[#315] added a keyboard shortcut in the platformer example to toggle fullscreen on/off
[#315] added a keyboard shortcut in the platformer example to toggle fullscreen on/off

makes it easy to test support on all browsers :)

TukekeSoft/melonJS,TukekeSoft/melonJS,rlugojr/melonJS,gopalindians/melonJS,rlugojr/melonJS,rlugojr/melonJS,MarkoIvanetic/melonJS,gopalindians/melonJS,srbala/melonJS,melonjs/melonJS,melonjs/melonJS,srbala/melonJS,TukekeSoft/melonJS,gopalindians/melonJS,srbala/melonJS,MarkoIvanetic/melonJS