Added testing framework.
Added unit tests for Mandrill API methods used by the module.
Updated tests.
Additional tests for sending messages.
Cleaned up unused test classes.
Coding standards.
Additional test cases for error handling.
Fixed email address formatting in tests. #5
entity_token module never used. Removed from test requirements.
Cleaning up test vars after test completion.
Added Mandrill hooks test cases. #6
Cleaned up test variable.
Added test mode variable, allows for failure testing without logging errors.
mandrill_test_mode, not mailchimp_test_mode.
Merge pull request #4 from thinkshout/7.x-2.x-tests

7.x 2.x tests