Removes previous xcrun implementation and replaces with simpler version using ios-sim for app install and launch
Removes previous xcrun implementation and replaces with simpler version using ios-sim for app install and launch

paulstringer/OCSlimProject,ncoelle/Slim-iOS-TestRunner,paulstringer/OCSlimProject,paulstringer/OCSlimProject,ncoelle/Slim-iOS-TestRunner,ncoelle/Slim-iOS-TestRunner,ncoelle/Slim-iOS-TestRunner,paulstringer/OCSlimProject