Running rails engine with rspec

gistfile1.sh

# http://viget.com/extend/rails-engine-testing-with-rspec-capybara-and-factorygirl

rails plugin new my_engine --dummy-path=spec/dummy --skip-test-unit --mountable

# or, the full monty:
rails plugin new active_scraper --mountable --dummy-path=spec/dummy --skip-test-unit --skip-javascript --skip-sprockets --skip-action-view


# https://github.com/rspec/rspec-rails
rails generate rspec:install



# edit engine.rb

module MyEngine
  class Engine < ::Rails::Engine
    isolate_namespace MyEngine

    # monkey patch via: http://pivotallabs.com/leave-your-migrations-in-your-rails-engines/
    initializer :append_migrations do |app|
      unless app.root.to_s.match root.to_s
        app.config.paths["db/migrate"] += config.paths["db/migrate"].expanded
      end
    end


    config.generators do |g|
      g.test_framework      :rspec,        :fixture => false
      g.assets false
      g.helper false
    end

  end
end

How to run this task from the console?