opal/opal-rspec

appraise 'opal-0.11' do
  gem 'opal', '~> 0.11.0'
  gem 'opal-sprockets'
end

appraise 'opal-master' do
  gem 'opal', git: 'https://github.com/opal/opal.git'
  gem 'opal-sprockets', github: 'opal/opal-sprockets'
end