Upgraded project to be compatible with the iOS 7 SDK.

Deferred creation of selectors to runtime and changed integer types to avoid compiler warnings.

Specs and focused specs run, but there are problems with the dynamic libraries and runtime services that are still causing problems with the iOSSpecs target.

iOSSpecs Target

- iOS 5.1 - all tests pass when run from within XCode
- iOS 6.1 - all tests pass when run from within XCode
- iOS 7.0 - 6 tests fail when run from within XCode

I have gotten mixed results when running the rake tasks, so for right now, I'm just focusing on getting everything working from within XCode.