add screenshots

README.md

@@ -6,13 +6,15 @@ This is my personal experiment extending the Asteroids game example from Richard
 
 The Asteroids example is extended to support 3 rendering modes in one game:
 
-* Flash's Display List (original)
+* Flash Display List
+![Flash Display List](http://abiyasa.com/lab/away3d/ashteroids/mode_native.png "Flash Display List")
 * Starling framework
-* Away3D
+![Starling mode](http://abiyasa.com/lab/away3d/ashteroids/mode_starling.png "Starling framework")
+* Away3D 4
+![Away3D 4 mode](http://abiyasa.com/lab/away3d/ashteroids/mode_away3d.png "Away3D 4")
 
 User will be able to select rendering mode before the game starts.
-
-[TODO attach screen shots]
+![Mode selection](http://abiyasa.com/lab/away3d/ashteroids/main_menu.png "Mode selection")
 
 ## Demo & Source
 For online demo: http://abiyasa.com/lab/away3d/ashteroids/