Can't change carrier on iOS 4.2

[brianpartridge]

It looks like iOS 4.2 removed support for the SBFakeCarrier key in the plist. I don't think there is much of anything that we can do about this, but it would be great if there was a note in the README about the supported versions of the iPhone Simulator.

This way people looking to demo an app supporting iOS 4.2+ wont be confused when the carrier string cannot be changed. I haven't checked, but there may be other keys that are also no longer supported.