Deleted examples, beginning to write in EC6.

Examples and Hydrabot will soon live in a separate repo which is better
suited to learning - this is so the main package isn't bloated.

lib/PMChannel.js

@@ -1,6 +1,8 @@
+"use strict";
+
 var User = require("./user.js").User;
 
-exports.PMChannel = function(user, id){
+exports.PMChannel = function (user, id) {
     this.user = new User(user);
     this.id = id;
-}
+};