game balancing
Merge branch 'run-game' of https://github.com/growingdever/threejs-small-framework into run-game

# By Namyun Kim
# Via Namyun Kim (1) and growingdever (1)
* 'run-game' of https://github.com/growingdever/threejs-small-framework:
  Force refresh when user enter full screen mode