Draft for libGDX Pay API.
Purchase object improved to accept both an integer or String in the constructor for the item identifier.
Merge branch 'master' of https://github.com/noblemaster/libgdx into iap
added gdx-pay to build
Merge branch 'master' of https://github.com/libgdx/libgdx
Merge branch 'iap' of https://github.com/libgdx/libgdx
Pay API:
 - removed PurchaseObserver - there is now only 1 single listener: PurchaseListener
 - itentifier changed to String (from int).
Merge branch 'iap' of https://github.com/libgdx/libgdx
Added payment processor stubs for Google Wallet/GWT and Stripe/Desktop.
Added ObjectAL hack for fixing audio problems that happen sometimes.
Also use Foundation.NSLog for every Gdx log message.
Removed log spam of iOS preferences (no backend has log messages for this).
Merge pull request #2008 from BlueRiverInteractive/ios-update

Fix for iOS audio and logging.
updated changes
Merge branch 'iap' of https://github.com/libgdx/libgdx
removed iap extension from master, what was i thinking...2
updated to release version 1.2.0
Allow centering on either axis fixes #2001
Merge pull request #2014 from Tom-Ski/master

Allow centering on either axis fixes #2001
removed FireTV mappings, incomplete and appearently incorrect
Merge branch 'master' of https://github.com/libgdx/libgdx
fixed Ant build