Created bare bones VBHUD

Re: issue #20

- Added MDProgressHUD library to Podfile, and VBHUD.h/.m files to be included from *prefix.ch
- Added basic set of functions for HUD to get us started.
Checkin methods

Closes #32
Closes #39

- Removes user source property
	it's handled by the manager.
- Adds test for checkin count
- Adds tests for fetching checked in users
Merge pull request #43 from azoff/22-core-vbhud

Created bare bones VBHUD
Merge pull request #44 from azoff/32-user-count

Checkin methods
Merge branch 'master' of github.com:azoff/verbatim into 13-feature-navigation-controller

Conflicts:
	verbatim.xcodeproj/project.pbxproj
Category in it's own file
Wire in caption controller and turn off status bar.