This is not for swift 4.0

[SumeetMourya]

Are you still supporting this?

[aifedorov]

Hi, 9SumeetMourya!
You can try it:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '3.2'
    end
  end
end

This makes Xcode build all your pods with Swift 3.2.

[chakery]

you can use version 2.0.1, see README for details.