Use xcrun instead of magic strings
Use xcrun at end-user' Rakefile
Use an Xcode text placeholder for the SUT variable name in the Cedar Spec file template
Kill the simulator after completing rake tasks that use it.

- This ensures that no environment state (e.g. Reporter Class) sticks around after rake is done
Setup the Podspec to explicitly link against libc++.a
Merge pull request #228 from pivotal-brian-croom/add-libc++-to-podspec

Setup the Podspec to explicitly link against libc++
Merge pull request #224 from pivotal-brian-croom/close-sim-after-rake

Kill the simulator after completing rake tasks that use it.
Merge pull request #223 from pivotal-brian-croom/placeholder-text-in-spec-file-template

Use an Xcode text placeholder for the SUT variable name in the Cedar Spec file template
Merge pull request #220 from AlexDenisov/xcrun

Use xcrun instead of magic strings