Updated the shim `bind` function with a more ES5 compliant one
Updated the shim `bind` function with a more ES5 compliant one

Fixed some "context" issue on older browser version not supported `bind`
@See https://github.com/city41/breakouts/issues/14

MarkoIvanetic/melonJS,melonjs/melonJS,MarkoIvanetic/melonJS,gopalindians/melonJS,TukekeSoft/melonJS,srbala/melonJS,rlugojr/melonJS,srbala/melonJS,gopalindians/melonJS,gopalindians/melonJS,srbala/melonJS,TukekeSoft/melonJS,Smoss/Enoru-eco,Smoss/Enoru-eco,melonjs/melonJS,rlugojr/melonJS,TukekeSoft/melonJS,rlugojr/melonJS