@ashfurrow => Registration Views and PIN RAC work

This supersedes https://github.com/artsy/eidolon/pull/90 ( and basically adds the snapshots ) because I didn't want to make Storyboard changes without building on top of @1aurabrown's work.

I've added a view that represents the current state of the registration  flow in the app, and looked up a lot of the code for the PIN VC. I've commented out the manifesto checks for now, as I'm spending a lot of time offline and often don't have the most up to date `Pods` checkout.
To be honest, I'm surprised that we have to instantiate a window at all. As long as it works. I'll make a note in #90.