Autoclean tokens file always has version 0.0.1

[fmitchell-r7]

When the autoclean task saves a list of tokens, it will always have version 0.0.1. The code that returns the version is looking for a VERSION file. We don't have a VERSION file, since we're using thor-scmversion and using Github tags.

We should update our CI process to create a VERSION file that gets packaged into the gem when it's built.