Adds the UUID for the App Store version of Xcode 5.1

It looks like the UUID for the App Store version of Xcode 5.1 is different from the beta. The new UUID was taken from the [Alcatraz patch](https://github.com/supermarin/Alcatraz/commit/0e60f424b13f2d46db4315b5926f487b8981fd62)