++Mantle to hide-libextobjc
++RAC to libextobjc-subtree
Remove xcworkspace
Fix up RAC and xcconfig references in the project file
Stop linking Mantle and RAC into the iOS target

Require consumers to do it at the application level instead.
Remove AFNetworking, Mantle, RAC imports from pch
Update Getting Started instructions
++MTL and ++RAC
++MTL ++RAC
++MTL ++RAC
++RAC
++RAC
Stub a dependencies project
Move AFNetworking to dependencies project
Remove Xcode junk files
Move ISO8601DateFormatter to the dependencies project
Update README
Merge pull request #77 from octokit/dependency-revamp

Dependency revamp