added doc comment
added doc comment

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