Customized forked repositories.

Determine a way to allow a forked repository to customize Verbosity. It may be a simple as including a `/verbosity-custom.js`. A forked repository can reference this file in the global GitHub pages. That script can do anything to customize the page, applying styles, altering HTML, adding analytics, etc.

This will allow me to move my own http://gaug.es/ tracking code out of the way.

Start at the GitHub Pages entry point and trace how page scripts are loaded. Evaluate the proposed /verbosity-custom.js hook and verify that a fork can use it to customize styles, HTML, or analytics without changing the main project. Done means a fork can add the file and its customizations are applied.

Written by the indexing model from the issue text.