[+] New message_create event that is fired on all message creations.

A new property "fromMe" has also been added to messages.

Close #8

src/structures/Message.js

@@ -23,6 +23,7 @@ class Message extends Base {
         this.author = data.author;
         this.isForwarded = data.isForwarded;
         this.broadcast = data.broadcast;
+        this.fromMe = data.id.fromMe;
 
         return super._patch(data);
     }