validation -- handle invalid code received
attempts can be successful ... or not
factories_spec should just skip base_ factories
Gringotts::Code generates and logs the actual code expected
Merge branch 'code' of https://github.com/conroywhitney/gringotts into code

Conflicts:
	app/controllers/gringotts/verification_controller.rb
	app/models/gringotts/attempt_validator.rb
	app/models/gringotts/vault.rb