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CLKParametricAnimations 0.1.0

You want to add pod 'CLKParametricAnimations', '~> 0.1' similar to the following to your Podfile:

target 'MyApp' do
  pod 'CLKParametricAnimations', '~> 0.1'
end

Then run a pod install inside your terminal, or from CocoaPods.app.

Alternatively to give it a test run, run the command:

pod try CLKParametricAnimations

A nice iOS extension that gives CAKeyframeAnimation support for all of the complex easing curves found at http://easings.net