updated requires to match newer versions of gems
provided new Message Bird URL and changed response test
Merge pull request #1 from roqua/im-mollie-to-messagebird

Mollie to MessageBird hosts
Add Gemfile for convenience.
Update Gemfile.lock.
Bump version to 1.1.0 and update Copyright.
Fix the API endpoint.
Bump version to 1.1.1.