Update spec
A bunch of internal canges as well as API changes.

 Authentication changed to
    +(void)SH_authenticateWithLoginViewControllerBlock:SHGameViewControllerBlock)theLoginViewControllerBlock
    didLoginBlock:(SHGameCompletionBlock)theLoginBlock
    didLogoutBlock:(SHGameCompletionBlock)theLogoutBlock
    withErrorBlock:(SHGameErrorBlock)theErrorBlock;

Caching and requests
    will write cache
      GKTurnedBasedMatch SH_requestMatchesAndFriendsWithBlock:
      GKTurnedBasedMatch SH_requestPlayersWithBlock:
      GKLocalPlayer      SH_requestFriendsWithBlock:

    write/read cache
      GKTurnedBasedMatch  SH_requestMatchesWithBlock:
      GKTurnedBasedMatch  handleTurnEventForMatch:
      GKaTurnedBasedMatch handleMatchEnded:
Update ColorArt v0.1.0
Merge pull request #2001 from seivan/feature/SHGameCenter

0.3.0 - added caching to all requests. Changed authentication API.
Merge pull request #2000 from rivera-ernesto/master

Add NBUCore 1.8.1
Added OBTabBarController v1.1
Added HCViews
AMSlideOutController 1.3
Merge branch 'AMSlideOutController'
Added SJOPaperboy
Merge pull request #2005 from blork/master

Added SJOPaperboy
Merge pull request #2003 from andreamazz/master

AMSlideOutController 1.3
Updated Summary
Merge pull request #2004 from hypercrypt/master

Added HCViews
Merge pull request #2002 from oriolblanc/master

Add OBTabBarController 1.1
Add PonyDebugger version 0.3.0.
Merge pull request #2006 from wlue/master

PonyDebugger v0.3.0
Bumping AHEasing to version 1.1

On Jan 13, 2013, AHEasing was bumped. This is just pulling the podspec
from that repository into here. I am not the author of AHEasing, just
noticed it was out of date.
Adding podspec for AmazonS3Client 0.2.0
uncomment preserve paths for showkit