appraise "rails-4.2" do
gem "activemodel", "~> 4.2.0"
end
appraise "rails-4.1" do
gem "activemodel", "~> 4.1.0"
end
appraise "rails-4.0" do
gem "activemodel", "~> 4.0.0"
end
appraise "rails-3.2" do
gem "activemodel", "~> 3.2.0"
gem "tzinfo", "~> 0.3"
end