Bug fixes

This update from Apple will improve the functionality of this app. No new features are included.

Support for iOS 11

* Added high resolution icons for iPhone 6 devices
* iOS8 compatibility

- Optimized for iPhone 5 / iPod 5 screens.
- Added G+ button
- Updated logo
- Minor bug fixes

* Survival mode weapon loadout fixed for third world
* Effects no longer locked to framerate
* Updated Clapfoot logo
* Bug fixes and other misc changes

* New world with 40 levels and new graphics
* Game Center support with Achievements
* New weapon: The Armor Piercing Cannon
* UI improvements
* Bug fixes