[gemspec] Update Xcodeproj to `~> 0.20.0`
Merge pull request #42 from venmo/xcodeproj

[gemspec] Update Xcodeproj to `~> 0.20.0`
[Release] v1.5.3
[README] Add DAZABTest to Projects that use Slather
Merge pull request #44 from dasmer/master

[README] Add DAZABTest to Projects that use Slather
[CocoaPods] Update to CocoaPods 0.36 plugin API

Closes #29