Update for Mocha testing with Create React App 2

[harrellb]

The original instruction sin the book and the samples here don't work for apps created with Create React App 2. Anyone have any idea how to make this work or how to force Create React App 2.0 to create a project with the same dependencies and other files as the previous versions of create react app? I have tried all kinds of solutions but always run into one roadblock or another and can't find articles on how to do this.

Thanks,

Bill