added video link

Author: kaajo

README.md

@@ -3,10 +3,15 @@
 
 A C++/Qt clone of the popular 2048 game. 
 
-Game logic is written in C++, the GUI in Qt 5.2.1. The entire GUI is written in code, Qt Creator's UI designer was not used.
+Game logic is written in C++, the GUI in Qt 5.2.1. 
 
 The core is decoupled from the GUI using the observer pattern, so it is easy to pull the code, extract the core and then build a new GUI around it.
 
+Video
+--
+
+https://www.youtube.com/watch?v=Nle0iFpWwjE
+
 Screenshot
 --
 ![Alt text](http://i.imgur.com/0gJZqvI.png)