appraise 'rails_3_1' do
  gem 'rails',  '~> 3.1.0'
end

appraise 'rails_3_2' do
  gem 'rails',  '~> 3.2.0'
end

appraise 'rails_4_0' do
  gem 'rails', '~> 4.0.0.rc1'
end
