Active SMS Generator

Description:
    The SMS generator creates stubs for a new SMS model.
    
    The generator takes an SMS model name and a list of SMS methods as
    arguments.  The model name may be given in CamelCase or under_score.
    
    The generator creates an SMS model class in app/models and a test suite
    with fixtures in test/unit.
    
Example:
    ./script/generate sms Notifier signup forgot_password
    
    This will create a Nofier SMS class:
        Model:     app/models/notifier.rb
        Test:      test/unit/notifier_test.rb
        Fixtures:  test/fixtures/notifier/signup
                   test/fixtures/notifier/forgot_password
