Moved GHViewTestCase.[hm] from Classes to Classes-iOS
added stderr redirect environment variable.
Updated guide to work with iOS 6.1 and Xcode 4.6.1

Added link to downloads.
Added suggestion to turn on Automatic reference counting.
Added suggestion to link QuartzCore on error.
* Bumping version to 0.5.7
* Add Cocoapod spec files
* Change iOS Example to support iOS 7 and Retina devices
* Update framework in iOS Example to 0.5.7
* Add support for armv64 in iOS Example
* Update framework in MacOSX Example to 0.5.7
Change URL to gh-unit
Change URL to gh-unit
Merge branch 'move-ghviewtestcase' of https://github.com/mflint/gh-unit
Fixes https://github.com/gabriel/gh-unit/pull/87
Merge branch 'master' of https://github.com/gardner/gh-unit
Fixes https://github.com/gabriel/gh-unit/pull/119
Merge branch 'master' of https://github.com/JARinteractive/gh-unit
Fixes https://github.com/gabriel/gh-unit/pull/113