The NodeJS builder script is completely new and some comments are in order I believe!
* External dependencies are: substack/node-optimist ded/sqwish and mishoo/uglifyjs2
  * `optimist` is used for command line arguments parsing and documentation. If you run `./builder.js` or `./builder.js -h`, you'll get a nicely formatted help message with usage information.
  * `sqwish` is used to perform most optimal CSS compression/ minification
  * `uglifyJS` is used to perform most optimal JS compression/ minification.

All compression options can be turned on/ off via command line flags. `minify-js` and `combine-js` are only useful when packaging an add-on for release, resulting in smaller packages.

Some TODO's I copied over, others I introduced - but are not blocking proper functioning of this script. All in all I think this amounts to a significant improvement and ready for the next step: Chrome addon support.