Completion of a small social network application for iPhone, using Three20 and RestKit frameworks(repost)

I have started developing a small social network application for iPhone, using Three20 and RestKit frameworks. I need a developer to continue working on this app to complete the login/registration system using OAuth 2 and implement various features. The winning bidder will have access to the git repository with the source code of the app and a wireframe of the interface I need to be developed. Please only bid if you have an extended knowledge of Objective-C development for iOS with Three20 and RestKit frameworks. In your bid, please specify your hourly rate and your portfolio of the iPhone apps you developed to let me review your skills.