Version 0.7.0 Release - Drop Testflightapp.com deployment

• Drops support for automated deploys to TestFlight, since testflightapp.com no longer exists. We recommend that you use Thrust in conjunction with another gem that supports automated deploys, e.g. shenzhen or deliver.
• Adds rake tasks for building an .ipa file for deployment. The rake tasks use the existing TestFlight deployment configurations to build the .ipa's. The keys that are still used are:
  • target
  • build_configuration
  • provisioning_search_query
  • versioning_method
  • tag