appraise "activesupport2" do
  gem 'activesupport', '~> 2.3', :require => false
end

appraise "activesupport3" do
  gem 'activesupport', '~> 3.2', :require => false
end

appraise "activesupport4" do
  gem 'activesupport', '~> 4', :require => false
end
