Bootstrap has removed support for "Customize & download" for version 2.3.2. I'm currently working on an updated version for Bootstrap version 3. Let's hope nothing comes in between to stop me finishing it. Follow my Twitter account for updates at @prabinpebam.Updated on 5th May 2014
Please visit the official Bootstrap website at http://twitter.github.com/bootstrap/ for full documentations and downloads.
Finally, thanks to myself for finally making a decent customization tool for Bootstrap. :)
Visit my site at http://designspebam.com to see my other works