I would like to do something along the lines of: http://twitter.github.com/bootstrap/customize.html
People could select the components they want to download.
Could someone point me in the right direction?
The front end, at least, is all JS. Guts of the app are at http://twitter.github.com/bootstrap/assets/js/application.js.
Now, what happens at http://bootstrap.herokuapp.com is a more interesting question.