Return instance in chain()
Return instance in chain()

update from the original Tween github repository

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