added the AuthyLockable module, updated the DeviseAuthyController to support account locking per current devise configuration
added a few gitignore statements
fix for failed_attempts counting
implemented test coverage for authy_lockable
raise an error if the devise lockable module isnt used, updated testing
addl test for authy_lockable
added authy_lockable feature testing
removed extraneous requests for new_user_session_path in authy_authenticatable feature tests
lock the account when verify install fails too many times for authy_lockable extension.
Configured user model with authy_lockable on authy-devise-demo
Fix some tests
Merge remote-tracking branch 'origin/master' into enable-account-locking
Update user model of authy-devise-demo
Update the BD for tests

- Added the fields: failed_attempts, unlock_token, locked_at to User
  table
Merge remote-tracking branch master into enable-account-locking
Update Authy gem to v2.4.0
Merge pull request #17

Enable Account Locking