appraise 'rails_4_mysql2_driver' do
  gem 'rails', '4.0.0'
  gem 'mysql2'
end

appraise 'rails_4_pg_driver' do
  gem 'rails', '4.0.0'
  gem 'pg'
end

appraise 'rails_4_sqlite3_driver' do
  gem 'rails', '4.0.0'
  gem 'sqlite3'
end
