Add final console output

lib/BansheeBot.js

@@ -1,7 +1,7 @@
 /**
  * @author Timur Kuzhagaliyev <tim.kuzh@gmail.com>
  * @copyright 2017
- * @license GPL-3.0
+ * @license MIT
  */
 
 const Discord = require("discord.js");
@@ -43,6 +43,7 @@ class BansheeBot {
                     this.musicChannel.send('Now playing: ' + track.name);
                 });
             })
+            .then(() => console.log('Connected!'))
 
             .catch(error => console.error(error));
     }