I guess I think the JavaScript console isn't something a lot of HTML + CSS designer/developers like me know much about. My vision of this tool is to make it for people who know how to drop a few files on their web server, link to them, adjust a property or two and have it working.
I see. What I imagined is like a one-click website that would throw it on top of an existing website, but that's just a suggestion. Tweakable parameters (or some way of discovering the grid of the website) would be cool, too.