You are correct. I removed the Data URI (1) to keep the mobile version tiny (including it more than doubled its size); and (2) because I implemented HTML5 offline storage, I felt it was less useful.
I can add it back (likely as a link in the FAQ). In the meantime, it is easy to create your own. This is the tool I use (check "base64"):
http://software.hixie.ch/utilities/cgi/data/data