appraise "rails-3-2" do
  gem "rails", "~> 3.2"
end

appraise "rails-4-0-5" do
  gem "rails", "4.0.5"
end

appraise "rails-4-1-stable" do
  gem "rails", "~> 4.1.1", github: 'rails/rails', branch: '4-1-stable'
end