remove conversation/readme.md and restore doc.go

Author: vallerion

README.md

@@ -59,9 +59,6 @@ Amount: 9
 
 Please see the other examples for a complete overview of all the available API calls.
 
-## More examples
-* [Conversation API](./conversation/readme.md)
-
 Errors
 ------
 When something goes wrong, our APIs can return more than a single error. They are therefore returned by the client as "error responses" that contain a slice of errors.

conversation/doc.go

@@ -0,0 +1,7 @@
+// Package conversation provides an interface to the Conversations API. The
+// API's docs are located here:
+// https://developers.messagebird.com/docs/conversations. The api.go file
+// contains the structs returned by the API, and the other files provide the
+// functionality needed to send requests, as well as any structs required for
+// that - e.g. request data or pagination options.
+package conversation