Intro XML Done

seeing as the class is over, i think this is the end of it. Sweet! need to check that there aren't any tapes that i've totally failed to UL, but otherwise this should be ready to roll. need to check in w josh to see if there's anything else he wants to add to it, and then we launch.

next up:

- test / proof
- check w josh
- deploy

and then start worrying about a feed for the Advanced class