* Add GHUnit pod spec for iOS and OSX
* Deprecate warning for GHUnitIOS and GHUnitOSX
* Fix deployment target
* Fix missing iOS Framework
* Fixes https://github.com/CocoaPods/CocoaPods/issues/1539
Change from post_install --> prepare_command
Merge pull request #5165 from x2on/gh-unit-0.5.8

[Update] GHUnit 0.5.8