[TIMOB-15741]Updating to the new iOS-sim for Xcode 5.1 support
[TIMOB-15741]wait till the child_process is complete before starting simulator.
[TIMOB-15741]handle Xcode switch properly, removing any dependencies on the binary.
[TIMOB-15741]Updating to the latest binary, with the cleaned up code.
[TIMOB-15741]Pulling in ios-sim with support for Xcode 5 and above
[TIMOB-15741]Updating binary, removing some deadcode
Merge pull request #5350 from srahim/timob-15741

[TIMOB-15741]iOS:Updating to the new iOS-sim for Xcode 5.1 support