Added screenshot

Author: sofiangrh

README.md

@@ -13,8 +13,16 @@ This project only include two simple .py files:
 # Requirement
 
 1. Python 2.7
+2. Python-Pygame
 
-# Installation
+# How To Start Game
 
-To run this game, install the corresponding version of pygame.
-After that, double click the mainGame.py and you can play it.
+```bash
+$ python mainGame.py
+```
+
+#Screeshot
+
+![](http://s2.postimg.org/728c1wy4p/Screenshot_5.png)
+
+![](http://s30.postimg.org/fflxcv9ld/Screenshot_6.png)