Changes from downstream appcelerator/ios-sim to support the new PrivateFrameworks for iPhoneSimulator
Fixed ""Failed to find class DTiPhoneSimulatorSystemRoot at runtime" error
Fixed ""The application that opened iOS Simulator failed to send all of the required information" error
Merge pull request #73 from phonegap/issue-72

Fixes #72 - Xcode 5.1 use of new PrivateFrameworks for iPhoneSimulatorClient
Updated README and npm package.json
Correct pref name for retina iPad

The correct value in the prefs to start a retina iPad is "iPad Retina" (not "iPad (Retina)")
Merge pull request #75 from coronalabs/master

Correct pref name for retina iPad
Added 64-bit device definitions