetValue) Type() string {
+	return "ipNet"
+}
+
+var _ = strings.TrimSpace
+
+func newIPNetValue(val net.IPNet, p *net.IPNet) *ipNetValue {
+	*p = val
+	return (*ipNetValue)(p)
+}
+
+func ipNetConv(sval string) (interface{}, error) {
+	_, n, err := net.ParseCIDR(strings.TrimSpace(sval))
+	if err == nil {
+		return *n, nil
+	}
+	return nil, fmt.Errorf("invalid string being converted to IPNet: %s", sval)
+}
+
+// GetIPNet return the net.IPNet value of a flag with the given name
+func (f *FlagSet) GetIPNet(name string) (net.IPNet, error) {
+	val, err := f.getFlagType(name, "ipNet", ipNetConv)
+	if err != nil {
+		return net.IPNet{}, err
+	}
+	return val.(net.IPNet), nil
+}
+
+// IPNetVar defines an net.IPNet flag with specified name, default value, and usage string.
+// The argument p points to an net.IPNet variable in which to store the value of the flag.
+func (f *FlagSet) IPNetVar(p *net.IPNet, name string, value net.IPNet, usage string) {
+	f.VarP(newIPNetValue(value, p), name, "", usage)
+}
+
+// IPNetVarP is like IPNetVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPNetVarP(p *net.IPNet, name, shorthand string, value net.IPNet, usage string) {
+	f.VarP(newIPNetValue(value, p), name, shorthand, usage)
+}
+
+// IPNetVar defines an net.IPNet flag with specified name, default value, and usage string.
+// The argument p points to an net.IPNet variable in which to store the value of the flag.
+func IPNetVar(p *net.IPNet, name string, value net.IPNet, usage string) {
+	CommandLine.VarP(newIPNetValue(value, p), name, "", usage)
+}
+
+// IPNetVarP is like IPNetVar, but accepts a shorthand letter that can be used after a single dash.
+func IPNetVarP(p *net.IPNet, name, shorthand string, value net.IPNet, usage string) {
+	CommandLine.VarP(newIPNetValue(value, p), name, shorthand, usage)
+}
+
+// IPNet defines an net.IPNet flag with specified name, default value, and usage string.
+// The return value is the address of an net.IPNet variable that stores the value of the flag.
+func (f *FlagSet) IPNet(name string, value net.IPNet, usage string) *net.IPNet {
+	p := new(net.IPNet)
+	f.IPNetVarP(p, name, "", value, usage)
+	return p
+}
+
+// IPNetP is like IPNet, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPNetP(name, shorthand string, value net.IPNet, usage string) *net.IPNet {
+	p := new(net.IPNet)
+	f.IPNetVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// IPNet defines an net.IPNet flag with specified name, default value, and usage string.
+// The return value is the address of an net.IPNet variable that stores the value of the flag.
+func IPNet(name string, value net.IPNet, usage string) *net.IPNet {
+	return CommandLine.IPNetP(name, "", value, usage)
+}
+
+// IPNetP is like IPNet, but accepts a shorthand letter that can be used after a single dash.
+func IPNetP(name, shorthand string, value net.IPNet, usage string) *net.IPNet {
+	return CommandLine.IPNetP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/string.go b/vendor/github.com/spf13/pflag/string.go
new file mode 100644
index 0000000..e296136
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/string.go
@@ -0,0 +1,82 @@
+package pflag
+
+import "fmt"
+
+// -- string Value
+type stringValue string
+
+func newStringValue(val string, p *string) *stringValue {
+	*p = val
+	return (*stringValue)(p)
+}
+
+func (s *stringValue) Set(val string) error {
+	*s = stringValue(val)
+	return nil
+}
+func (s *stringValue) Type() string {
+	return "string"
+}
+
+func (s *stringValue) String() string { return fmt.Sprintf("%s", *s) }
+
+func stringConv(sval string) (interface{}, error) {
+	return sval, nil
+}
+
+// GetString return the string value of a flag with the given name
+func (f *FlagSet) GetString(name string) (string, error) {
+	val, err := f.getFlagType(name, "string", stringConv)
+	if err != nil {
+		return "", err
+	}
+	return val.(string), nil
+}
+
+// StringVar defines a string flag with specified name, default value, and usage string.
+// The argument p points to a string variable in which to store the value of the flag.
+func (f *FlagSet) StringVar(p *string, name string, value string, usage string) {
+	f.VarP(newStringValue(value, p), name, "", usage)
+}
+
+// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) StringVarP(p *string, name, shorthand string, value string, usage string) {
+	f.VarP(newStringValue(value, p), name, shorthand, usage)
+}
+
+// StringVar defines a string flag with specified name, default value, and usage string.
+// The argument p points to a string variable in which to store the value of the flag.
+func StringVar(p *string, name string, value string, usage string) {
+	CommandLine.VarP(newStringValue(value, p), name, "", usage)
+}
+
+// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
+func StringVarP(p *string, name, shorthand string, value string, usage string) {
+	CommandLine.VarP(newStringValue(value, p), name, shorthand, usage)
+}
+
+// String defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a string variable that stores the value of the flag.
+func (f *FlagSet) String(name string, value string, usage string) *string {
+	p := new(string)
+	f.StringVarP(p, name, "", value, usage)
+	return p
+}
+
+// StringP is like String, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) StringP(name, shorthand string, value string, usage string) *string {
+	p := new(string)
+	f.StringVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// String defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a string variable that stores the value of the flag.
+func String(name string, value string, usage string) *string {
+	return CommandLine.StringP(name, "", value, usage)
+}
+
+// StringP is like String, but accepts a shorthand letter that can be used after a single dash.
+func StringP(name, shorthand string, value string, usage string) *string {
+	return CommandLine.StringP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/string_slice.go b/vendor/github.com/spf13/pflag/string_slice.go
new file mode 100644
index 0000000..b53648b
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/string_slice.go
@@ -0,0 +1,111 @@
+package pflag
+
+import (
+	"encoding/csv"
+	"fmt"
+	"strings"
+)
+
+var _ = fmt.Fprint
+
+// -- stringSlice Value
+type stringSliceValue struct {
+	value   *[]string
+	changed bool
+}
+
+func newStringSliceValue(val []string, p *[]string) *stringSliceValue {
+	ssv := new(stringSliceValue)
+	ssv.value = p
+	*ssv.value = val
+	return ssv
+}
+
+func (s *stringSliceValue) Set(val string) error {
+	stringReader := strings.NewReader(val)
+	csvReader := csv.NewReader(stringReader)
+	v, err := csvReader.Read()
+	if err != nil {
+		return err
+	}
+	if !s.changed {
+		*s.value = v
+	} else {
+		*s.value = append(*s.value, v...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *stringSliceValue) Type() string {
+	return "stringSlice"
+}
+
+func (s *stringSliceValue) String() string { return "[" + strings.Join(*s.value, ",") + "]" }
+
+func stringSliceConv(sval string) (interface{}, error) {
+	sval = strings.Trim(sval, "[]")
+	// An empty string would cause a slice with one (empty) string
+	if len(sval) == 0 {
+		return []string{}, nil
+	}
+	v := strings.Split(sval, ",")
+	return v, nil
+}
+
+// GetStringSlice return the []string value of a flag with the given name
+func (f *FlagSet) GetStringSlice(name string) ([]string, error) {
+	val, err := f.getFlagType(name, "stringSlice", stringSliceConv)
+	if err != nil {
+		return []string{}, err
+	}
+	return val.([]string), nil
+}
+
+// StringSliceVar defines a string flag with specified name, default value, and usage string.
+// The argument p points to a []string variable in which to store the value of the flag.
+func (f *FlagSet) StringSliceVar(p *[]string, name string, value []string, usage string) {
+	f.VarP(newStringSliceValue(value, p), name, "", usage)
+}
+
+// StringSliceVarP is like StringSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) StringSliceVarP(p *[]string, name, shorthand string, value []string, usage string) {
+	f.VarP(newStringSliceValue(value, p), name, shorthand, usage)
+}
+
+// StringSliceVar defines a string flag with specified name, default value, and usage string.
+// The argument p points to a []string variable in which to store the value of the flag.
+func StringSliceVar(p *[]string, name string, value []string, usage string) {
+	CommandLine.VarP(newStringSliceValue(value, p), name, "", usage)
+}
+
+// StringSliceVarP is like StringSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func StringSliceVarP(p *[]string, name, shorthand string, value []string, usage string) {
+	CommandLine.VarP(newStringSliceValue(value, p), name, shorthand, usage)
+}
+
+// StringSlice defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a []string variable that stores the value of the flag.
+func (f *FlagSet) StringSlice(name string, value []string, usage string) *[]string {
+	p := []string{}
+	f.StringSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// StringSliceP is like StringSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) StringSliceP(name, shorthand string, value []string, usage string) *[]string {
+	p := []string{}
+	f.StringSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// StringSlice defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a []string variable that stores the value of the flag.
+func StringSlice(name string, value []string, usage string) *[]string {
+	return CommandLine.StringSliceP(name, "", value, usage)
+}
+
+// StringSliceP is like StringSlice, but accepts a shorthand letter that can be used after a single dash.
+func StringSliceP(name, shorthand string, value []string, usage string) *[]string {
+	return CommandLine.StringSliceP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/uint.go b/vendor/github.com/spf13/pflag/uint.go
new file mode 100644
index 0000000..e142b49
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/uint.go
@@ -0,0 +1,91 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- uint Value
+type uintValue uint
+
+func newUintValue(val uint, p *uint) *uintValue {
+	*p = val
+	return (*uintValue)(p)
+}
+
+func (i *uintValue) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 64)
+	*i = uintValue(v)
+	return err
+}
+
+func (i *uintValue) Type() string {
+	return "uint"
+}
+
+func (i *uintValue) String() string { return fmt.Sprintf("%v", *i) }
+
+func uintConv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 0)
+	if err != nil {
+		return 0, err
+	}
+	return uint(v), nil
+}
+
+// GetUint return the uint value of a flag with the given name
+func (f *FlagSet) GetUint(name string) (uint, error) {
+	val, err := f.getFlagType(name, "uint", uintConv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint), nil
+}
+
+// UintVar defines a uint flag with specified name, default value, and usage string.
+// The argument p points to a uint variable in which to store the value of the flag.
+func (f *FlagSet) UintVar(p *uint, name string, value uint, usage string) {
+	f.VarP(newUintValue(value, p), name, "", usage)
+}
+
+// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) UintVarP(p *uint, name, shorthand string, value uint, usage string) {
+	f.VarP(newUintValue(value, p), name, shorthand, usage)
+}
+
+// UintVar defines a uint flag with specified name, default value, and usage string.
+// The argument p points to a uint  variable in which to store the value of the flag.
+func UintVar(p *uint, name string, value uint, usage string) {
+	CommandLine.VarP(newUintValue(value, p), name, "", usage)
+}
+
+// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash.
+func UintVarP(p *uint, name, shorthand string, value uint, usage string) {
+	CommandLine.VarP(newUintValue(value, p), name, shorthand, usage)
+}
+
+// Uint defines a uint flag with specified name, default value, and usage string.
+// The return value is the address of a uint  variable that stores the value of the flag.
+func (f *FlagSet) Uint(name string, value uint, usage string) *uint {
+	p := new(uint)
+	f.UintVarP(p, name, "", value, usage)
+	return p
+}
+
+// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) UintP(name, shorthand string, value uint, usage string) *uint {
+	p := new(uint)
+	f.UintVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Uint defines a uint flag with specified name, default value, and usage string.
+// The return value is the address of a uint  variable that stores the value of the flag.
+func Uint(name string, value uint, usage string) *uint {
+	return CommandLine.UintP(name, "", value, usage)
+}
+
+// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash.
+func UintP(name, shorthand string, value uint, usage string) *uint {
+	return CommandLine.UintP(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/uint16.go b/vendor/github.com/spf13/pflag/uint16.go
new file mode 100644
index 0000000..5c96c19
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/uint16.go
@@ -0,0 +1,89 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- uint16 value
+type uint16Value uint16
+
+func newUint16Value(val uint16, p *uint16) *uint16Value {
+	*p = val
+	return (*uint16Value)(p)
+}
+func (i *uint16Value) String() string { return fmt.Sprintf("%d", *i) }
+func (i *uint16Value) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 16)
+	*i = uint16Value(v)
+	return err
+}
+
+func (i *uint16Value) Type() string {
+	return "uint16"
+}
+
+func uint16Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 16)
+	if err != nil {
+		return 0, err
+	}
+	return uint16(v), nil
+}
+
+// GetUint16 return the uint16 value of a flag with the given name
+func (f *FlagSet) GetUint16(name string) (uint16, error) {
+	val, err := f.getFlagType(name, "uint16", uint16Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint16), nil
+}
+
+// Uint16Var defines a uint flag with specified name, default value, and usage string.
+// The argument p points to a uint variable in which to store the value of the flag.
+func (f *FlagSet) Uint16Var(p *uint16, name string, value uint16, usage string) {
+	f.VarP(newUint16Value(value, p), name, "", usage)
+}
+
+// Uint16VarP is like Uint16Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint16VarP(p *uint16, name, shorthand string, value uint16, usage string) {
+	f.VarP(newUint16Value(value, p), name, shorthand, usage)
+}
+
+// Uint16Var defines a uint flag with specified name, default value, and usage string.
+// The argument p points to a uint  variable in which to store the value of the flag.
+func Uint16Var(p *uint16, name string, value uint16, usage string) {
+	CommandLine.VarP(newUint16Value(value, p), name, "", usage)
+}
+
+// Uint16VarP is like Uint16Var, but accepts a shorthand letter that can be used after a single dash.
+func Uint16VarP(p *uint16, name, shorthand string, value uint16, usage string) {
+	CommandLine.VarP(newUint16Value(value, p), name, shorthand, usage)
+}
+
+// Uint16 defines a uint flag with specified name, default value, and usage string.
+// The return value is the address of a uint  variable that stores the value of the flag.
+func (f *FlagSet) Uint16(name string, value uint16, usage string) *uint16 {
+	p := new(uint16)
+	f.Uint16VarP(p, name, "", value, usage)
+	return p
+}
+
+// Uint16P is like Uint16, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint16P(name, shorthand string, value uint16, usage string) *uint16 {
+	p := new(uint16)
+	f.Uint16VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Uint16 defines a uint flag with specified name, default value, and usage string.
+// The return value is the address of a uint  variable that stores the value of the flag.
+func Uint16(name string, value uint16, usage string) *uint16 {
+	return CommandLine.Uint16P(name, "", value, usage)
+}
+
+// Uint16P is like Uint16, but accepts a shorthand letter that can be used after a single dash.
+func Uint16P(name, shorthand string, value uint16, usage string) *uint16 {
+	return CommandLine.Uint16P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/uint32.go b/vendor/github.com/spf13/pflag/uint32.go
new file mode 100644
index 0000000..294fcaa
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/uint32.go
@@ -0,0 +1,89 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- uint16 value
+type uint32Value uint32
+
+func newUint32Value(val uint32, p *uint32) *uint32Value {
+	*p = val
+	return (*uint32Value)(p)
+}
+func (i *uint32Value) String() string { return fmt.Sprintf("%d", *i) }
+func (i *uint32Value) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 32)
+	*i = uint32Value(v)
+	return err
+}
+
+func (i *uint32Value) Type() string {
+	return "uint32"
+}
+
+func uint32Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 32)
+	if err != nil {
+		return 0, err
+	}
+	return uint32(v), nil
+}
+
+// GetUint32 return the uint32 value of a flag with the given name
+func (f *FlagSet) GetUint32(name string) (uint32, error) {
+	val, err := f.getFlagType(name, "uint32", uint32Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint32), nil
+}
+
+// Uint32Var defines a uint32 flag with specified name, default value, and usage string.
+// The argument p points to a uint32 variable in which to store the value of the flag.
+func (f *FlagSet) Uint32Var(p *uint32, name string, value uint32, usage string) {
+	f.VarP(newUint32Value(value, p), name, "", usage)
+}
+
+// Uint32VarP is like Uint32Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint32VarP(p *uint32, name, shorthand string, value uint32, usage string) {
+	f.VarP(newUint32Value(value, p), name, shorthand, usage)
+}
+
+// Uint32Var defines a uint32 flag with specified name, default value, and usage string.
+// The argument p points to a uint32  variable in which to store the value of the flag.
+func Uint32Var(p *uint32, name string, value uint32, usage string) {
+	CommandLine.VarP(newUint32Value(value, p), name, "", usage)
+}
+
+// Uint32VarP is like Uint32Var, but accepts a shorthand letter that can be used after a single dash.
+func Uint32VarP(p *uint32, name, shorthand string, value uint32, usage string) {
+	CommandLine.VarP(newUint32Value(value, p), name, shorthand, usage)
+}
+
+// Uint32 defines a uint32 flag with specified name, default value, and usage string.
+// The return value is the address of a uint32  variable that stores the value of the flag.
+func (f *FlagSet) Uint32(name string, value uint32, usage string) *uint32 {
+	p := new(uint32)
+	f.Uint32VarP(p, name, "", value, usage)
+	return p
+}
+
+// Uint32P is like Uint32, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint32P(name, shorthand string, value uint32, usage string) *uint32 {
+	p := new(uint32)
+	f.Uint32VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Uint32 defines a uint32 flag with specified name, default value, and usage string.
+// The return value is the address of a uint32  variable that stores the value of the flag.
+func Uint32(name string, value uint32, usage string) *uint32 {
+	return CommandLine.Uint32P(name, "", value, usage)
+}
+
+// Uint32P is like Uint32, but accepts a shorthand letter that can be used after a single dash.
+func Uint32P(name, shorthand string, value uint32, usage string) *uint32 {
+	return CommandLine.Uint32P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/uint64.go b/vendor/github.com/spf13/pflag/uint64.go
new file mode 100644
index 0000000..c681885
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/uint64.go
@@ -0,0 +1,91 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- uint64 Value
+type uint64Value uint64
+
+func newUint64Value(val uint64, p *uint64) *uint64Value {
+	*p = val
+	return (*uint64Value)(p)
+}
+
+func (i *uint64Value) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 64)
+	*i = uint64Value(v)
+	return err
+}
+
+func (i *uint64Value) Type() string {
+	return "uint64"
+}
+
+func (i *uint64Value) String() string { return fmt.Sprintf("%v", *i) }
+
+func uint64Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 64)
+	if err != nil {
+		return 0, err
+	}
+	return uint64(v), nil
+}
+
+// GetUint64 return the uint64 value of a flag with the given name
+func (f *FlagSet) GetUint64(name string) (uint64, error) {
+	val, err := f.getFlagType(name, "uint64", uint64Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint64), nil
+}
+
+// Uint64Var defines a uint64 flag with specified name, default value, and usage string.
+// The argument p points to a uint64 variable in which to store the value of the flag.
+func (f *FlagSet) Uint64Var(p *uint64, name string, value uint64, usage string) {
+	f.VarP(newUint64Value(value, p), name, "", usage)
+}
+
+// Uint64VarP is like Uint64Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint64VarP(p *uint64, name, shorthand string, value uint64, usage string) {
+	f.VarP(newUint64Value(value, p), name, shorthand, usage)
+}
+
+// Uint64Var defines a uint64 flag with specified name, default value, and usage string.
+// The argument p points to a uint64 variable in which to store the value of the flag.
+func Uint64Var(p *uint64, name string, value uint64, usage string) {
+	CommandLine.VarP(newUint64Value(value, p), name, "", usage)
+}
+
+// Uint64VarP is like Uint64Var, but accepts a shorthand letter that can be used after a single dash.
+func Uint64VarP(p *uint64, name, shorthand string, value uint64, usage string) {
+	CommandLine.VarP(newUint64Value(value, p), name, shorthand, usage)
+}
+
+// Uint64 defines a uint64 flag with specified name, default value, and usage string.
+// The return value is the address of a uint64 variable that stores the value of the flag.
+func (f *FlagSet) Uint64(name string, value uint64, usage string) *uint64 {
+	p := new(uint64)
+	f.Uint64VarP(p, name, "", value, usage)
+	return p
+}
+
+// Uint64P is like Uint64, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint64P(name, shorthand string, value uint64, usage string) *uint64 {
+	p := new(uint64)
+	f.Uint64VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Uint64 defines a uint64 flag with specified name, default value, and usage string.
+// The return value is the address of a uint64 variable that stores the value of the flag.
+func Uint64(name string, value uint64, usage string) *uint64 {
+	return CommandLine.Uint64P(name, "", value, usage)
+}
+
+// Uint64P is like Uint64, but accepts a shorthand letter that can be used after a single dash.
+func Uint64P(name, shorthand string, value uint64, usage string) *uint64 {
+	return CommandLine.Uint64P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/pflag/uint8.go b/vendor/github.com/spf13/pflag/uint8.go
new file mode 100644
index 0000000..26db418
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/uint8.go
@@ -0,0 +1,91 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// -- uint8 Value
+type uint8Value uint8
+
+func newUint8Value(val uint8, p *uint8) *uint8Value {
+	*p = val
+	return (*uint8Value)(p)
+}
+
+func (i *uint8Value) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 8)
+	*i = uint8Value(v)
+	return err
+}
+
+func (i *uint8Value) Type() string {
+	return "uint8"
+}
+
+func (i *uint8Value) String() string { return fmt.Sprintf("%v", *i) }
+
+func uint8Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 8)
+	if err != nil {
+		return 0, err
+	}
+	return uint8(v), nil
+}
+
+// GetUint8 return the uint8 value of a flag with the given name
+func (f *FlagSet) GetUint8(name string) (uint8, error) {
+	val, err := f.getFlagType(name, "uint8", uint8Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint8), nil
+}
+
+// Uint8Var defines a uint8 flag with specified name, default value, and usage string.
+// The argument p points to a uint8 variable in which to store the value of the flag.
+func (f *FlagSet) Uint8Var(p *uint8, name string, value uint8, usage string) {
+	f.VarP(newUint8Value(value, p), name, "", usage)
+}
+
+// Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) {
+	f.VarP(newUint8Value(value, p), name, shorthand, usage)
+}
+
+// Uint8Var defines a uint8 flag with specified name, default value, and usage string.
+// The argument p points to a uint8 variable in which to store the value of the flag.
+func Uint8Var(p *uint8, name string, value uint8, usage string) {
+	CommandLine.VarP(newUint8Value(value, p), name, "", usage)
+}
+
+// Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
+func Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) {
+	CommandLine.VarP(newUint8Value(value, p), name, shorthand, usage)
+}
+
+// Uint8 defines a uint8 flag with specified name, default value, and usage string.
+// The return value is the address of a uint8 variable that stores the value of the flag.
+func (f *FlagSet) Uint8(name string, value uint8, usage string) *uint8 {
+	p := new(uint8)
+	f.Uint8VarP(p, name, "", value, usage)
+	return p
+}
+
+// Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Uint8P(name, shorthand string, value uint8, usage string) *uint8 {
+	p := new(uint8)
+	f.Uint8VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Uint8 defines a uint8 flag with specified name, default value, and usage string.
+// The return value is the address of a uint8 variable that stores the value of the flag.
+func Uint8(name string, value uint8, usage string) *uint8 {
+	return CommandLine.Uint8P(name, "", value, usage)
+}
+
+// Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash.
+func Uint8P(name, shorthand string, value uint8, usage string) *uint8 {
+	return CommandLine.Uint8P(name, shorthand, value, usage)
+}
diff --git a/vendor/github.com/spf13/viper/LICENSE b/vendor/github.com/spf13/viper/LICENSE
new file mode 100644
index 0000000..4527efb
--- /dev/null
+++ b/vendor/github.com/spf13/viper/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Steve Francia
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/vendor/github.com/spf13/viper/README.md b/vendor/github.com/spf13/viper/README.md
new file mode 100644
index 0000000..cad242d
--- /dev/null
+++ b/vendor/github.com/spf13/viper/README.md
@@ -0,0 +1,620 @@
+![viper logo](https://cloud.githubusercontent.com/assets/173412/10886745/998df88a-8151-11e5-9448-4736db51020d.png)
+
+Go configuration with fangs!
+
+Many Go projects are built using Viper including:
+
+* [Hugo](http://gohugo.io)
+* [EMC RexRay](http://rexray.readthedocs.org/en/stable/)
+* [Imgur's Incus](https://github.com/Imgur/incus)
+* [Nanobox](https://github.com/nanobox-io/nanobox)/[Nanopack](https://github.com/nanopack)
+* [Docker Notary](https://github.com/docker/Notary)
+* [BloomApi](https://www.bloomapi.com/)
+* [DOIt](https://github.com/bryanl/doit)
+
+ [![Build Status](https://travis-ci.org/spf13/viper.svg)](https://travis-ci.org/spf13/viper) [![Join the chat at https://gitter.im/spf13/viper](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/spf13/viper?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+
+## What is Viper?
+
+Viper is a complete configuration solution for go applications including 12 factor apps. It is designed
+to work within an application, and can handle all types of configuration needs
+and formats. It supports:
+
+* setting defaults
+* reading from JSON, TOML, YAML, HCL, and Java properties config files
+* live watching and re-reading of config files (optional)
+* reading from environment variables
+* reading from remote config systems (etcd or Consul), and watching changes
+* reading from command line flags
+* reading from buffer
+* setting explicit values
+
+Viper can be thought of as a registry for all of your applications
+configuration needs.
+
+## Why Viper?
+
+When building a modern application, you don’t want to worry about
+configuration file formats; you want to focus on building awesome software.
+Viper is here to help with that.
+
+Viper does the following for you:
+
+1. Find, load, and unmarshal a configuration file in JSON, TOML, YAML, HCL, or Java properties formats.
+2. Provide a mechanism to set default values for your different
+   configuration options.
+3. Provide a mechanism to set override values for options specified through
+   command line flags.
+4. Provide an alias system to easily rename parameters without breaking existing
+   code.
+5. Make it easy to tell the difference between when a user has provided a
+   command line or config file which is the same as the default.
+
+Viper uses the following precedence order. Each item takes precedence over the
+item below it:
+
+ * explicit call to Set
+ * flag
+ * env
+ * config
+ * key/value store
+ * default
+
+Viper configuration keys are case insensitive.
+
+## Putting Values into Viper
+
+### Establishing Defaults
+
+A good configuration system will support default values. A default value is not
+required for a key, but it's useful in the event that a key hasn’t been set via
+config file, environment variable, remote configuration or flag.
+
+Examples:
+
+```go
+viper.SetDefault("ContentDir", "content")
+viper.SetDefault("LayoutDir", "layouts")
+viper.SetDefault("Taxonomies", map[string]string{"tag": "tags", "category": "categories"})
+```
+
+### Reading Config Files
+
+Viper requires minimal configuration so it knows where to look for config files.
+Viper supports JSON, TOML, YAML, HCL, and Java Properties files. Viper can search multiple paths, but
+currently a single Viper instance only supports a single configuration file.
+Viper does not default to any configuration search paths leaving defaults decision
+to an application.
+
+Here is an example of how to use Viper to search for and read a configuration file.
+None of the specific paths are required, but at least one path should be provided
+where a configuration file is expected.
+
+```go
+viper.SetConfigName("config") // name of config file (without extension)
+viper.AddConfigPath("/etc/appname/")   // path to look for the config file in
+viper.AddConfigPath("$HOME/.appname")  // call multiple times to add many search paths
+viper.AddConfigPath(".")               // optionally look for config in the working directory
+err := viper.ReadInConfig() // Find and read the config file
+if err != nil { // Handle errors reading the config file
+	panic(fmt.Errorf("Fatal error config file: %s \n", err))
+}
+```
+
+### Watching and re-reading config files
+
+Viper supports the ability to have your application live read a config file while running.
+
+Gone are the days of needing to restart a server to have a config take effect,
+viper powered applications can read an update to a config file while running and
+not miss a beat.
+
+Simply tell the viper instance to watchConfig. 
+Optionally you can provide a function for Viper to run each time a change occurs.
+
+**Make sure you add all of the configPaths prior to calling `WatchConfig()`**
+
+```go
+		viper.WatchConfig()
+		viper.OnConfigChange(func(e fsnotify.Event) {
+			fmt.Println("Config file changed:", e.Name)
+		})
+```
+
+### Reading Config from io.Reader
+
+Viper predefines many configuration sources such as files, environment
+variables, flags, and remote K/V store, but you are not bound to them. You can
+also implement your own required configuration source and feed it to viper.
+
+```go
+viper.SetConfigType("yaml") // or viper.SetConfigType("YAML")
+
+// any approach to require this configuration into your program.
+var yamlExample = []byte(`
+Hacker: true
+name: steve
+hobbies:
+- skateboarding
+- snowboarding
+- go
+clothing:
+  jacket: leather
+  trousers: denim
+age: 35
+eyes : brown
+beard: true
+`)
+
+viper.ReadConfig(bytes.NewBuffer(yamlExample))
+
+viper.Get("name") // this would be "steve"
+```
+
+### Setting Overrides
+
+These could be from a command line flag, or from your own application logic.
+
+```go
+viper.Set("Verbose", true)
+viper.Set("LogFile", LogFile)
+```
+
+### Registering and Using Aliases
+
+Aliases permit a single value to be referenced by multiple keys
+
+```go
+viper.RegisterAlias("loud", "Verbose")
+
+viper.Set("verbose", true) // same result as next line
+viper.Set("loud", true)   // same result as prior line
+
+viper.GetBool("loud") // true
+viper.GetBool("verbose") // true
+```
+
+### Working with Environment Variables
+
+Viper has full support for environment variables. This enables 12 factor
+applications out of the box. There are four methods that exist to aid working
+with ENV:
+
+ * `AutomaticEnv()`
+ * `BindEnv(string...) : error`
+ * `SetEnvPrefix(string)`
+ * `SetEnvReplacer(string...) *strings.Replacer`
+
+_When working with ENV variables, it’s important to recognize that Viper
+treats ENV variables as case sensitive._
+
+Viper provides a mechanism to try to ensure that ENV variables are unique. By
+using `SetEnvPrefix`, you can tell Viper to use add a prefix while reading from
+the environment variables. Both `BindEnv` and `AutomaticEnv` will use this
+prefix.
+
+`BindEnv` takes one or two parameters. The first parameter is the key name, the
+second is the name of the environment variable. The name of the environment
+variable is case sensitive. If the ENV variable name is not provided, then
+Viper will automatically assume that the key name matches the ENV variable name,
+but the ENV variable is IN ALL CAPS. When you explicitly provide the ENV
+variable name, it **does not** automatically add the prefix.
+
+One important thing to recognize when working with ENV variables is that the
+value will be read each time it is accessed. Viper does not fix the value when
+the `BindEnv` is called.
+
+`AutomaticEnv` is a powerful helper especially when combined with
+`SetEnvPrefix`. When called, Viper will check for an environment variable any
+time a `viper.Get` request is made. It will apply the following rules. It will
+check for a environment variable with a name matching the key uppercased and
+prefixed with the `EnvPrefix` if set.
+
+`SetEnvReplacer` allows you to use a `strings.Replacer` object to rewrite Env
+keys to an extent. This is useful if you want to use `-` or something in your
+`Get()` calls, but want your environmental variables to use `_` delimiters. An
+example of using it can be found in `viper_test.go`.
+
+#### Env example
+
+```go
+SetEnvPrefix("spf") // will be uppercased automatically
+BindEnv("id")
+
+os.Setenv("SPF_ID", "13") // typically done outside of the app
+
+id := Get("id") // 13
+```
+
+### Working with Flags
+
+Viper has the ability to bind to flags. Specifically, Viper supports `Pflags`
+as used in the [Cobra](https://github.com/spf13/cobra) library.
+
+Like `BindEnv`, the value is not set when the binding method is called, but when
+it is accessed. This means you can bind as early as you want, even in an
+`init()` function.
+
+The `BindPFlag()` method provides this functionality.
+
+Example:
+
+```go
+serverCmd.Flags().Int("port", 1138, "Port to run Application server on")
+viper.BindPFlag("port", serverCmd.Flags().Lookup("port"))
+```
+
+The use of [pflag](https://github.com/spf13/pflag/) in Viper does not preclude
+the use of other packages that use the [flag](https://golang.org/pkg/flag/)
+package from the standard library. The pflag package can handle the flags
+defined for the flag package by importing these flags. This is accomplished
+by a calling a convenience function provided by the pflag package called
+AddGoFlagSet().
+
+Example:
+
+```go
+package main
+
+import (
+	"flag"
+	"github.com/spf13/pflag"
+)
+
+func main() {
+	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
+	pflag.Parse()
+    ...
+}
+```
+
+#### Flag interfaces
+
+Viper provides two Go interfaces to bind other flag systems if you don't use `Pflags`.
+
+`FlagValue` represents a single flag. This is a very simple example on how to implement this interface:
+
+```go
+type myFlag struct {}
+func (f myFlag) IsChanged() { return false }
+func (f myFlag) Name() { return "my-flag-name" }
+func (f myFlag) ValueString() { return "my-flag-value" }
+func (f myFlag) ValueType() { return "string" }
+```
+
+Once your flag implements this interface, you can simply tell Viper to bind it:
+
+```go
+viper.BindFlagValue("my-flag-name", myFlag{})
+```
+
+`FlagValueSet` represents a group of flags. This is a very simple example on how to implement this interface:
+
+```go
+type myFlagSet struct {
+	flags []myFlag
+}
+
+func (f myFlagSet) VisitAll(fn func(FlagValue)) {
+	for _, flag := range flags {
+		fn(flag)	
+	}
+}
+```
+
+Once your flag set implements this interface, you can simply tell Viper to bind it:
+
+```go
+fSet := myFlagSet{
+	flags: []myFlag{myFlag{}, myFlag{}},
+}
+viper.BindFlagValues("my-flags", fSet)
+```
+
+### Remote Key/Value Store Support
+
+To enable remote support in Viper, do a blank import of the `viper/remote`
+package:
+
+`import _ "github.com/spf13/viper/remote"`
+
+Viper will read a config string (as JSON, TOML, YAML or HCL) retrieved from a path
+in a Key/Value store such as etcd or Consul.  These values take precedence over
+default values, but are overridden by configuration values retrieved from disk,
+flags, or environment variables.
+
+Viper uses [crypt](https://github.com/xordataexchange/crypt) to retrieve
+configuration from the K/V store, which means that you can store your
+configuration values encrypted and have them automatically decrypted if you have
+the correct gpg keyring.  Encryption is optional.
+
+You can use remote configuration in conjunction with local configuration, or
+independently of it.
+
+`crypt` has a command-line helper that you can use to put configurations in your
+K/V store. `crypt` defaults to etcd on http://127.0.0.1:4001.
+
+```bash
+$ go get github.com/xordataexchange/crypt/bin/crypt
+$ crypt set -plaintext /config/hugo.json /Users/hugo/settings/config.json
+```
+
+Confirm that your value was set:
+
+```bash
+$ crypt get -plaintext /config/hugo.json
+```
+
+See the `crypt` documentation for examples of how to set encrypted values, or
+how to use Consul.
+
+### Remote Key/Value Store Example - Unencrypted
+
+```go
+viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001","/config/hugo.json")
+viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop"
+err := viper.ReadRemoteConfig()
+```
+
+### Remote Key/Value Store Example - Encrypted
+
+```go
+viper.AddSecureRemoteProvider("etcd","http://127.0.0.1:4001","/config/hugo.json","/etc/secrets/mykeyring.gpg")
+viper.SetConfigType("json") // because there is no file extension in a stream of bytes,  supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop"
+err := viper.ReadRemoteConfig()
+```
+
+### Watching Changes in etcd - Unencrypted
+
+```go
+// alternatively, you can create a new viper instance.
+var runtime_viper = viper.New()
+
+runtime_viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001", "/config/hugo.yml")
+runtime_viper.SetConfigType("yaml") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop"
+
+// read from remote config the first time.
+err := runtime_viper.ReadRemoteConfig()
+
+// unmarshal config
+runtime_viper.Unmarshal(&runtime_conf)
+
+// open a goroutine to watch remote changes forever
+go func(){
+	for {
+	    time.Sleep(time.Second * 5) // delay after each request
+
+	    // currently, only tested with etcd support
+	    err := runtime_viper.WatchRemoteConfig()
+	    if err != nil {
+	        log.Errorf("unable to read remote config: %v", err)
+	        continue
+	    }
+
+	    // unmarshal new config into our runtime config struct. you can also use channel
+	    // to implement a signal to notify the system of the changes
+	    runtime_viper.Unmarshal(&runtime_conf)
+	}
+}()
+```
+
+## Getting Values From Viper
+
+In Viper, there are a few ways to get a value depending on the value's type.
+The following functions and methods exist:
+
+ * `Get(key string) : interface{}`
+ * `GetBool(key string) : bool`
+ * `GetFloat64(key string) : float64`
+ * `GetInt(key string) : int`
+ * `GetString(key string) : string`
+ * `GetStringMap(key string) : map[string]interface{}`
+ * `GetStringMapString(key string) : map[string]string`
+ * `GetStringSlice(key string) : []string`
+ * `GetTime(key string) : time.Time`
+ * `GetDuration(key string) : time.Duration`
+ * `IsSet(key string) : bool`
+
+One important thing to recognize is that each Get function will return a zero
+value if it’s not found. To check if a given key exists, the `IsSet()` method
+has been provided.
+
+Example:
+```go
+viper.GetString("logfile") // case-insensitive Setting & Getting
+if viper.GetBool("verbose") {
+    fmt.Println("verbose enabled")
+}
+```
+### Accessing nested keys
+
+The accessor methods also accept formatted paths to deeply nested keys. For
+example, if the following JSON file is loaded:
+
+```json
+{
+    "host": {
+        "address": "localhost",
+        "port": 5799
+    },
+    "datastore": {
+        "metric": {
+            "host": "127.0.0.1",
+            "port": 3099
+        },
+        "warehouse": {
+            "host": "198.0.0.1",
+            "port": 2112
+        }
+    }
+}
+
+```
+
+Viper can access a nested field by passing a `.` delimited path of keys:
+
+```go
+GetString("datastore.metric.host") // (returns "127.0.0.1")
+```
+
+This obeys the precedence rules established above; the search for the root key
+(in this example, `datastore`) will cascade through the remaining configuration
+registries until found. The search for the sub-keys (`metric` and `host`),
+however, will not.
+
+For example, if the `metric` key was not defined in the configuration loaded
+from file, but was defined in the defaults, Viper would return the zero value.
+
+On the other hand, if the primary key was not defined, Viper would go through
+the remaining registries looking for it.
+
+Lastly, if there exists a key that matches the delimited key path, its value
+will be returned instead. E.g.
+
+```json
+{
+    "datastore.metric.host": "0.0.0.0",
+    "host": {
+        "address": "localhost",
+        "port": 5799
+    },
+    "datastore": {
+        "metric": {
+            "host": "127.0.0.1",
+            "port": 3099
+        },
+        "warehouse": {
+            "host": "198.0.0.1",
+            "port": 2112
+        }
+    }
+}
+
+GetString("datastore.metric.host") //returns "0.0.0.0"
+```
+
+### Extract sub-tree
+
+Extract sub-tree from Viper.
+
+For example, `viper` represents:
+
+```json
+app:
+  cache1:
+    max-items: 100
+    item-size: 64
+  cache2:
+    max-items: 200
+    item-size: 80
+```
+
+After executing:
+
+```go
+subv := viper.Sub("app.cache1")
+```
+
+`subv` represents:
+
+```json
+max-items: 100
+item-size: 64
+```
+
+Suppose we have:
+
+```go
+func NewCache(cfg *Viper) *Cache {...}
+```
+
+which creates a cache based on config information formatted as `subv`.
+Now it's easy to create these 2 caches separately as:
+
+```go
+cfg1 := viper.Sub("app.cache1")
+cache1 := NewCache(cfg1)
+
+cfg2 := viper.Sub("app.cache2")
+cache2 := NewCache(cfg2)
+```
+
+### Unmarshaling
+
+You also have the option of Unmarshaling all or a specific value to a struct, map,
+etc.
+
+There are two methods to do this:
+
+ * `Unmarshal(rawVal interface{}) : error`
+ * `UnmarshalKey(key string, rawVal interface{}) : error`
+
+Example:
+
+```go
+type config struct {
+	Port int
+	Name string
+	PathMap string `mapstructure:"path_map"`
+}
+
+var C config
+
+err := Unmarshal(&C)
+if err != nil {
+	t.Fatalf("unable to decode into struct, %v", err)
+}
+```
+
+## Viper or Vipers?
+
+Viper comes ready to use out of the box. There is no configuration or
+initialization needed to begin using Viper. Since most applications will want
+to use a single central repository for their configuration, the viper package
+provides this. It is similar to a singleton.
+
+In all of the examples above, they demonstrate using viper in it's singleton
+style approach.
+
+### Working with multiple vipers
+
+You can also create many different vipers for use in your application. Each will
+have it’s own unique set of configurations and values. Each can read from a
+different config file, key value store, etc. All of the functions that viper
+package supports are mirrored as methods on a viper.
+
+Example:
+
+```go
+x := viper.New()
+y := viper.New()
+
+x.SetDefault("ContentDir", "content")
+y.SetDefault("ContentDir", "foobar")
+
+//...
+```
+
+When working with multiple vipers, it is up to the user to keep track of the
+different vipers.
+
+## Q & A
+
+Q: Why not INI files?
+
+A: Ini files are pretty awful. There’s no standard format, and they are hard to
+validate. Viper is designed to work with JSON, TOML or YAML files. If someone
+really wants to add this feature, I’d be happy to merge it. It’s easy to specify
+which formats your application will permit.
+
+Q: Why is it called “Viper”?
+
+A: Viper is designed to be a [companion](http://en.wikipedia.org/wiki/Viper_(G.I._Joe))
+to [Cobra](https://github.com/spf13/cobra). While both can operate completely
+independently, together they make a powerful pair to handle much of your
+application foundation needs.
+
+Q: Why is it called “Cobra”?
+
+A: Is there a better name for a [commander](http://en.wikipedia.org/wiki/Cobra_Commander)?
diff --git a/vendor/github.com/spf13/viper/flags.go b/vendor/github.com/spf13/viper/flags.go
new file mode 100644
index 0000000..dd32f4e
--- /dev/null
+++ b/vendor/github.com/spf13/viper/flags.go
@@ -0,0 +1,57 @@
+package viper
+
+import "github.com/spf13/pflag"
+
+// FlagValueSet is an interface that users can implement
+// to bind a set of flags to viper.
+type FlagValueSet interface {
+	VisitAll(fn func(FlagValue))
+}
+
+// FlagValue is an interface that users can implement
+// to bind different flags to viper.
+type FlagValue interface {
+	HasChanged() bool
+	Name() string
+	ValueString() string
+	ValueType() string
+}
+
+// pflagValueSet is a wrapper around *pflag.ValueSet
+// that implements FlagValueSet.
+type pflagValueSet struct {
+	flags *pflag.FlagSet
+}
+
+// VisitAll iterates over all *pflag.Flag inside the *pflag.FlagSet.
+func (p pflagValueSet) VisitAll(fn func(flag FlagValue)) {
+	p.flags.VisitAll(func(flag *pflag.Flag) {
+		fn(pflagValue{flag})
+	})
+}
+
+// pflagValue is a wrapper aroung *pflag.flag
+// that implements FlagValue
+type pflagValue struct {
+	flag *pflag.Flag
+}
+
+// HasChanges returns whether the flag has changes or not.
+func (p pflagValue) HasChanged() bool {
+	return p.flag.Changed
+}
+
+// Name returns the name of the flag.
+func (p pflagValue) Name() string {
+	return p.flag.Name
+}
+
+// ValueString returns the value of the flag as a string.
+func (p pflagValue) ValueString() string {
+	return p.flag.Value.String()
+}
+
+// ValueType returns the type of the flag as a string.
+func (p pflagValue) ValueType() string {
+	return p.flag.Value.Type()
+}
diff --git a/vendor/github.com/spf13/viper/nohup.out b/vendor/github.com/spf13/viper/nohup.out
new file mode 100644
index 0000000..8973bf2
--- /dev/null
+++ b/vendor/github.com/spf13/viper/nohup.out
@@ -0,0 +1 @@
+QProcess::start: Process is already running
diff --git a/vendor/github.com/spf13/viper/util.go b/vendor/github.com/spf13/viper/util.go
new file mode 100644
index 0000000..0cc4553
--- /dev/null
+++ b/vendor/github.com/spf13/viper/util.go
@@ -0,0 +1,219 @@
+// Copyright © 2014 Steve Francia <spf@spf13.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+// Viper is a application configuration system.
+// It believes that applications can be configured a variety of ways
+// via flags, ENVIRONMENT variables, configuration files retrieved
+// from the file system, or a remote key/value store.
+
+package viper
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"unicode"
+
+	"github.com/BurntSushi/toml"
+	"github.com/hashicorp/hcl"
+	"github.com/magiconair/properties"
+	"github.com/spf13/cast"
+	jww "github.com/spf13/jwalterweatherman"
+	"gopkg.in/yaml.v2"
+)
+
+// Denotes failing to parse configuration file.
+type ConfigParseError struct {
+	err error
+}
+
+// Returns the formatted configuration error.
+func (pe ConfigParseError) Error() string {
+	return fmt.Sprintf("While parsing config: %s", pe.err.Error())
+}
+
+func insensitiviseMap(m map[string]interface{}) {
+	for key, val := range m {
+		lower := strings.ToLower(key)
+		if key != lower {
+			delete(m, key)
+			m[lower] = val
+		}
+	}
+}
+
+func absPathify(inPath string) string {
+	jww.INFO.Println("Trying to resolve absolute path to", inPath)
+
+	if strings.HasPrefix(inPath, "$HOME") {
+		inPath = userHomeDir() + inPath[5:]
+	}
+
+	if strings.HasPrefix(inPath, "$") {
+		end := strings.Index(inPath, string(os.PathSeparator))
+		inPath = os.Getenv(inPath[1:end]) + inPath[end:]
+	}
+
+	if filepath.IsAbs(inPath) {
+		return filepath.Clean(inPath)
+	}
+
+	p, err := filepath.Abs(inPath)
+	if err == nil {
+		return filepath.Clean(p)
+	} else {
+		jww.ERROR.Println("Couldn't discover absolute path")
+		jww.ERROR.Println(err)
+	}
+	return ""
+}
+
+// Check if File / Directory Exists
+func exists(path string) (bool, error) {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func stringInSlice(a string, list []string) bool {
+	for _, b := range list {
+		if b == a {
+			return true
+		}
+	}
+	return false
+}
+
+func userHomeDir() string {
+	if runtime.GOOS == "windows" {
+		home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
+		if home == "" {
+			home = os.Getenv("USERPROFILE")
+		}
+		return home
+	}
+	return os.Getenv("HOME")
+}
+
+func findCWD() (string, error) {
+	serverFile, err := filepath.Abs(os.Args[0])
+
+	if err != nil {
+		return "", fmt.Errorf("Can't get absolute path for executable: %v", err)
+	}
+
+	path := filepath.Dir(serverFile)
+	realFile, err := filepath.EvalSymlinks(serverFile)
+
+	if err != nil {
+		if _, err = os.Stat(serverFile + ".exe"); err == nil {
+			realFile = filepath.Clean(serverFile + ".exe")
+		}
+	}
+
+	if err == nil && realFile != serverFile {
+		path = filepath.Dir(realFile)
+	}
+
+	return path, nil
+}
+
+func unmarshallConfigReader(in io.Reader, c map[string]interface{}, configType string) error {
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(in)
+
+	switch strings.ToLower(configType) {
+	case "yaml", "yml":
+		if err := yaml.Unmarshal(buf.Bytes(), &c); err != nil {
+			return ConfigParseError{err}
+		}
+
+	case "json":
+		if err := json.Unmarshal(buf.Bytes(), &c); err != nil {
+			return ConfigParseError{err}
+		}
+
+	case "hcl":
+		obj, err := hcl.Parse(string(buf.Bytes()))
+		if err != nil {
+			return ConfigParseError{err}
+		}
+		if err = hcl.DecodeObject(&c, obj); err != nil {
+			return ConfigParseError{err}
+		}
+
+	case "toml":
+		if _, err := toml.Decode(buf.String(), &c); err != nil {
+			return ConfigParseError{err}
+		}
+
+	case "properties", "props", "prop":
+		var p *properties.Properties
+		var err error
+		if p, err = properties.Load(buf.Bytes(), properties.UTF8); err != nil {
+			return ConfigParseError{err}
+		}
+		for _, key := range p.Keys() {
+			value, _ := p.Get(key)
+			c[key] = value
+		}
+	}
+
+	insensitiviseMap(c)
+	return nil
+}
+
+func safeMul(a, b uint) uint {
+	c := a * b
+	if a > 1 && b > 1 && c/b != a {
+		return 0
+	}
+	return c
+}
+
+// parseSizeInBytes converts strings like 1GB or 12 mb into an unsigned integer number of bytes
+func parseSizeInBytes(sizeStr string) uint {
+	sizeStr = strings.TrimSpace(sizeStr)
+	lastChar := len(sizeStr) - 1
+	multiplier := uint(1)
+
+	if lastChar > 0 {
+		if sizeStr[lastChar] == 'b' || sizeStr[lastChar] == 'B' {
+			if lastChar > 1 {
+				switch unicode.ToLower(rune(sizeStr[lastChar-1])) {
+				case 'k':
+					multiplier = 1 << 10
+					sizeStr = strings.TrimSpace(sizeStr[:lastChar-1])
+				case 'm':
+					multiplier = 1 << 20
+					sizeStr = strings.TrimSpace(sizeStr[:lastChar-1])
+				case 'g':
+					multiplier = 1 << 30
+					sizeStr = strings.TrimSpace(sizeStr[:lastChar-1])
+				default:
+					multiplier = 1
+					sizeStr = strings.TrimSpace(sizeStr[:lastChar])
+				}
+			}
+		}
+	}
+
+	size := cast.ToInt(sizeStr)
+	if size < 0 {
+		size = 0
+	}
+
+	return safeMul(uint(size), multiplier)
+}
diff --git a/vendor/github.com/spf13/viper/viper.go b/vendor/github.com/spf13/viper/viper.go
new file mode 100644
index 0000000..a2633b0
--- /dev/null
+++ b/vendor/github.com/spf13/viper/viper.go
@@ -0,0 +1,1293 @@
+// Copyright © 2014 Steve Francia <spf@spf13.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+// Viper is a application configuration system.
+// It believes that applications can be configured a variety of ways
+// via flags, ENVIRONMENT variables, configuration files retrieved
+// from the file system, or a remote key/value store.
+
+// Each item takes precedence over the item below it:
+
+// overrides
+// flag
+// env
+// config
+// key/value store
+// default
+
+package viper
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"time"
+
+	"github.com/fsnotify/fsnotify"
+	"github.com/mitchellh/mapstructure"
+	"github.com/spf13/cast"
+	jww "github.com/spf13/jwalterweatherman"
+	"github.com/spf13/pflag"
+)
+
+var v *Viper
+
+func init() {
+	v = New()
+}
+
+type remoteConfigFactory interface {
+	Get(rp RemoteProvider) (io.Reader, error)
+	Watch(rp RemoteProvider) (io.Reader, error)
+}
+
+// RemoteConfig is optional, see the remote package
+var RemoteConfig remoteConfigFactory
+
+// Denotes encountering an unsupported
+// configuration filetype.
+type UnsupportedConfigError string
+
+// Returns the formatted configuration error.
+func (str UnsupportedConfigError) Error() string {
+	return fmt.Sprintf("Unsupported Config Type %q", string(str))
+}
+
+// Denotes encountering an unsupported remote
+// provider. Currently only etcd and Consul are
+// supported.
+type UnsupportedRemoteProviderError string
+
+// Returns the formatted remote provider error.
+func (str UnsupportedRemoteProviderError) Error() string {
+	return fmt.Sprintf("Unsupported Remote Provider Type %q", string(str))
+}
+
+// Denotes encountering an error while trying to
+// pull the configuration from the remote provider.
+type RemoteConfigError string
+
+// Returns the formatted remote provider error
+func (rce RemoteConfigError) Error() string {
+	return fmt.Sprintf("Remote Configurations Error: %s", string(rce))
+}
+
+// Denotes failing to find configuration file.
+type ConfigFileNotFoundError struct {
+	name, locations string
+}
+
+// Returns the formatted configuration error.
+func (fnfe ConfigFileNotFoundError) Error() string {
+	return fmt.Sprintf("Config File %q Not Found in %q", fnfe.name, fnfe.locations)
+}
+
+// Viper is a prioritized configuration registry. It
+// maintains a set of configuration sources, fetches
+// values to populate those, and provides them according
+// to the source's priority.
+// The priority of the sources is the following:
+// 1. overrides
+// 2. flags
+// 3. env. variables
+// 4. config file
+// 5. key/value store
+// 6. defaults
+//
+// For example, if values from the following sources were loaded:
+//
+//  Defaults : {
+//  	"secret": "",
+//  	"user": "default",
+// 	"endpoint": "https://localhost"
+//  }
+//  Config : {
+//  	"user": "root"
+//	"secret": "defaultsecret"
+//  }
+//  Env : {
+//  	"secret": "somesecretkey"
+//  }
+//
+// The resulting config will have the following values:
+//
+//	{
+//		"secret": "somesecretkey",
+//		"user": "root",
+//		"endpoint": "https://localhost"
+//	}
+type Viper struct {
+	// Delimiter that separates a list of keys
+	// used to access a nested value in one go
+	keyDelim string
+
+	// A set of paths to look for the config file in
+	configPaths []string
+
+	// A set of remote providers to search for the configuration
+	remoteProviders []*defaultRemoteProvider
+
+	// Name of file to look for inside the path
+	configName string
+	configFile string
+	configType string
+	envPrefix  string
+
+	automaticEnvApplied bool
+	envKeyReplacer      *strings.Replacer
+
+	config         map[string]interface{}
+	override       map[string]interface{}
+	defaults       map[string]interface{}
+	kvstore        map[string]interface{}
+	pflags         map[string]FlagValue
+	env            map[string]string
+	aliases        map[string]string
+	typeByDefValue bool
+
+	onConfigChange func(fsnotify.Event)
+}
+
+// Returns an initialized Viper instance.
+func New() *Viper {
+	v := new(Viper)
+	v.keyDelim = "."
+	v.configName = "config"
+	v.config = make(map[string]interface{})
+	v.override = make(map[string]interface{})
+	v.defaults = make(map[string]interface{})
+	v.kvstore = make(map[string]interface{})
+	v.pflags = make(map[string]FlagValue)
+	v.env = make(map[string]string)
+	v.aliases = make(map[string]string)
+	v.typeByDefValue = false
+
+	return v
+}
+
+// Intended for testing, will reset all to default settings.
+// In the public interface for the viper package so applications
+// can use it in their testing as well.
+func Reset() {
+	v = New()
+	SupportedExts = []string{"json", "toml", "yaml", "yml", "hcl"}
+	SupportedRemoteProviders = []string{"etcd", "consul"}
+}
+
+type defaultRemoteProvider struct {
+	provider      string
+	endpoint      string
+	path          string
+	secretKeyring string
+}
+
+func (rp defaultRemoteProvider) Provider() string {
+	return rp.provider
+}
+
+func (rp defaultRemoteProvider) Endpoint() string {
+	return rp.endpoint
+}
+
+func (rp defaultRemoteProvider) Path() string {
+	return rp.path
+}
+
+func (rp defaultRemoteProvider) SecretKeyring() string {
+	return rp.secretKeyring
+}
+
+// RemoteProvider stores the configuration necessary
+// to connect to a remote key/value store.
+// Optional secretKeyring to unencrypt encrypted values
+// can be provided.
+type RemoteProvider interface {
+	Provider() string
+	Endpoint() string
+	Path() string
+	SecretKeyring() string
+}
+
+// Universally supported extensions.
+var SupportedExts []string = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl"}
+
+// Universally supported remote providers.
+var SupportedRemoteProviders []string = []string{"etcd", "consul"}
+
+func OnConfigChange(run func(in fsnotify.Event)) { v.OnConfigChange(run) }
+func (v *Viper) OnConfigChange(run func(in fsnotify.Event)) {
+	v.onConfigChange = run
+}
+
+func WatchConfig() { v.WatchConfig() }
+func (v *Viper) WatchConfig() {
+	go func() {
+		watcher, err := fsnotify.NewWatcher()
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer watcher.Close()
+
+		// we have to watch the entire directory to pick up renames/atomic saves in a cross-platform way
+		configFile := filepath.Clean(v.getConfigFile())
+		configDir, _ := filepath.Split(configFile)
+
+		done := make(chan bool)
+		go func() {
+			for {
+				select {
+				case event := <-watcher.Events:
+					// we only care about the config file
+					if filepath.Clean(event.Name) == configFile {
+						if event.Op&fsnotify.Write == fsnotify.Write || event.Op&fsnotify.Create == fsnotify.Create {
+							err := v.ReadInConfig()
+							if err != nil {
+								log.Println("error:", err)
+							}
+							v.onConfigChange(event)
+						}
+					}
+				case err := <-watcher.Errors:
+					log.Println("error:", err)
+				}
+			}
+		}()
+
+		watcher.Add(configDir)
+		<-done
+	}()
+}
+
+// Explicitly define the path, name and extension of the config file
+// Viper will use this and not check any of the config paths
+func SetConfigFile(in string) { v.SetConfigFile(in) }
+func (v *Viper) SetConfigFile(in string) {
+	if in != "" {
+		v.configFile = in
+	}
+}
+
+// Define a prefix that ENVIRONMENT variables will use.
+// E.g. if your prefix is "spf", the env registry
+// will look for env. variables that start with "SPF_"
+func SetEnvPrefix(in string) { v.SetEnvPrefix(in) }
+func (v *Viper) SetEnvPrefix(in string) {
+	if in != "" {
+		v.envPrefix = in
+	}
+}
+
+func (v *Viper) mergeWithEnvPrefix(in string) string {
+	if v.envPrefix != "" {
+		return strings.ToUpper(v.envPrefix + "_" + in)
+	}
+
+	return strings.ToUpper(in)
+}
+
+// TODO: should getEnv logic be moved into find(). Can generalize the use of
+// rewriting keys many things, Ex: Get('someKey') -> some_key
+// (cammel case to snake case for JSON keys perhaps)
+
+// getEnv s a wrapper around os.Getenv which replaces characters in the original
+// key. This allows env vars which have different keys then the config object
+// keys
+func (v *Viper) getEnv(key string) string {
+	if v.envKeyReplacer != nil {
+		key = v.envKeyReplacer.Replace(key)
+	}
+	return os.Getenv(key)
+}
+
+// Return the file used to populate the config registry
+func ConfigFileUsed() string            { return v.ConfigFileUsed() }
+func (v *Viper) ConfigFileUsed() string { return v.configFile }
+
+// Add a path for Viper to search for the config file in.
+// Can be called multiple times to define multiple search paths.
+func AddConfigPath(in string) { v.AddConfigPath(in) }
+func (v *Viper) AddConfigPath(in string) {
+	if in != "" {
+		absin := absPathify(in)
+		jww.INFO.Println("adding", absin, "to paths to search")
+		if !stringInSlice(absin, v.configPaths) {
+			v.configPaths = append(v.configPaths, absin)
+		}
+	}
+}
+
+// AddRemoteProvider adds a remote configuration source.
+// Remote Providers are searched in the order they are added.
+// provider is a string value, "etcd" or "consul" are currently supported.
+// endpoint is the url.  etcd requires http://ip:port  consul requires ip:port
+// path is the path in the k/v store to retrieve configuration
+// To retrieve a config file called myapp.json from /configs/myapp.json
+// you should set path to /configs and set config name (SetConfigName()) to
+// "myapp"
+func AddRemoteProvider(provider, endpoint, path string) error {
+	return v.AddRemoteProvider(provider, endpoint, path)
+}
+func (v *Viper) AddRemoteProvider(provider, endpoint, path string) error {
+	if !stringInSlice(provider, SupportedRemoteProviders) {
+		return UnsupportedRemoteProviderError(provider)
+	}
+	if provider != "" && endpoint != "" {
+		jww.INFO.Printf("adding %s:%s to remote provider list", provider, endpoint)
+		rp := &defaultRemoteProvider{
+			endpoint: endpoint,
+			provider: provider,
+			path:     path,
+		}
+		if !v.providerPathExists(rp) {
+			v.remoteProviders = append(v.remoteProviders, rp)
+		}
+	}
+	return nil
+}
+
+// AddSecureRemoteProvider adds a remote configuration source.
+// Secure Remote Providers are searched in the order they are added.
+// provider is a string value, "etcd" or "consul" are currently supported.
+// endpoint is the url.  etcd requires http://ip:port  consul requires ip:port
+// secretkeyring is the filepath to your openpgp secret keyring.  e.g. /etc/secrets/myring.gpg
+// path is the path in the k/v store to retrieve configuration
+// To retrieve a config file called myapp.json from /configs/myapp.json
+// you should set path to /configs and set config name (SetConfigName()) to
+// "myapp"
+// Secure Remote Providers are implemented with github.com/xordataexchange/crypt
+func AddSecureRemoteProvider(provider, endpoint, path, secretkeyring string) error {
+	return v.AddSecureRemoteProvider(provider, endpoint, path, secretkeyring)
+}
+
+func (v *Viper) AddSecureRemoteProvider(provider, endpoint, path, secretkeyring string) error {
+	if !stringInSlice(provider, SupportedRemoteProviders) {
+		return UnsupportedRemoteProviderError(provider)
+	}
+	if provider != "" && endpoint != "" {
+		jww.INFO.Printf("adding %s:%s to remote provider list", provider, endpoint)
+		rp := &defaultRemoteProvider{
+			endpoint:      endpoint,
+			provider:      provider,
+			path:          path,
+			secretKeyring: secretkeyring,
+		}
+		if !v.providerPathExists(rp) {
+			v.remoteProviders = append(v.remoteProviders, rp)
+		}
+	}
+	return nil
+}
+
+func (v *Viper) providerPathExists(p *defaultRemoteProvider) bool {
+	for _, y := range v.remoteProviders {
+		if reflect.DeepEqual(y, p) {
+			return true
+		}
+	}
+	return false
+}
+
+func (v *Viper) searchMap(source map[string]interface{}, path []string) interface{} {
+
+	if len(path) == 0 {
+		return source
+	}
+
+	var ok bool
+	var next interface{}
+	for k, v := range source {
+		if strings.ToLower(k) == strings.ToLower(path[0]) {
+			ok = true
+			next = v
+			break
+		}
+	}
+
+	if ok {
+		switch next.(type) {
+		case map[interface{}]interface{}:
+			return v.searchMap(cast.ToStringMap(next), path[1:])
+		case map[string]interface{}:
+			// Type assertion is safe here since it is only reached
+			// if the type of `next` is the same as the type being asserted
+			return v.searchMap(next.(map[string]interface{}), path[1:])
+		default:
+			return next
+		}
+	} else {
+		return nil
+	}
+}
+
+// SetTypeByDefaultValue enables or disables the inference of a key value's
+// type when the Get function is used based upon a key's default value as
+// opposed to the value returned based on the normal fetch logic.
+//
+// For example, if a key has a default value of []string{} and the same key
+// is set via an environment variable to "a b c", a call to the Get function
+// would return a string slice for the key if the key's type is inferred by
+// the default value and the Get function would return:
+//
+//   []string {"a", "b", "c"}
+//
+// Otherwise the Get function would return:
+//
+//   "a b c"
+func SetTypeByDefaultValue(enable bool) { v.SetTypeByDefaultValue(enable) }
+func (v *Viper) SetTypeByDefaultValue(enable bool) {
+	v.typeByDefValue = enable
+}
+
+// Viper is essentially repository for configurations
+// Get can retrieve any value given the key to use
+// Get has the behavior of returning the value associated with the first
+// place from where it is set. Viper will check in the following order:
+// override, flag, env, config file, key/value store, default
+//
+// Get returns an interface. For a specific value use one of the Get____ methods.
+func Get(key string) interface{} { return v.Get(key) }
+func (v *Viper) Get(key string) interface{} {
+	path := strings.Split(key, v.keyDelim)
+
+	lcaseKey := strings.ToLower(key)
+	val := v.find(lcaseKey)
+
+	if val == nil {
+		source := v.find(strings.ToLower(path[0]))
+		if source != nil {
+			if reflect.TypeOf(source).Kind() == reflect.Map {
+				val = v.searchMap(cast.ToStringMap(source), path[1:])
+			}
+		}
+	}
+
+	// if no other value is returned and a flag does exist for the value,
+	// get the flag's value even if the flag's value has not changed
+	if val == nil {
+		if flag, exists := v.pflags[lcaseKey]; exists {
+			jww.TRACE.Println(key, "get pflag default", val)
+			switch flag.ValueType() {
+			case "int", "int8", "int16", "int32", "int64":
+				val = cast.ToInt(flag.ValueString())
+			case "bool":
+				val = cast.ToBool(flag.ValueString())
+			default:
+				val = flag.ValueString()
+			}
+		}
+	}
+
+	if val == nil {
+		return nil
+	}
+
+	var valType interface{}
+	if !v.typeByDefValue {
+		valType = val
+	} else {
+		defVal, defExists := v.defaults[lcaseKey]
+		if defExists {
+			valType = defVal
+		} else {
+			valType = val
+		}
+	}
+
+	switch valType.(type) {
+	case bool:
+		return cast.ToBool(val)
+	case string:
+		return cast.ToString(val)
+	case int64, int32, int16, int8, int:
+		return cast.ToInt(val)
+	case float64, float32:
+		return cast.ToFloat64(val)
+	case time.Time:
+		return cast.ToTime(val)
+	case time.Duration:
+		return cast.ToDuration(val)
+	case []string:
+		return cast.ToStringSlice(val)
+	}
+	return val
+}
+
+// Returns new Viper instance representing a sub tree of this instance
+func Sub(key string) *Viper { return v.Sub(key) }
+func (v *Viper) Sub(key string) *Viper {
+	subv := New()
+	data := v.Get(key)
+	if reflect.TypeOf(data).Kind() == reflect.Map {
+		subv.config = cast.ToStringMap(data)
+		return subv
+	} else {
+		return nil
+	}
+}
+
+// Returns the value associated with the key as a string
+func GetString(key string) string { return v.GetString(key) }
+func (v *Viper) GetString(key string) string {
+	return cast.ToString(v.Get(key))
+}
+
+// Returns the value associated with the key as a boolean
+func GetBool(key string) bool { return v.GetBool(key) }
+func (v *Viper) GetBool(key string) bool {
+	return cast.ToBool(v.Get(key))
+}
+
+// Returns the value associated with the key as an integer
+func GetInt(key string) int { return v.GetInt(key) }
+func (v *Viper) GetInt(key string) int {
+	return cast.ToInt(v.Get(key))
+}
+
+// Returns the value associated with the key as a float64
+func GetFloat64(key string) float64 { return v.GetFloat64(key) }
+func (v *Viper) GetFloat64(key string) float64 {
+	return cast.ToFloat64(v.Get(key))
+}
+
+// Returns the value associated with the key as time
+func GetTime(key string) time.Time { return v.GetTime(key) }
+func (v *Viper) GetTime(key string) time.Time {
+	return cast.ToTime(v.Get(key))
+}
+
+// Returns the value associated with the key as a duration
+func GetDuration(key string) time.Duration { return v.GetDuration(key) }
+func (v *Viper) GetDuration(key string) time.Duration {
+	return cast.ToDuration(v.Get(key))
+}
+
+// Returns the value associated with the key as a slice of strings
+func GetStringSlice(key string) []string { return v.GetStringSlice(key) }
+func (v *Viper) GetStringSlice(key string) []string {
+	return cast.ToStringSlice(v.Get(key))
+}
+
+// Returns the value associated with the key as a map of interfaces
+func GetStringMap(key string) map[string]interface{} { return v.GetStringMap(key) }
+func (v *Viper) GetStringMap(key string) map[string]interface{} {
+	return cast.ToStringMap(v.Get(key))
+}
+
+// Returns the value associated with the key as a map of strings
+func GetStringMapString(key string) map[string]string { return v.GetStringMapString(key) }
+func (v *Viper) GetStringMapString(key string) map[string]string {
+	return cast.ToStringMapString(v.Get(key))
+}
+
+// Returns the value associated with the key as a map to a slice of strings.
+func GetStringMapStringSlice(key string) map[string][]string { return v.GetStringMapStringSlice(key) }
+func (v *Viper) GetStringMapStringSlice(key string) map[string][]string {
+	return cast.ToStringMapStringSlice(v.Get(key))
+}
+
+// Returns the size of the value associated with the given key
+// in bytes.
+func GetSizeInBytes(key string) uint { return v.GetSizeInBytes(key) }
+func (v *Viper) GetSizeInBytes(key string) uint {
+	sizeStr := cast.ToString(v.Get(key))
+	return parseSizeInBytes(sizeStr)
+}
+
+// Takes a single key and unmarshals it into a Struct
+func UnmarshalKey(key string, rawVal interface{}) error { return v.UnmarshalKey(key, rawVal) }
+func (v *Viper) UnmarshalKey(key string, rawVal interface{}) error {
+	return mapstructure.Decode(v.Get(key), rawVal)
+}
+
+// Unmarshals the config into a Struct. Make sure that the tags
+// on the fields of the structure are properly set.
+func Unmarshal(rawVal interface{}) error { return v.Unmarshal(rawVal) }
+func (v *Viper) Unmarshal(rawVal interface{}) error {
+	err := mapstructure.WeakDecode(v.AllSettings(), rawVal)
+
+	if err != nil {
+		return err
+	}
+
+	v.insensitiviseMaps()
+
+	return nil
+}
+
+// A wrapper around mapstructure.Decode that mimics the WeakDecode functionality
+// while erroring on non existing vals in the destination struct
+func weakDecodeExact(input, output interface{}) error {
+	config := &mapstructure.DecoderConfig{
+		ErrorUnused:      true,
+		Metadata:         nil,
+		Result:           output,
+		WeaklyTypedInput: true,
+	}
+
+	decoder, err := mapstructure.NewDecoder(config)
+	if err != nil {
+		return err
+	}
+	return decoder.Decode(input)
+}
+
+// Unmarshals the config into a Struct, erroring if a field is non-existant
+// in the destination struct
+func (v *Viper) UnmarshalExact(rawVal interface{}) error {
+	err := weakDecodeExact(v.AllSettings(), rawVal)
+
+	if err != nil {
+		return err
+	}
+
+	v.insensitiviseMaps()
+
+	return nil
+}
+
+// Bind a full flag set to the configuration, using each flag's long
+// name as the config key.
+func BindPFlags(flags *pflag.FlagSet) (err error) { return v.BindPFlags(flags) }
+func (v *Viper) BindPFlags(flags *pflag.FlagSet) (err error) {
+	return v.BindFlagValues(pflagValueSet{flags})
+}
+
+// Bind a specific key to a pflag (as used by cobra)
+// Example(where serverCmd is a Cobra instance):
+//
+//	 serverCmd.Flags().Int("port", 1138, "Port to run Application server on")
+//	 Viper.BindPFlag("port", serverCmd.Flags().Lookup("port"))
+//
+func BindPFlag(key string, flag *pflag.Flag) (err error) { return v.BindPFlag(key, flag) }
+func (v *Viper) BindPFlag(key string, flag *pflag.Flag) (err error) {
+	return v.BindFlagValue(key, pflagValue{flag})
+}
+
+// Bind a full FlagValue set to the configuration, using each flag's long
+// name as the config key.
+func BindFlagValues(flags FlagValueSet) (err error) { return v.BindFlagValues(flags) }
+func (v *Viper) BindFlagValues(flags FlagValueSet) (err error) {
+	flags.VisitAll(func(flag FlagValue) {
+		if err = v.BindFlagValue(flag.Name(), flag); err != nil {
+			return
+		}
+	})
+	return nil
+}
+
+// Bind a specific key to a FlagValue.
+// Example(where serverCmd is a Cobra instance):
+//
+//	 serverCmd.Flags().Int("port", 1138, "Port to run Application server on")
+//	 Viper.BindFlagValue("port", serverCmd.Flags().Lookup("port"))
+//
+func BindFlagValue(key string, flag FlagValue) (err error) { return v.BindFlagValue(key, flag) }
+func (v *Viper) BindFlagValue(key string, flag FlagValue) (err error) {
+	if flag == nil {
+		return fmt.Errorf("flag for %q is nil", key)
+	}
+	v.pflags[strings.ToLower(key)] = flag
+	return nil
+}
+
+// Binds a Viper key to a ENV variable
+// ENV variables are case sensitive
+// If only a key is provided, it will use the env key matching the key, uppercased.
+// EnvPrefix will be used when set when env name is not provided.
+func BindEnv(input ...string) (err error) { return v.BindEnv(input...) }
+func (v *Viper) BindEnv(input ...string) (err error) {
+	var key, envkey string
+	if len(input) == 0 {
+		return fmt.Errorf("BindEnv missing key to bind to")
+	}
+
+	key = strings.ToLower(input[0])
+
+	if len(input) == 1 {
+		envkey = v.mergeWithEnvPrefix(key)
+	} else {
+		envkey = input[1]
+	}
+
+	v.env[key] = envkey
+
+	return nil
+}
+
+// Given a key, find the value
+// Viper will check in the following order:
+// flag, env, config file, key/value store, default
+// Viper will check to see if an alias exists first
+func (v *Viper) find(key string) interface{} {
+	var val interface{}
+	var exists bool
+
+	// if the requested key is an alias, then return the proper key
+	key = v.realKey(key)
+
+	// PFlag Override first
+	flag, exists := v.pflags[key]
+	if exists && flag.HasChanged() {
+		jww.TRACE.Println(key, "found in override (via pflag):", flag.ValueString())
+		switch flag.ValueType() {
+		case "int", "int8", "int16", "int32", "int64":
+			return cast.ToInt(flag.ValueString())
+		case "bool":
+			return cast.ToBool(flag.ValueString())
+		default:
+			return flag.ValueString()
+		}
+	}
+
+	val, exists = v.override[key]
+	if exists {
+		jww.TRACE.Println(key, "found in override:", val)
+		return val
+	}
+
+	if v.automaticEnvApplied {
+		// even if it hasn't been registered, if automaticEnv is used,
+		// check any Get request
+		if val = v.getEnv(v.mergeWithEnvPrefix(key)); val != "" {
+			jww.TRACE.Println(key, "found in environment with val:", val)
+			return val
+		}
+	}
+
+	envkey, exists := v.env[key]
+	if exists {
+		jww.TRACE.Println(key, "registered as env var", envkey)
+		if val = v.getEnv(envkey); val != "" {
+			jww.TRACE.Println(envkey, "found in environment with val:", val)
+			return val
+		} else {
+			jww.TRACE.Println(envkey, "env value unset:")
+		}
+	}
+
+	val, exists = v.config[key]
+	if exists {
+		jww.TRACE.Println(key, "found in config:", val)
+		return val
+	}
+
+	// Test for nested config parameter
+	if strings.Contains(key, v.keyDelim) {
+		path := strings.Split(key, v.keyDelim)
+
+		source := v.find(path[0])
+		if source != nil {
+			if reflect.TypeOf(source).Kind() == reflect.Map {
+				val := v.searchMap(cast.ToStringMap(source), path[1:])
+				jww.TRACE.Println(key, "found in nested config:", val)
+				return val
+			}
+		}
+	}
+
+	val, exists = v.kvstore[key]
+	if exists {
+		jww.TRACE.Println(key, "found in key/value store:", val)
+		return val
+	}
+
+	val, exists = v.defaults[key]
+	if exists {
+		jww.TRACE.Println(key, "found in defaults:", val)
+		return val
+	}
+
+	return nil
+}
+
+// Check to see if the key has been set in any of the data locations
+func IsSet(key string) bool { return v.IsSet(key) }
+func (v *Viper) IsSet(key string) bool {
+	path := strings.Split(key, v.keyDelim)
+
+	lcaseKey := strings.ToLower(key)
+	val := v.find(lcaseKey)
+
+	if val == nil {
+		source := v.find(strings.ToLower(path[0]))
+		if source != nil {
+			if reflect.TypeOf(source).Kind() == reflect.Map {
+				val = v.searchMap(cast.ToStringMap(source), path[1:])
+			}
+		}
+	}
+
+	return val != nil
+}
+
+// Have Viper check ENV variables for all
+// keys set in config, default & flags
+func AutomaticEnv() { v.AutomaticEnv() }
+func (v *Viper) AutomaticEnv() {
+	v.automaticEnvApplied = true
+}
+
+// SetEnvKeyReplacer sets the strings.Replacer on the viper object
+// Useful for mapping an environmental variable to a key that does
+// not match it.
+func SetEnvKeyReplacer(r *strings.Replacer) { v.SetEnvKeyReplacer(r) }
+func (v *Viper) SetEnvKeyReplacer(r *strings.Replacer) {
+	v.envKeyReplacer = r
+}
+
+// Aliases provide another accessor for the same key.
+// This enables one to change a name without breaking the application
+func RegisterAlias(alias string, key string) { v.RegisterAlias(alias, key) }
+func (v *Viper) RegisterAlias(alias string, key string) {
+	v.registerAlias(alias, strings.ToLower(key))
+}
+
+func (v *Viper) registerAlias(alias string, key string) {
+	alias = strings.ToLower(alias)
+	if alias != key && alias != v.realKey(key) {
+		_, exists := v.aliases[alias]
+
+		if !exists {
+			// if we alias something that exists in one of the maps to another
+			// name, we'll never be able to get that value using the original
+			// name, so move the config value to the new realkey.
+			if val, ok := v.config[alias]; ok {
+				delete(v.config, alias)
+				v.config[key] = val
+			}
+			if val, ok := v.kvstore[alias]; ok {
+				delete(v.kvstore, alias)
+				v.kvstore[key] = val
+			}
+			if val, ok := v.defaults[alias]; ok {
+				delete(v.defaults, alias)
+				v.defaults[key] = val
+			}
+			if val, ok := v.override[alias]; ok {
+				delete(v.override, alias)
+				v.override[key] = val
+			}
+			v.aliases[alias] = key
+		}
+	} else {
+		jww.WARN.Println("Creating circular reference alias", alias, key, v.realKey(key))
+	}
+}
+
+func (v *Viper) realKey(key string) string {
+	newkey, exists := v.aliases[key]
+	if exists {
+		jww.DEBUG.Println("Alias", key, "to", newkey)
+		return v.realKey(newkey)
+	} else {
+		return key
+	}
+}
+
+// Check to see if the given key (or an alias) is in the config file
+func InConfig(key string) bool { return v.InConfig(key) }
+func (v *Viper) InConfig(key string) bool {
+	// if the requested key is an alias, then return the proper key
+	key = v.realKey(key)
+
+	_, exists := v.config[key]
+	return exists
+}
+
+// Set the default value for this key.
+// Default only used when no value is provided by the user via flag, config or ENV.
+func SetDefault(key string, value interface{}) { v.SetDefault(key, value) }
+func (v *Viper) SetDefault(key string, value interface{}) {
+	// If alias passed in, then set the proper default
+	key = v.realKey(strings.ToLower(key))
+	v.defaults[key] = value
+}
+
+// Sets the value for the key in the override regiser.
+// Will be used instead of values obtained via
+// flags, config file, ENV, default, or key/value store
+func Set(key string, value interface{}) { v.Set(key, value) }
+func (v *Viper) Set(key string, value interface{}) {
+	// If alias passed in, then set the proper override
+	key = v.realKey(strings.ToLower(key))
+	v.override[key] = value
+}
+
+// Viper will discover and load the configuration file from disk
+// and key/value stores, searching in one of the defined paths.
+func ReadInConfig() error { return v.ReadInConfig() }
+func (v *Viper) ReadInConfig() error {
+	jww.INFO.Println("Attempting to read in config file")
+	if !stringInSlice(v.getConfigType(), SupportedExts) {
+		return UnsupportedConfigError(v.getConfigType())
+	}
+
+	file, err := ioutil.ReadFile(v.getConfigFile())
+	if err != nil {
+		return err
+	}
+
+	v.config = make(map[string]interface{})
+
+	return v.unmarshalReader(bytes.NewReader(file), v.config)
+}
+
+// MergeInConfig merges a new configuration with an existing config.
+func MergeInConfig() error { return v.MergeInConfig() }
+func (v *Viper) MergeInConfig() error {
+	jww.INFO.Println("Attempting to merge in config file")
+	if !stringInSlice(v.getConfigType(), SupportedExts) {
+		return UnsupportedConfigError(v.getConfigType())
+	}
+
+	file, err := ioutil.ReadFile(v.getConfigFile())
+	if err != nil {
+		return err
+	}
+
+	return v.MergeConfig(bytes.NewReader(file))
+}
+
+// Viper will read a configuration file, setting existing keys to nil if the
+// key does not exist in the file.
+func ReadConfig(in io.Reader) error { return v.ReadConfig(in) }
+func (v *Viper) ReadConfig(in io.Reader) error {
+	v.config = make(map[string]interface{})
+	return v.unmarshalReader(in, v.config)
+}
+
+// MergeConfig merges a new configuration with an existing config.
+func MergeConfig(in io.Reader) error { return v.MergeConfig(in) }
+func (v *Viper) MergeConfig(in io.Reader) error {
+	if v.config == nil {
+		v.config = make(map[string]interface{})
+	}
+	cfg := make(map[string]interface{})
+	if err := v.unmarshalReader(in, cfg); err != nil {
+		return err
+	}
+	mergeMaps(cfg, v.config, nil)
+	return nil
+}
+
+func keyExists(k string, m map[string]interface{}) string {
+	lk := strings.ToLower(k)
+	for mk := range m {
+		lmk := strings.ToLower(mk)
+		if lmk == lk {
+			return mk
+		}
+	}
+	return ""
+}
+
+func castToMapStringInterface(
+	src map[interface{}]interface{}) map[string]interface{} {
+	tgt := map[string]interface{}{}
+	for k, v := range src {
+		tgt[fmt.Sprintf("%v", k)] = v
+	}
+	return tgt
+}
+
+// mergeMaps merges two maps. The `itgt` parameter is for handling go-yaml's
+// insistence on parsing nested structures as `map[interface{}]interface{}`
+// instead of using a `string` as the key for nest structures beyond one level
+// deep. Both map types are supported as there is a go-yaml fork that uses
+// `map[string]interface{}` instead.
+func mergeMaps(
+	src, tgt map[string]interface{}, itgt map[interface{}]interface{}) {
+	for sk, sv := range src {
+		tk := keyExists(sk, tgt)
+		if tk == "" {
+			jww.TRACE.Printf("tk=\"\", tgt[%s]=%v", sk, sv)
+			tgt[sk] = sv
+			if itgt != nil {
+				itgt[sk] = sv
+			}
+			continue
+		}
+
+		tv, ok := tgt[tk]
+		if !ok {
+			jww.TRACE.Printf("tgt[%s] != ok, tgt[%s]=%v", tk, sk, sv)
+			tgt[sk] = sv
+			if itgt != nil {
+				itgt[sk] = sv
+			}
+			continue
+		}
+
+		svType := reflect.TypeOf(sv)
+		tvType := reflect.TypeOf(tv)
+		if svType != tvType {
+			jww.ERROR.Printf(
+				"svType != tvType; key=%s, st=%v, tt=%v, sv=%v, tv=%v",
+				sk, svType, tvType, sv, tv)
+			continue
+		}
+
+		jww.TRACE.Printf("processing key=%s, st=%v, tt=%v, sv=%v, tv=%v",
+			sk, svType, tvType, sv, tv)
+
+		switch ttv := tv.(type) {
+		case map[interface{}]interface{}:
+			jww.TRACE.Printf("merging maps (must convert)")
+			tsv := sv.(map[interface{}]interface{})
+			ssv := castToMapStringInterface(tsv)
+			stv := castToMapStringInterface(ttv)
+			mergeMaps(ssv, stv, ttv)
+		case map[string]interface{}:
+			jww.TRACE.Printf("merging maps")
+			mergeMaps(sv.(map[string]interface{}), ttv, nil)
+		default:
+			jww.TRACE.Printf("setting value")
+			tgt[tk] = sv
+			if itgt != nil {
+				itgt[tk] = sv
+			}
+		}
+	}
+}
+
+// func ReadBufConfig(buf *bytes.Buffer) error { return v.ReadBufConfig(buf) }
+// func (v *Viper) ReadBufConfig(buf *bytes.Buffer) error {
+// 	v.config = make(map[string]interface{})
+// 	return v.unmarshalReader(buf, v.config)
+// }
+
+// Attempts to get configuration from a remote source
+// and read it in the remote configuration registry.
+func ReadRemoteConfig() error { return v.ReadRemoteConfig() }
+func (v *Viper) ReadRemoteConfig() error {
+	err := v.getKeyValueConfig()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func WatchRemoteConfig() error { return v.WatchRemoteConfig() }
+func (v *Viper) WatchRemoteConfig() error {
+	err := v.watchKeyValueConfig()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// Unmarshall a Reader into a map
+// Should probably be an unexported function
+func unmarshalReader(in io.Reader, c map[string]interface{}) error {
+	return v.unmarshalReader(in, c)
+}
+
+func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
+	return unmarshallConfigReader(in, c, v.getConfigType())
+}
+
+func (v *Viper) insensitiviseMaps() {
+	insensitiviseMap(v.config)
+	insensitiviseMap(v.defaults)
+	insensitiviseMap(v.override)
+	insensitiviseMap(v.kvstore)
+}
+
+// retrieve the first found remote configuration
+func (v *Viper) getKeyValueConfig() error {
+	if RemoteConfig == nil {
+		return RemoteConfigError("Enable the remote features by doing a blank import of the viper/remote package: '_ github.com/spf13/viper/remote'")
+	}
+
+	for _, rp := range v.remoteProviders {
+		val, err := v.getRemoteConfig(rp)
+		if err != nil {
+			continue
+		}
+		v.kvstore = val
+		return nil
+	}
+	return RemoteConfigError("No Files Found")
+}
+
+func (v *Viper) getRemoteConfig(provider *defaultRemoteProvider) (map[string]interface{}, error) {
+
+	reader, err := RemoteConfig.Get(provider)
+	if err != nil {
+		return nil, err
+	}
+	err = v.unmarshalReader(reader, v.kvstore)
+	return v.kvstore, err
+}
+
+// retrieve the first found remote configuration
+func (v *Viper) watchKeyValueConfig() error {
+	for _, rp := range v.remoteProviders {
+		val, err := v.watchRemoteConfig(rp)
+		if err != nil {
+			continue
+		}
+		v.kvstore = val
+		return nil
+	}
+	return RemoteConfigError("No Files Found")
+}
+
+func (v *Viper) watchRemoteConfig(provider *defaultRemoteProvider) (map[string]interface{}, error) {
+	reader, err := RemoteConfig.Watch(provider)
+	if err != nil {
+		return nil, err
+	}
+	err = v.unmarshalReader(reader, v.kvstore)
+	return v.kvstore, err
+}
+
+// Return all keys regardless where they are set
+func AllKeys() []string { return v.AllKeys() }
+func (v *Viper) AllKeys() []string {
+	m := map[string]struct{}{}
+
+	for key, _ := range v.defaults {
+		m[strings.ToLower(key)] = struct{}{}
+	}
+
+	for key, _ := range v.pflags {
+		m[strings.ToLower(key)] = struct{}{}
+	}
+
+	for key, _ := range v.env {
+		m[strings.ToLower(key)] = struct{}{}
+	}
+
+	for key, _ := range v.config {
+		m[strings.ToLower(key)] = struct{}{}
+	}
+
+	for key, _ := range v.kvstore {
+		m[strings.ToLower(key)] = struct{}{}
+	}
+
+	for key, _ := range v.override {
+		m[strings.ToLower(key)] = struct{}{}
+	}
+
+	for key, _ := range v.aliases {
+		m[strings.ToLower(key)] = struct{}{}
+	}
+
+	a := []string{}
+	for x, _ := range m {
+		a = append(a, x)
+	}
+
+	return a
+}
+
+// Return all settings as a map[string]interface{}
+func AllSettings() map[string]interface{} { return v.AllSettings() }
+func (v *Viper) AllSettings() map[string]interface{} {
+	m := map[string]interface{}{}
+	for _, x := range v.AllKeys() {
+		m[x] = v.Get(x)
+	}
+
+	return m
+}
+
+// Name for the config file.
+// Does not include extension.
+func SetConfigName(in string) { v.SetConfigName(in) }
+func (v *Viper) SetConfigName(in string) {
+	if in != "" {
+		v.configName = in
+	}
+}
+
+// Sets the type of the configuration returned by the
+// remote source, e.g. "json".
+func SetConfigType(in string) { v.SetConfigType(in) }
+func (v *Viper) SetConfigType(in string) {
+	if in != "" {
+		v.configType = in
+	}
+}
+
+func (v *Viper) getConfigType() string {
+	if v.configType != "" {
+		return v.configType
+	}
+
+	cf := v.getConfigFile()
+	ext := filepath.Ext(cf)
+
+	if len(ext) > 1 {
+		return ext[1:]
+	} else {
+		return ""
+	}
+}
+
+func (v *Viper) getConfigFile() string {
+	// if explicitly set, then use it
+	if v.configFile != "" {
+		return v.configFile
+	}
+
+	cf, err := v.findConfigFile()
+	if err != nil {
+		return ""
+	}
+
+	v.configFile = cf
+	return v.getConfigFile()
+}
+
+func (v *Viper) searchInPath(in string) (filename string) {
+	jww.DEBUG.Println("Searching for config in ", in)
+	for _, ext := range SupportedExts {
+		jww.DEBUG.Println("Checking for", filepath.Join(in, v.configName+"."+ext))
+		if b, _ := exists(filepath.Join(in, v.configName+"."+ext)); b {
+			jww.DEBUG.Println("Found: ", filepath.Join(in, v.configName+"."+ext))
+			return filepath.Join(in, v.configName+"."+ext)
+		}
+	}
+
+	return ""
+}
+
+// search all configPaths for any config file.
+// Returns the first path that exists (and is a config file)
+func (v *Viper) findConfigFile() (string, error) {
+
+	jww.INFO.Println("Searching for config in ", v.configPaths)
+
+	for _, cp := range v.configPaths {
+		file := v.searchInPath(cp)
+		if file != "" {
+			return file, nil
+		}
+	}
+	return "", ConfigFileNotFoundError{v.configName, fmt.Sprintf("%s", v.configPaths)}
+}
+
+// Prints all configuration registries for debugging
+// purposes.
+func Debug() { v.Debug() }
+func (v *Viper) Debug() {
+	fmt.Println("Aliases:")
+	fmt.Printf("Aliases:\n%#v\n", v.aliases)
+	fmt.Printf("Override:\n%#v\n", v.override)
+	fmt.Printf("PFlags:\n%#v\n", v.pflags)
+	fmt.Printf("Env:\n%#v\n", v.env)
+	fmt.Printf("Key/Value Store:\n%#v\n", v.kvstore)
+	fmt.Printf("Config:\n%#v\n", v.config)
+	fmt.Printf("Defaults:\n%#v\n", v.defaults)
+}
diff --git a/vendor/github.com/stretchr/testify/LICENSE b/vendor/github.com/stretchr/testify/LICENSE
new file mode 100644
index 0000000..473b670
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2012 - 2013 Mat Ryer and Tyler Bunnell
+
+Please consider promoting this project if you find it useful.
+
+Permission is hereby granted, free of charge, to any person 
+obtaining a copy of this software and associated documentation 
+files (the "Software"), to deal in the Software without restriction, 
+including without limitation the rights to use, copy, modify, merge, 
+publish, distribute, sublicense, and/or sell copies of the Software, 
+and to permit persons to whom the Software is furnished to do so, 
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT 
+OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
+OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/stretchr/testify/assert/assertion_forward.go b/vendor/github.com/stretchr/testify/assert/assertion_forward.go
new file mode 100644
index 0000000..e6a7960
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertion_forward.go
@@ -0,0 +1,387 @@
+/*
+* CODE GENERATED AUTOMATICALLY WITH github.com/stretchr/testify/_codegen
+* THIS FILE MUST NOT BE EDITED BY HAND
+*/
+
+package assert
+
+import (
+
+	http "net/http"
+	url "net/url"
+	time "time"
+)
+
+
+// Condition uses a Comparison to assert a complex condition.
+func (a *Assertions) Condition(comp Comparison, msgAndArgs ...interface{}) bool {
+	return Condition(a.t, comp, msgAndArgs...)
+}
+
+
+// Contains asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+// 
+//    a.Contains("Hello World", "World", "But 'Hello World' does contain 'World'")
+//    a.Contains(["Hello", "World"], "World", "But ["Hello", "World"] does contain 'World'")
+//    a.Contains({"Hello": "World"}, "Hello", "But {'Hello': 'World'} does contain 'Hello'")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
+	return Contains(a.t, s, contains, msgAndArgs...)
+}
+
+
+// Empty asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+// 
+//  a.Empty(obj)
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool {
+	return Empty(a.t, object, msgAndArgs...)
+}
+
+
+// Equal asserts that two objects are equal.
+// 
+//    a.Equal(123, 123, "123 and 123 should be equal")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return Equal(a.t, expected, actual, msgAndArgs...)
+}
+
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+// 
+//   actualObj, err := SomeFunction()
+//   if assert.Error(t, err, "An error was expected") {
+// 	   assert.Equal(t, err, expectedError)
+//   }
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) bool {
+	return EqualError(a.t, theError, errString, msgAndArgs...)
+}
+
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+// 
+//    a.EqualValues(uint32(123), int32(123), "123 and 123 should be equal")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return EqualValues(a.t, expected, actual, msgAndArgs...)
+}
+
+
+// Error asserts that a function returned an error (i.e. not `nil`).
+// 
+//   actualObj, err := SomeFunction()
+//   if a.Error(err, "An error was expected") {
+// 	   assert.Equal(t, err, expectedError)
+//   }
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool {
+	return Error(a.t, err, msgAndArgs...)
+}
+
+
+// Exactly asserts that two objects are equal is value and type.
+// 
+//    a.Exactly(int32(123), int64(123), "123 and 123 should NOT be equal")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return Exactly(a.t, expected, actual, msgAndArgs...)
+}
+
+
+// Fail reports a failure through
+func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) bool {
+	return Fail(a.t, failureMessage, msgAndArgs...)
+}
+
+
+// FailNow fails test
+func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) bool {
+	return FailNow(a.t, failureMessage, msgAndArgs...)
+}
+
+
+// False asserts that the specified value is false.
+// 
+//    a.False(myBool, "myBool should be false")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool {
+	return False(a.t, value, msgAndArgs...)
+}
+
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+// 
+//  a.HTTPBodyContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}) bool {
+	return HTTPBodyContains(a.t, handler, method, url, values, str)
+}
+
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+// 
+//  a.HTTPBodyNotContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}) bool {
+	return HTTPBodyNotContains(a.t, handler, method, url, values, str)
+}
+
+
+// HTTPError asserts that a specified handler returns an error status code.
+// 
+//  a.HTTPError(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values) bool {
+	return HTTPError(a.t, handler, method, url, values)
+}
+
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+// 
+//  a.HTTPRedirect(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values) bool {
+	return HTTPRedirect(a.t, handler, method, url, values)
+}
+
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+// 
+//  a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values) bool {
+	return HTTPSuccess(a.t, handler, method, url, values)
+}
+
+
+// Implements asserts that an object is implemented by the specified interface.
+// 
+//    a.Implements((*MyInterface)(nil), new(MyObject), "MyObject")
+func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+	return Implements(a.t, interfaceObject, object, msgAndArgs...)
+}
+
+
+// InDelta asserts that the two numerals are within delta of each other.
+// 
+// 	 a.InDelta(math.Pi, (22 / 7.0), 0.01)
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+	return InDelta(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+
+// InDeltaSlice is the same as InDelta, except it compares two slices.
+func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+	return InDeltaSlice(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+
+// InEpsilon asserts that expected and actual have a relative error less than epsilon
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+	return InEpsilon(a.t, expected, actual, epsilon, msgAndArgs...)
+}
+
+
+// InEpsilonSlice is the same as InEpsilon, except it compares two slices.
+func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+	return InEpsilonSlice(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+
+// IsType asserts that the specified objects are of the same type.
+func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+	return IsType(a.t, expectedType, object, msgAndArgs...)
+}
+
+
+// JSONEq asserts that two JSON strings are equivalent.
+// 
+//  a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) bool {
+	return JSONEq(a.t, expected, actual, msgAndArgs...)
+}
+
+
+// Len asserts that the specified object has specific length.
+// Len also fails if the object has a type that len() not accept.
+// 
+//    a.Len(mySlice, 3, "The size of slice is not 3")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) bool {
+	return Len(a.t, object, length, msgAndArgs...)
+}
+
+
+// Nil asserts that the specified object is nil.
+// 
+//    a.Nil(err, "err should be nothing")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool {
+	return Nil(a.t, object, msgAndArgs...)
+}
+
+
+// NoError asserts that a function returned no error (i.e. `nil`).
+// 
+//   actualObj, err := SomeFunction()
+//   if a.NoError(err) {
+// 	   assert.Equal(t, actualObj, expectedObj)
+//   }
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool {
+	return NoError(a.t, err, msgAndArgs...)
+}
+
+
+// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+// 
+//    a.NotContains("Hello World", "Earth", "But 'Hello World' does NOT contain 'Earth'")
+//    a.NotContains(["Hello", "World"], "Earth", "But ['Hello', 'World'] does NOT contain 'Earth'")
+//    a.NotContains({"Hello": "World"}, "Earth", "But {'Hello': 'World'} does NOT contain 'Earth'")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
+	return NotContains(a.t, s, contains, msgAndArgs...)
+}
+
+
+// NotEmpty asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+// 
+//  if a.NotEmpty(obj) {
+//    assert.Equal(t, "two", obj[1])
+//  }
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) bool {
+	return NotEmpty(a.t, object, msgAndArgs...)
+}
+
+
+// NotEqual asserts that the specified values are NOT equal.
+// 
+//    a.NotEqual(obj1, obj2, "two objects shouldn't be equal")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
+	return NotEqual(a.t, expected, actual, msgAndArgs...)
+}
+
+
+// NotNil asserts that the specified object is not nil.
+// 
+//    a.NotNil(err, "err should be something")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool {
+	return NotNil(a.t, object, msgAndArgs...)
+}
+
+
+// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
+// 
+//   a.NotPanics(func(){
+//     RemainCalm()
+//   }, "Calling RemainCalm() should NOT panic")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
+	return NotPanics(a.t, f, msgAndArgs...)
+}
+
+
+// NotRegexp asserts that a specified regexp does not match a string.
+// 
+//  a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
+//  a.NotRegexp("^start", "it's not starting")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+	return NotRegexp(a.t, rx, str, msgAndArgs...)
+}
+
+
+// NotZero asserts that i is not the zero value for its type and returns the truth.
+func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) bool {
+	return NotZero(a.t, i, msgAndArgs...)
+}
+
+
+// Panics asserts that the code inside the specified PanicTestFunc panics.
+// 
+//   a.Panics(func(){
+//     GoCrazy()
+//   }, "Calling GoCrazy() should panic")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
+	return Panics(a.t, f, msgAndArgs...)
+}
+
+
+// Regexp asserts that a specified regexp matches a string.
+// 
+//  a.Regexp(regexp.MustCompile("start"), "it's starting")
+//  a.Regexp("start...$", "it's not starting")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+	return Regexp(a.t, rx, str, msgAndArgs...)
+}
+
+
+// True asserts that the specified value is true.
+// 
+//    a.True(myBool, "myBool should be true")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool {
+	return True(a.t, value, msgAndArgs...)
+}
+
+
+// WithinDuration asserts that the two times are within duration delta of each other.
+// 
+//   a.WithinDuration(time.Now(), time.Now(), 10*time.Second, "The difference should not be more than 10s")
+// 
+// Returns whether the assertion was successful (true) or not (false).
+func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
+	return WithinDuration(a.t, expected, actual, delta, msgAndArgs...)
+}
+
+
+// Zero asserts that i is the zero value for its type and returns the truth.
+func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) bool {
+	return Zero(a.t, i, msgAndArgs...)
+}
diff --git a/vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl b/vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl
new file mode 100644
index 0000000..99f9acf
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertion_forward.go.tmpl
@@ -0,0 +1,4 @@
+{{.CommentWithoutT "a"}}
+func (a *Assertions) {{.DocInfo.Name}}({{.Params}}) bool {
+	return {{.DocInfo.Name}}(a.t, {{.ForwardedParams}})
+}
diff --git a/vendor/github.com/stretchr/testify/assert/assertions.go b/vendor/github.com/stretchr/testify/assert/assertions.go
new file mode 100644
index 0000000..d7c16c5
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/assertions.go
@@ -0,0 +1,1004 @@
+package assert
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"math"
+	"reflect"
+	"regexp"
+	"runtime"
+	"strings"
+	"time"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/davecgh/go-spew/spew"
+	"github.com/pmezard/go-difflib/difflib"
+)
+
+// TestingT is an interface wrapper around *testing.T
+type TestingT interface {
+	Errorf(format string, args ...interface{})
+}
+
+// Comparison a custom function that returns true on success and false on failure
+type Comparison func() (success bool)
+
+/*
+	Helper functions
+*/
+
+// ObjectsAreEqual determines if two objects are considered equal.
+//
+// This function does no assertion of any kind.
+func ObjectsAreEqual(expected, actual interface{}) bool {
+
+	if expected == nil || actual == nil {
+		return expected == actual
+	}
+
+	return reflect.DeepEqual(expected, actual)
+
+}
+
+// ObjectsAreEqualValues gets whether two objects are equal, or if their
+// values are equal.
+func ObjectsAreEqualValues(expected, actual interface{}) bool {
+	if ObjectsAreEqual(expected, actual) {
+		return true
+	}
+
+	actualType := reflect.TypeOf(actual)
+	if actualType == nil {
+		return false
+	}
+	expectedValue := reflect.ValueOf(expected)
+	if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
+		// Attempt comparison after type conversion
+		return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
+	}
+
+	return false
+}
+
+/* CallerInfo is necessary because the assert functions use the testing object
+internally, causing it to print the file:line of the assert method, rather than where
+the problem actually occured in calling code.*/
+
+// CallerInfo returns an array of strings containing the file and line number
+// of each stack frame leading from the current test to the assert call that
+// failed.
+func CallerInfo() []string {
+
+	pc := uintptr(0)
+	file := ""
+	line := 0
+	ok := false
+	name := ""
+
+	callers := []string{}
+	for i := 0; ; i++ {
+		pc, file, line, ok = runtime.Caller(i)
+		if !ok {
+			return nil
+		}
+
+		// This is a huge edge case, but it will panic if this is the case, see #180
+		if file == "<autogenerated>" {
+			break
+		}
+
+		parts := strings.Split(file, "/")
+		dir := parts[len(parts)-2]
+		file = parts[len(parts)-1]
+		if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
+			callers = append(callers, fmt.Sprintf("%s:%d", file, line))
+		}
+
+		f := runtime.FuncForPC(pc)
+		if f == nil {
+			break
+		}
+		name = f.Name()
+		// Drop the package
+		segments := strings.Split(name, ".")
+		name = segments[len(segments)-1]
+		if isTest(name, "Test") ||
+			isTest(name, "Benchmark") ||
+			isTest(name, "Example") {
+			break
+		}
+	}
+
+	return callers
+}
+
+// Stolen from the `go test` tool.
+// isTest tells whether name looks like a test (or benchmark, according to prefix).
+// It is a Test (say) if there is a character after Test that is not a lower-case letter.
+// We don't want TesticularCancer.
+func isTest(name, prefix string) bool {
+	if !strings.HasPrefix(name, prefix) {
+		return false
+	}
+	if len(name) == len(prefix) { // "Test" is ok
+		return true
+	}
+	rune, _ := utf8.DecodeRuneInString(name[len(prefix):])
+	return !unicode.IsLower(rune)
+}
+
+// getWhitespaceString returns a string that is long enough to overwrite the default
+// output from the go testing framework.
+func getWhitespaceString() string {
+
+	_, file, line, ok := runtime.Caller(1)
+	if !ok {
+		return ""
+	}
+	parts := strings.Split(file, "/")
+	file = parts[len(parts)-1]
+
+	return strings.Repeat(" ", len(fmt.Sprintf("%s:%d:      ", file, line)))
+
+}
+
+func messageFromMsgAndArgs(msgAndArgs ...interface{}) string {
+	if len(msgAndArgs) == 0 || msgAndArgs == nil {
+		return ""
+	}
+	if len(msgAndArgs) == 1 {
+		return msgAndArgs[0].(string)
+	}
+	if len(msgAndArgs) > 1 {
+		return fmt.Sprintf(msgAndArgs[0].(string), msgAndArgs[1:]...)
+	}
+	return ""
+}
+
+// Indents all lines of the message by appending a number of tabs to each line, in an output format compatible with Go's
+// test printing (see inner comment for specifics)
+func indentMessageLines(message string, tabs int) string {
+	outBuf := new(bytes.Buffer)
+
+	for i, scanner := 0, bufio.NewScanner(strings.NewReader(message)); scanner.Scan(); i++ {
+		if i != 0 {
+			outBuf.WriteRune('\n')
+		}
+		for ii := 0; ii < tabs; ii++ {
+			outBuf.WriteRune('\t')
+			// Bizarrely, all lines except the first need one fewer tabs prepended, so deliberately advance the counter
+			// by 1 prematurely.
+			if ii == 0 && i > 0 {
+				ii++
+			}
+		}
+		outBuf.WriteString(scanner.Text())
+	}
+
+	return outBuf.String()
+}
+
+type failNower interface {
+	FailNow()
+}
+
+// FailNow fails test
+func FailNow(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
+	Fail(t, failureMessage, msgAndArgs...)
+
+	// We cannot extend TestingT with FailNow() and
+	// maintain backwards compatibility, so we fallback
+	// to panicking when FailNow is not available in
+	// TestingT.
+	// See issue #263
+
+	if t, ok := t.(failNower); ok {
+		t.FailNow()
+	} else {
+		panic("test failed and t is missing `FailNow()`")
+	}
+	return false
+}
+
+// Fail reports a failure through
+func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
+
+	message := messageFromMsgAndArgs(msgAndArgs...)
+
+	errorTrace := strings.Join(CallerInfo(), "\n\r\t\t\t")
+	if len(message) > 0 {
+		t.Errorf("\r%s\r\tError Trace:\t%s\n"+
+			"\r\tError:%s\n"+
+			"\r\tMessages:\t%s\n\r",
+			getWhitespaceString(),
+			errorTrace,
+			indentMessageLines(failureMessage, 2),
+			message)
+	} else {
+		t.Errorf("\r%s\r\tError Trace:\t%s\n"+
+			"\r\tError:%s\n\r",
+			getWhitespaceString(),
+			errorTrace,
+			indentMessageLines(failureMessage, 2))
+	}
+
+	return false
+}
+
+// Implements asserts that an object is implemented by the specified interface.
+//
+//    assert.Implements(t, (*MyInterface)(nil), new(MyObject), "MyObject")
+func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+
+	interfaceType := reflect.TypeOf(interfaceObject).Elem()
+
+	if !reflect.TypeOf(object).Implements(interfaceType) {
+		return Fail(t, fmt.Sprintf("%T must implement %v", object, interfaceType), msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// IsType asserts that the specified objects are of the same type.
+func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+
+	if !ObjectsAreEqual(reflect.TypeOf(object), reflect.TypeOf(expectedType)) {
+		return Fail(t, fmt.Sprintf("Object expected to be of type %v, but was %v", reflect.TypeOf(expectedType), reflect.TypeOf(object)), msgAndArgs...)
+	}
+
+	return true
+}
+
+// Equal asserts that two objects are equal.
+//
+//    assert.Equal(t, 123, 123, "123 and 123 should be equal")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+
+	if !ObjectsAreEqual(expected, actual) {
+		diff := diff(expected, actual)
+		return Fail(t, fmt.Sprintf("Not equal: %#v (expected)\n"+
+			"        != %#v (actual)%s", expected, actual, diff), msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+//    assert.EqualValues(t, uint32(123), int32(123), "123 and 123 should be equal")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+
+	if !ObjectsAreEqualValues(expected, actual) {
+		return Fail(t, fmt.Sprintf("Not equal: %#v (expected)\n"+
+			"        != %#v (actual)", expected, actual), msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// Exactly asserts that two objects are equal is value and type.
+//
+//    assert.Exactly(t, int32(123), int64(123), "123 and 123 should NOT be equal")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+
+	aType := reflect.TypeOf(expected)
+	bType := reflect.TypeOf(actual)
+
+	if aType != bType {
+		return Fail(t, fmt.Sprintf("Types expected to match exactly\n\r\t%v != %v", aType, bType), msgAndArgs...)
+	}
+
+	return Equal(t, expected, actual, msgAndArgs...)
+
+}
+
+// NotNil asserts that the specified object is not nil.
+//
+//    assert.NotNil(t, err, "err should be something")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+	if !isNil(object) {
+		return true
+	}
+	return Fail(t, "Expected value not to be nil.", msgAndArgs...)
+}
+
+// isNil checks if a specified object is nil or not, without Failing.
+func isNil(object interface{}) bool {
+	if object == nil {
+		return true
+	}
+
+	value := reflect.ValueOf(object)
+	kind := value.Kind()
+	if kind >= reflect.Chan && kind <= reflect.Slice && value.IsNil() {
+		return true
+	}
+
+	return false
+}
+
+// Nil asserts that the specified object is nil.
+//
+//    assert.Nil(t, err, "err should be nothing")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+	if isNil(object) {
+		return true
+	}
+	return Fail(t, fmt.Sprintf("Expected nil, but got: %#v", object), msgAndArgs...)
+}
+
+var numericZeros = []interface{}{
+	int(0),
+	int8(0),
+	int16(0),
+	int32(0),
+	int64(0),
+	uint(0),
+	uint8(0),
+	uint16(0),
+	uint32(0),
+	uint64(0),
+	float32(0),
+	float64(0),
+}
+
+// isEmpty gets whether the specified object is considered empty or not.
+func isEmpty(object interface{}) bool {
+
+	if object == nil {
+		return true
+	} else if object == "" {
+		return true
+	} else if object == false {
+		return true
+	}
+
+	for _, v := range numericZeros {
+		if object == v {
+			return true
+		}
+	}
+
+	objValue := reflect.ValueOf(object)
+
+	switch objValue.Kind() {
+	case reflect.Map:
+		fallthrough
+	case reflect.Slice, reflect.Chan:
+		{
+			return (objValue.Len() == 0)
+		}
+	case reflect.Struct:
+		switch object.(type) {
+		case time.Time:
+			return object.(time.Time).IsZero()
+		}
+	case reflect.Ptr:
+		{
+			if objValue.IsNil() {
+				return true
+			}
+			switch object.(type) {
+			case *time.Time:
+				return object.(*time.Time).IsZero()
+			default:
+				return false
+			}
+		}
+	}
+	return false
+}
+
+// Empty asserts that the specified object is empty.  I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  assert.Empty(t, obj)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+
+	pass := isEmpty(object)
+	if !pass {
+		Fail(t, fmt.Sprintf("Should be empty, but was %v", object), msgAndArgs...)
+	}
+
+	return pass
+
+}
+
+// NotEmpty asserts that the specified object is NOT empty.  I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+//  if assert.NotEmpty(t, obj) {
+//    assert.Equal(t, "two", obj[1])
+//  }
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+
+	pass := !isEmpty(object)
+	if !pass {
+		Fail(t, fmt.Sprintf("Should NOT be empty, but was %v", object), msgAndArgs...)
+	}
+
+	return pass
+
+}
+
+// getLen try to get length of object.
+// return (false, 0) if impossible.
+func getLen(x interface{}) (ok bool, length int) {
+	v := reflect.ValueOf(x)
+	defer func() {
+		if e := recover(); e != nil {
+			ok = false
+		}
+	}()
+	return true, v.Len()
+}
+
+// Len asserts that the specified object has specific length.
+// Len also fails if the object has a type that len() not accept.
+//
+//    assert.Len(t, mySlice, 3, "The size of slice is not 3")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool {
+	ok, l := getLen(object)
+	if !ok {
+		return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", object), msgAndArgs...)
+	}
+
+	if l != length {
+		return Fail(t, fmt.Sprintf("\"%s\" should have %d item(s), but has %d", object, length, l), msgAndArgs...)
+	}
+	return true
+}
+
+// True asserts that the specified value is true.
+//
+//    assert.True(t, myBool, "myBool should be true")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func True(t TestingT, value bool, msgAndArgs ...interface{}) bool {
+
+	if value != true {
+		return Fail(t, "Should be true", msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// False asserts that the specified value is false.
+//
+//    assert.False(t, myBool, "myBool should be false")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func False(t TestingT, value bool, msgAndArgs ...interface{}) bool {
+
+	if value != false {
+		return Fail(t, "Should be false", msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// NotEqual asserts that the specified values are NOT equal.
+//
+//    assert.NotEqual(t, obj1, obj2, "two objects shouldn't be equal")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+
+	if ObjectsAreEqual(expected, actual) {
+		return Fail(t, fmt.Sprintf("Should not be: %#v\n", actual), msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// containsElement try loop over the list check if the list includes the element.
+// return (false, false) if impossible.
+// return (true, false) if element was not found.
+// return (true, true) if element was found.
+func includeElement(list interface{}, element interface{}) (ok, found bool) {
+
+	listValue := reflect.ValueOf(list)
+	elementValue := reflect.ValueOf(element)
+	defer func() {
+		if e := recover(); e != nil {
+			ok = false
+			found = false
+		}
+	}()
+
+	if reflect.TypeOf(list).Kind() == reflect.String {
+		return true, strings.Contains(listValue.String(), elementValue.String())
+	}
+
+	if reflect.TypeOf(list).Kind() == reflect.Map {
+		mapKeys := listValue.MapKeys()
+		for i := 0; i < len(mapKeys); i++ {
+			if ObjectsAreEqual(mapKeys[i].Interface(), element) {
+				return true, true
+			}
+		}
+		return true, false
+	}
+
+	for i := 0; i < listValue.Len(); i++ {
+		if ObjectsAreEqual(listValue.Index(i).Interface(), element) {
+			return true, true
+		}
+	}
+	return true, false
+
+}
+
+// Contains asserts that the specified string, list(array, slice...) or map contains the
+// specified substring or element.
+//
+//    assert.Contains(t, "Hello World", "World", "But 'Hello World' does contain 'World'")
+//    assert.Contains(t, ["Hello", "World"], "World", "But ["Hello", "World"] does contain 'World'")
+//    assert.Contains(t, {"Hello": "World"}, "Hello", "But {'Hello': 'World'} does contain 'Hello'")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
+
+	ok, found := includeElement(s, contains)
+	if !ok {
+		return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
+	}
+	if !found {
+		return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", s, contains), msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
+// specified substring or element.
+//
+//    assert.NotContains(t, "Hello World", "Earth", "But 'Hello World' does NOT contain 'Earth'")
+//    assert.NotContains(t, ["Hello", "World"], "Earth", "But ['Hello', 'World'] does NOT contain 'Earth'")
+//    assert.NotContains(t, {"Hello": "World"}, "Earth", "But {'Hello': 'World'} does NOT contain 'Earth'")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
+
+	ok, found := includeElement(s, contains)
+	if !ok {
+		return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
+	}
+	if found {
+		return Fail(t, fmt.Sprintf("\"%s\" should not contain \"%s\"", s, contains), msgAndArgs...)
+	}
+
+	return true
+
+}
+
+// Condition uses a Comparison to assert a complex condition.
+func Condition(t TestingT, comp Comparison, msgAndArgs ...interface{}) bool {
+	result := comp()
+	if !result {
+		Fail(t, "Condition failed!", msgAndArgs...)
+	}
+	return result
+}
+
+// PanicTestFunc defines a func that should be passed to the assert.Panics and assert.NotPanics
+// methods, and represents a simple func that takes no arguments, and returns nothing.
+type PanicTestFunc func()
+
+// didPanic returns true if the function passed to it panics. Otherwise, it returns false.
+func didPanic(f PanicTestFunc) (bool, interface{}) {
+
+	didPanic := false
+	var message interface{}
+	func() {
+
+		defer func() {
+			if message = recover(); message != nil {
+				didPanic = true
+			}
+		}()
+
+		// call the target function
+		f()
+
+	}()
+
+	return didPanic, message
+
+}
+
+// Panics asserts that the code inside the specified PanicTestFunc panics.
+//
+//   assert.Panics(t, func(){
+//     GoCrazy()
+//   }, "Calling GoCrazy() should panic")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
+
+	if funcDidPanic, panicValue := didPanic(f); !funcDidPanic {
+		return Fail(t, fmt.Sprintf("func %#v should panic\n\r\tPanic value:\t%v", f, panicValue), msgAndArgs...)
+	}
+
+	return true
+}
+
+// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
+//
+//   assert.NotPanics(t, func(){
+//     RemainCalm()
+//   }, "Calling RemainCalm() should NOT panic")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
+
+	if funcDidPanic, panicValue := didPanic(f); funcDidPanic {
+		return Fail(t, fmt.Sprintf("func %#v should not panic\n\r\tPanic value:\t%v", f, panicValue), msgAndArgs...)
+	}
+
+	return true
+}
+
+// WithinDuration asserts that the two times are within duration delta of each other.
+//
+//   assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second, "The difference should not be more than 10s")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
+
+	dt := expected.Sub(actual)
+	if dt < -delta || dt > delta {
+		return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
+	}
+
+	return true
+}
+
+func toFloat(x interface{}) (float64, bool) {
+	var xf float64
+	xok := true
+
+	switch xn := x.(type) {
+	case uint8:
+		xf = float64(xn)
+	case uint16:
+		xf = float64(xn)
+	case uint32:
+		xf = float64(xn)
+	case uint64:
+		xf = float64(xn)
+	case int:
+		xf = float64(xn)
+	case int8:
+		xf = float64(xn)
+	case int16:
+		xf = float64(xn)
+	case int32:
+		xf = float64(xn)
+	case int64:
+		xf = float64(xn)
+	case float32:
+		xf = float64(xn)
+	case float64:
+		xf = float64(xn)
+	default:
+		xok = false
+	}
+
+	return xf, xok
+}
+
+// InDelta asserts that the two numerals are within delta of each other.
+//
+// 	 assert.InDelta(t, math.Pi, (22 / 7.0), 0.01)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func InDelta(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+
+	af, aok := toFloat(expected)
+	bf, bok := toFloat(actual)
+
+	if !aok || !bok {
+		return Fail(t, fmt.Sprintf("Parameters must be numerical"), msgAndArgs...)
+	}
+
+	if math.IsNaN(af) {
+		return Fail(t, fmt.Sprintf("Actual must not be NaN"), msgAndArgs...)
+	}
+
+	if math.IsNaN(bf) {
+		return Fail(t, fmt.Sprintf("Expected %v with delta %v, but was NaN", expected, delta), msgAndArgs...)
+	}
+
+	dt := af - bf
+	if dt < -delta || dt > delta {
+		return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
+	}
+
+	return true
+}
+
+// InDeltaSlice is the same as InDelta, except it compares two slices.
+func InDeltaSlice(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
+	if expected == nil || actual == nil ||
+		reflect.TypeOf(actual).Kind() != reflect.Slice ||
+		reflect.TypeOf(expected).Kind() != reflect.Slice {
+		return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
+	}
+
+	actualSlice := reflect.ValueOf(actual)
+	expectedSlice := reflect.ValueOf(expected)
+
+	for i := 0; i < actualSlice.Len(); i++ {
+		result := InDelta(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), delta)
+		if !result {
+			return result
+		}
+	}
+
+	return true
+}
+
+func calcRelativeError(expected, actual interface{}) (float64, error) {
+	af, aok := toFloat(expected)
+	if !aok {
+		return 0, fmt.Errorf("expected value %q cannot be converted to float", expected)
+	}
+	if af == 0 {
+		return 0, fmt.Errorf("expected value must have a value other than zero to calculate the relative error")
+	}
+	bf, bok := toFloat(actual)
+	if !bok {
+		return 0, fmt.Errorf("expected value %q cannot be converted to float", actual)
+	}
+
+	return math.Abs(af-bf) / math.Abs(af), nil
+}
+
+// InEpsilon asserts that expected and actual have a relative error less than epsilon
+//
+// Returns whether the assertion was successful (true) or not (false).
+func InEpsilon(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+	actualEpsilon, err := calcRelativeError(expected, actual)
+	if err != nil {
+		return Fail(t, err.Error(), msgAndArgs...)
+	}
+	if actualEpsilon > epsilon {
+		return Fail(t, fmt.Sprintf("Relative error is too high: %#v (expected)\n"+
+			"        < %#v (actual)", actualEpsilon, epsilon), msgAndArgs...)
+	}
+
+	return true
+}
+
+// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
+func InEpsilonSlice(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
+	if expected == nil || actual == nil ||
+		reflect.TypeOf(actual).Kind() != reflect.Slice ||
+		reflect.TypeOf(expected).Kind() != reflect.Slice {
+		return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
+	}
+
+	actualSlice := reflect.ValueOf(actual)
+	expectedSlice := reflect.ValueOf(expected)
+
+	for i := 0; i < actualSlice.Len(); i++ {
+		result := InEpsilon(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), epsilon)
+		if !result {
+			return result
+		}
+	}
+
+	return true
+}
+
+/*
+	Errors
+*/
+
+// NoError asserts that a function returned no error (i.e. `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.NoError(t, err) {
+//	   assert.Equal(t, actualObj, expectedObj)
+//   }
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool {
+	if isNil(err) {
+		return true
+	}
+
+	return Fail(t, fmt.Sprintf("Received unexpected error %q", err), msgAndArgs...)
+}
+
+// Error asserts that a function returned an error (i.e. not `nil`).
+//
+//   actualObj, err := SomeFunction()
+//   if assert.Error(t, err, "An error was expected") {
+//	   assert.Equal(t, err, expectedError)
+//   }
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Error(t TestingT, err error, msgAndArgs ...interface{}) bool {
+
+	message := messageFromMsgAndArgs(msgAndArgs...)
+	return NotNil(t, err, "An error is expected but got nil. %s", message)
+
+}
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+//   actualObj, err := SomeFunction()
+//   if assert.Error(t, err, "An error was expected") {
+//	   assert.Equal(t, err, expectedError)
+//   }
+//
+// Returns whether the assertion was successful (true) or not (false).
+func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool {
+
+	message := messageFromMsgAndArgs(msgAndArgs...)
+	if !NotNil(t, theError, "An error is expected but got nil. %s", message) {
+		return false
+	}
+	s := "An error with value \"%s\" is expected but got \"%s\". %s"
+	return Equal(t, errString, theError.Error(),
+		s, errString, theError.Error(), message)
+}
+
+// matchRegexp return true if a specified regexp matches a string.
+func matchRegexp(rx interface{}, str interface{}) bool {
+
+	var r *regexp.Regexp
+	if rr, ok := rx.(*regexp.Regexp); ok {
+		r = rr
+	} else {
+		r = regexp.MustCompile(fmt.Sprint(rx))
+	}
+
+	return (r.FindStringIndex(fmt.Sprint(str)) != nil)
+
+}
+
+// Regexp asserts that a specified regexp matches a string.
+//
+//  assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
+//  assert.Regexp(t, "start...$", "it's not starting")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+
+	match := matchRegexp(rx, str)
+
+	if !match {
+		Fail(t, fmt.Sprintf("Expect \"%v\" to match \"%v\"", str, rx), msgAndArgs...)
+	}
+
+	return match
+}
+
+// NotRegexp asserts that a specified regexp does not match a string.
+//
+//  assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
+//  assert.NotRegexp(t, "^start", "it's not starting")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
+	match := matchRegexp(rx, str)
+
+	if match {
+		Fail(t, fmt.Sprintf("Expect \"%v\" to NOT match \"%v\"", str, rx), msgAndArgs...)
+	}
+
+	return !match
+
+}
+
+// Zero asserts that i is the zero value for its type and returns the truth.
+func Zero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
+	if i != nil && !reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
+		return Fail(t, fmt.Sprintf("Should be zero, but was %v", i), msgAndArgs...)
+	}
+	return true
+}
+
+// NotZero asserts that i is not the zero value for its type and returns the truth.
+func NotZero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
+	if i == nil || reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
+		return Fail(t, fmt.Sprintf("Should not be zero, but was %v", i), msgAndArgs...)
+	}
+	return true
+}
+
+// JSONEq asserts that two JSON strings are equivalent.
+//
+//  assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool {
+	var expectedJSONAsInterface, actualJSONAsInterface interface{}
+
+	if err := json.Unmarshal([]byte(expected), &expectedJSONAsInterface); err != nil {
+		return Fail(t, fmt.Sprintf("Expected value ('%s') is not valid json.\nJSON parsing error: '%s'", expected, err.Error()), msgAndArgs...)
+	}
+
+	if err := json.Unmarshal([]byte(actual), &actualJSONAsInterface); err != nil {
+		return Fail(t, fmt.Sprintf("Input ('%s') needs to be valid json.\nJSON parsing error: '%s'", actual, err.Error()), msgAndArgs...)
+	}
+
+	return Equal(t, expectedJSONAsInterface, actualJSONAsInterface, msgAndArgs...)
+}
+
+func typeAndKind(v interface{}) (reflect.Type, reflect.Kind) {
+	t := reflect.TypeOf(v)
+	k := t.Kind()
+
+	if k == reflect.Ptr {
+		t = t.Elem()
+		k = t.Kind()
+	}
+	return t, k
+}
+
+// diff returns a diff of both values as long as both are of the same type and
+// are a struct, map, slice or array. Otherwise it returns an empty string.
+func diff(expected interface{}, actual interface{}) string {
+	if expected == nil || actual == nil {
+		return ""
+	}
+
+	et, ek := typeAndKind(expected)
+	at, _ := typeAndKind(actual)
+
+	if et != at {
+		return ""
+	}
+
+	if ek != reflect.Struct && ek != reflect.Map && ek != reflect.Slice && ek != reflect.Array {
+		return ""
+	}
+
+	spew.Config.SortKeys = true
+	e := spew.Sdump(expected)
+	a := spew.Sdump(actual)
+
+	diff, _ := difflib.GetUnifiedDiffString(difflib.UnifiedDiff{
+		A:        difflib.SplitLines(e),
+		B:        difflib.SplitLines(a),
+		FromFile: "Expected",
+		FromDate: "",
+		ToFile:   "Actual",
+		ToDate:   "",
+		Context:  1,
+	})
+
+	return "\n\nDiff:\n" + diff
+}
diff --git a/vendor/github.com/stretchr/testify/assert/doc.go b/vendor/github.com/stretchr/testify/assert/doc.go
new file mode 100644
index 0000000..c9dccc4
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/doc.go
@@ -0,0 +1,45 @@
+// Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.
+//
+// Example Usage
+//
+// The following is a complete example using assert in a standard test function:
+//    import (
+//      "testing"
+//      "github.com/stretchr/testify/assert"
+//    )
+//
+//    func TestSomething(t *testing.T) {
+//
+//      var a string = "Hello"
+//      var b string = "Hello"
+//
+//      assert.Equal(t, a, b, "The two words should be the same.")
+//
+//    }
+//
+// if you assert many times, use the format below:
+//
+//    import (
+//      "testing"
+//      "github.com/stretchr/testify/assert"
+//    )
+//
+//    func TestSomething(t *testing.T) {
+//      assert := assert.New(t)
+//
+//      var a string = "Hello"
+//      var b string = "Hello"
+//
+//      assert.Equal(a, b, "The two words should be the same.")
+//    }
+//
+// Assertions
+//
+// Assertions allow you to easily write test code, and are global funcs in the `assert` package.
+// All assertion functions take, as the first argument, the `*testing.T` object provided by the
+// testing framework. This allows the assertion funcs to write the failings and other details to
+// the correct place.
+//
+// Every assertion function also takes an optional string message as the final argument,
+// allowing custom error messages to be appended to the message the assertion method outputs.
+package assert
diff --git a/vendor/github.com/stretchr/testify/assert/errors.go b/vendor/github.com/stretchr/testify/assert/errors.go
new file mode 100644
index 0000000..ac9dc9d
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/errors.go
@@ -0,0 +1,10 @@
+package assert
+
+import (
+	"errors"
+)
+
+// AnError is an error instance useful for testing.  If the code does not care
+// about error specifics, and only needs to return the error for example, this
+// error should be used to make the test code more readable.
+var AnError = errors.New("assert.AnError general error for testing")
diff --git a/vendor/github.com/stretchr/testify/assert/forward_assertions.go b/vendor/github.com/stretchr/testify/assert/forward_assertions.go
new file mode 100644
index 0000000..b867e95
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/forward_assertions.go
@@ -0,0 +1,16 @@
+package assert
+
+// Assertions provides assertion methods around the
+// TestingT interface.
+type Assertions struct {
+	t TestingT
+}
+
+// New makes a new Assertions object for the specified TestingT.
+func New(t TestingT) *Assertions {
+	return &Assertions{
+		t: t,
+	}
+}
+
+//go:generate go run ../_codegen/main.go -output-package=assert -template=assertion_forward.go.tmpl
diff --git a/vendor/github.com/stretchr/testify/assert/http_assertions.go b/vendor/github.com/stretchr/testify/assert/http_assertions.go
new file mode 100644
index 0000000..e1b9442
--- /dev/null
+++ b/vendor/github.com/stretchr/testify/assert/http_assertions.go
@@ -0,0 +1,106 @@
+package assert
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+)
+
+// httpCode is a helper that returns HTTP code of the response. It returns -1
+// if building a new request fails.
+func httpCode(handler http.HandlerFunc, method, url string, values url.Values) int {
+	w := httptest.NewRecorder()
+	req, err := http.NewRequest(method, url+"?"+values.Encode(), nil)
+	if err != nil {
+		return -1
+	}
+	handler(w, req)
+	return w.Code
+}
+
+// HTTPSuccess asserts that a specified handler returns a success status code.
+//
+//  assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values) bool {
+	code := httpCode(handler, method, url, values)
+	if code == -1 {
+		return false
+	}
+	return code >= http.StatusOK && code <= http.StatusPartialContent
+}
+
+// HTTPRedirect asserts that a specified handler returns a redirect status code.
+//
+//  assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, values url.Values) bool {
+	code := httpCode(handler, method, url, values)
+	if code == -1 {
+		return false
+	}
+	return code >= http.StatusMultipleChoices && code <= http.StatusTemporaryRedirect
+}
+
+// HTTPError asserts that a specified handler returns an error status code.
+//
+//  assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values url.Values) bool {
+	code := httpCode(handler, method, url, values)
+	if code == -1 {
+		return false
+	}
+	return code >= http.StatusBadRequest
+}
+
+// HTTPBody is a helper that returns HTTP body of the response. It returns
+// empty string if building a new request fails.
+func HTTPBody(handler http.HandlerFunc, method, url string, values url.Values) string {
+	w := httptest.NewRecorder()
+	req, err := http.NewRequest(method, url+"?"+values.Encode(), nil)
+	if err != nil {
+		return ""
+	}
+	handler(w, req)
+	return w.Body.String()
+}
+
+// HTTPBodyContains asserts that a specified handler returns a
+// body that contains a string.
+//
+//  assert.HTTPBodyContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}) bool {
+	body := HTTPBody(handler, method, url, values)
+
+	contains := strings.Contains(body, fmt.Sprint(str))
+	if !contains {
+		Fail(t, fmt.Sprintf("Expected response body for \"%s\" to contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body))
+	}
+
+	return contains
+}
+
+// HTTPBodyNotContains asserts that a specified handler returns a
+// body that does not contain a string.
+//
+//  assert.HTTPBodyNotContains(t, myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}) bool {
+	body := HTTPBody(handler, method, url, values)
+
+	contains := strings.Contains(body, fmt.Sprint(str))
+	if contains {
+		Fail(t, "Expected response body for %s to NOT contain \"%s\" but found \"%s\"", url+"?"+values.Encode(), str, body)
+	}
+
+	return !contains
+}