shared schemes
fixed setting properties to nil more than once in -viewDidUnload

Thanks to Marin Todorov from http://www.touch-code-magazine.com/
Convert both targets to ARC
Merge pull request #1 from vtourraine/objc-arc

ARC conversion
Updated README to explain ARC update and non_ARC branch
ARC lets us use a much simpler singleton.
Merge pull request #4 from drewish/master

Simplify the singleton.
Added a podspec file.

Note: the repo needs a tag of "1.0.0" in order for the podspec to work.
Updated the podspec
Merge pull request #8 from gnyrd/master

Podspec addition
Update the version in the podspec now that there is a tag in the repo.
Added a license type and homepage (no validates with pod spec lint)
Merge pull request #9 from gnyrd/master

Podspec now represents the tag in the repo.
Merge branch 'upstream'

Conflicts:
	PDKeychainBindingsController/PDKeychainBindingsController.m
Updates for XCode5
Xcode5 changes