Fixed iAd not appearing in the main view controller.
Replay and share buttons are now animated correctly on game over/ game start.
- Implemented game over screen button animations.
- Fixed iAd show/hide method to move up/down instead of hiding and disappearing.
minor fixes
Removed file that shouldn't be tracked.
Removed file that was not supposed to be tracked.
Merge branch '20140315_GameEndedScreenAnimations'