appraise "rails-4.1" do
  gem "rails", "~> 4.1.0"
end

appraise "rails-4.2" do
  gem "rails", "~> 4.2.0"
end

appraise "rails-5.0" do
  gem "rails", "~> 5.0", ">= 5.0.2"
end

appraise "rails-5.1.beta" do
  gem 'rails', '~> 5.1.0.beta1'
end