support more options

[Mathieu Arnold]

Right now, I have :

  guard 'rails_best_practices', spec: true, exclude: 'config/routes.rb --format html --with-mvim' do
    watch(%r{^app/(.+)\.rb$})
  end

would be great if I did not have to fiddle with the exclude argument :-)

[Nick Kugaevsky]

Found this useful gem yesterday. It's really great!
And I made some refactoring kugaevsky/guard-rails_best_practices@09bcd67
You can use master branch of my fork until logankoester merge my pull requests.