@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 build 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.