Added SimpleAuth (which required adding ReactiveCocoa, CMDQueryStringSerialization, and cocoa-oauth).  Added manual test to login to Facebook and LinkedIn.  This test verifies that the UIWebview is displayed, and on the user entering credentials, the right things happen.  This is a precursor to integration in the main codebase.
More on the GTMO provider.
Now we have dropbox, twitter, linkedIn, Facebook, and gmail OAuth working using a test driver.  Now to boldly leap into integrating them into the app.