virtual controllers : start off with the right visibility set in params
Update Pool.as
Merge pull request #85 from tzenkner/master

RemoveBody instead of AddBody ;)
joystick visibility
joystick/button visibility

create graphics first, then setParams will set visibility on them if specified in the constructor's params,
then there should no longer be problems with the _visible proxy to graphic.visible
Merge remote-tracking branch 'upstream/master'