Create camera
Use camera
Fix beam direction
Merge branch 'master' into feature/camera

Conflicts:
	public/js/src/entity/player.js
	public/js/src/scene/beamQuest.js

いったん、大まかに、remoteを生きで
Fix player position (it is already absolute position)
Refactor
Merge pull request #25 from soltycabbage/feature/camera

カメラ実装