Added temporary splash screens and icons

- Added temporary splash screens and icons
- Reset build number`
Added "cocos2d.h" import statement to pre-compiled header
Updated App Delegate header to be ARC compliant
Added a main menu screen that displays an icon

Added a MainMenuScene that has a MenuOptionsLayer that just displays a
temporary icon for debugging purposes
Documented code

I forgot!
Added a play button to the menu

The playButton calls playGame which NSLogs for debuggng
Added a gameplay scene that displays an icon

Made the play button transition to a gameplay scene
The gameplay scene displays a temporary icon image
Added definitions to pre-compiled header for window size and center point

WINDOW_SIZE gets the size of the window (CGSize)
CENTER_POINT gets the point in the center of the screen (CGPoint)
Updated gitignore to ignore .xcuserstate file
Cleared out the gameplay scene in preparation for features

Removed debugging code
Added a player

Player class added
Player sprite gets drawn in GameplayLayer
Deleted GameplayScene (unneeded)
Added orb and player orbits orb

The Player orbits the Orb at 0.1 degrees per update
Player's rotation changes as it orbits

The Player's rotation is now correctly set
Changed the intro layer to the GameplayLayer for debugging purposes
Added a radians per frame variable to Player (25)
Merge branch 'feature-player_revolving_around_orb' into development
Changed player sprite to circle

Edited allowed orientations for debugging
Game broken, reverting back
Merge branch 'feature-player_switching_between_distinct_orbits' into development
Revert "Game broken, reverting back"

This reverts commit c4dc3c610ae05027efcb0d7a6c258324544ed66a.
Took out code that deals with currentYDirection