Add rspec and spring to automate running tests
Remove minitest files
Generate user spec
Add omniauth initializer, using developer strategy for now
Switch to using omniauth-twitter
Add sessions controller to handle oauth callbacks
Add a create method to log in a user after twitter auth
Add stubs to verify that Oauth is working
Add Authorizations model, simplify User models.
Add validations to models
Add logic in Session#create method to create a new user, or get existing from oauth