Use mod vendor for vendored directory (backwards compatible)

vendor/github.com/42wim/go-gitter/.gitignore

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+.idea
+/test
+app.yaml

vendor/github.com/42wim/go-gitter/README.md

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+# gitter
+Gitter API in Go
+https://developer.gitter.im
+
+#### Install
+
+`go get github.com/sromku/go-gitter`
+
+- [Initialize](#initialize)
+- [Users](#users)
+- [Rooms](#rooms)
+- [Messages](#messages)
+- [Stream](#stream)
+- [Faye (Experimental)](#faye-experimental)
+- [Debug](#debug)
+- [App Engine](#app-engine)
+
+##### Initialize
+``` Go
+api := gitter.New("YOUR_ACCESS_TOKEN")
+```
+
+##### Users
+
+- Get current user
+
+	``` Go
+	user, err := api.GetUser()
+	```
+
+##### Rooms
+
+- Get all rooms
+	``` Go
+	rooms, err := api.GetRooms()
+	```
+
+- Get room by id
+	``` Go
+	room, err := api.GetRoom("roomID")
+	```
+
+- Get rooms of some user
+	``` Go
+	rooms, err := api.GetRooms("userID")
+	```
+
+- Join room
+	``` Go
+	room, err := api.JoinRoom("roomID", "userID")
+	```
+	
+- Leave room
+	``` Go
+	room, err := api.LeaveRoom("roomID", "userID")
+	```
+
+- Get room id
+	``` Go
+	id, err := api.GetRoomId("room/uri")
+	```
+
+- Search gitter rooms
+	``` Go
+	rooms, err := api.SearchRooms("search/string")
+	```
+##### Messages
+
+- Get messages of room
+	``` Go
+	messages, err := api.GetMessages("roomID", nil)
+	```
+
+- Get one message
+	``` Go
+	message, err := api.GetMessage("roomID", "messageID")
+	```
+
+- Send message
+	``` Go
+	err := api.SendMessage("roomID", "free chat text")
+	```
+
+##### Stream
+
+Create stream to the room and start listening to incoming messages
+
+``` Go
+stream := api.Stream(room.Id)
+go api.Listen(stream)
+
+for {
+    event := <-stream.Event
+    switch ev := event.Data.(type) {
+    case *gitter.MessageReceived:
+        fmt.Println(ev.Message.From.Username + ": " + ev.Message.Text)
+    case *gitter.GitterConnectionClosed:
+        // connection was closed
+    }
+}
+```
+
+Close stream connection
+
+``` Go
+stream.Close()
+```
+
+##### Faye (Experimental)
+
+``` Go
+faye := api.Faye(room.ID)
+go faye.Listen()
+
+for {
+    event := <-faye.Event
+    switch ev := event.Data.(type) {
+    case *gitter.MessageReceived:
+        fmt.Println(ev.Message.From.Username + ": " + ev.Message.Text)
+    case *gitter.GitterConnectionClosed: //this one is never called in Faye
+        // connection was closed
+    }
+}
+```
+
+##### Debug
+
+You can print the internal errors by enabling debug to true
+
+``` Go
+api.SetDebug(true, nil)
+```
+
+You can also define your own `io.Writer` in case you want to persist the logs somewhere.
+For example keeping the errors on file
+
+``` Go
+logFile, err := os.Create("gitter.log")
+api.SetDebug(true, logFile)
+```
+
+##### App Engine
+
+Initialize app engine client and continue as usual
+
+``` Go
+c := appengine.NewContext(r)
+client := urlfetch.Client(c)
+
+api := gitter.New("YOUR_ACCESS_TOKEN")
+api.SetClient(client)
+```
+
+[Documentation](https://godoc.org/github.com/sromku/go-gitter)