master
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', '~> 5.0.0' gem 'sinatra', '~> 2.0.0.beta', '< 2.1' end