Gopkg.toml,github: update rest dependency

This removes a lot of the imports that the rest package previously
depended on that we actually don't need.

Fixes #110.

Gopkg.toml

@@ -9,7 +9,7 @@
 
 [[constraint]]
   name = "github.com/kevinburke/rest"
-  version = "2.2.0"
+  version = "2.5.0"
 
 [[constraint]]
   name = "github.com/tomnomnom/linkheader"

github/github.go

@@ -11,7 +11,7 @@ import (
 	"os"
 	"reflect"
 
-	"github.com/kevinburke/rest"
+	"github.com/kevinburke/rest/restclient"
 	"github.com/tomnomnom/linkheader"
 )
 
@@ -42,14 +42,14 @@ func DoAuthRequest(method, url, mime, token string, headers map[string]string, b
 // API, such as authorization tokens. Methods called on Client will supply
 // these options when calling the API.
 type Client struct {
-	client *rest.Client
+	client *restclient.Client
 }
 
 // NewClient creates a new Client for use with the Github API.
-func NewClient(username, token string, client *rest.Client) Client {
+func NewClient(username, token string, client *restclient.Client) Client {
 	c := Client{}
 	if client == nil {
-		c.client = rest.NewClient(username, token, DefaultBaseURL)
+		c.client = restclient.New(username, token, DefaultBaseURL)
 	} else {
 		c.client = client
 	}
@@ -153,7 +153,7 @@ var defaultHttpClient *http.Client
 
 func init() {
 	defaultHttpClient = &http.Client{
-		Transport: rest.DefaultTransport,
+		Transport: restclient.DefaultTransport,
 	}
 }
 
@@ -176,7 +176,7 @@ func (c Client) Do(r *http.Request) (*http.Response, error) {
 		if c.client.ErrorParser != nil {
 			return nil, c.client.ErrorParser(res)
 		}
-		return nil, rest.DefaultErrorParser(res)
+		return nil, restclient.DefaultErrorParser(res)
 	}
 	return res, nil
 }