Improved movement control. Added bounding by pushing Cat with force if go out of bound.
Merge branch 'master' of github.com:haxpor/LD27

Conflicts:
	unityproj/Assets/Gameplay/Gameplay/CountDownTimer.cs
	unityproj/Assets/game_assets/GameplayManager.prefab

Changed to use CountDownTime.instance... in GameOverChecker in order to get the instance of CountDown time according changes made.