iOS Fixes ofMainLoop and removed from register/unregister image

- ofMainLoop.h:40:54: A space is required between consecutive right
angle brackets (Xcode)
- Removed from pre-processor the ```TARGET_OF_IOS``` for
register/unregister images. iOS Doesn’t have the same issue as Android
has with that.
OS X Window Settings changes fixes

- Missing include
- Undefined types
iOS Window Changes
Fix for iOS Native issue
Merge pull request #25 from danoli3/refactor-multiwindow

Refactor multi window with iOS working