Description:
    Generates a new ActiveCopy model for use in this project. Specify
    attributes that the model will use in the arguments following the
    first.

Example:
    rails generate copy article name title tags category date

    This will create:
        app/models/article.rb
        spec/models/article_spec.rb
        lib/generators/article/article_generator.rb
        lib/generators/article/templates/view.md.erb
        lib/generators/article/USAGE