First of all, you will need our MEL file that you will need to source.
Put it into your maya scripts directory so it's ready to roll.
source applyFramecurveTimewarp
You can also create a shelf button with a binding to the function framecurve.timewarpDialog().
A dialog will pop out prompting you to select your framecurve file and the object to timewarp. Select a file and then hit the Get button to select the object you are going to timewarp.
Activate the dialog, and your Hypergraph hierarchy will transform from this:
to this:
The main curve that now feeds the other curves will contain the Framecurve animation.
The scripts here are covered with framecurve license.