The Inspector adds a "jsHub Tag" tab to Firebug. The Firebug extension allows you to view the events which are generated by a jsHub tag.
The extension code is in the public/xpi folder.
There's a simple web application wrapper, coded with Sinatra. The wrapper has code to ZIP the extension files into a .xpi archive for installing into your browser.
To start the web app:
sudo gem install sinatra
sudo gem install sinatra-static-assets
ruby inspector.rb
You can also use Passenger to deploy the application on a sub-path of an Apache server. There is a Rack-compliant config.ru file in the root of the folder.