use omniauth/oauth-fb and delete user model
generate user model for omniauth-facebook use
add function to user.rb to interact with auth
migrate db
remove messed up db migration
add migration file for user
create blank omniauth initializer
stub code for omniauth initializer (no app id yet)
copy facebook js script from tutorial
Merge branch 'addsignup'

Conflicts:
	Gemfile.lock