added more parallelism items
added all the top 500 stuff; nearly finished
cleanup of the notes. I think I'm pretty much finished...
added a little bit on other architecture; first class was a little short so want to make sure I have enough.
beginning of class 3
starting class 3...
more of class 3
added directions for building tex to readme, making progress on class 3.
finished with initial run through of class 3. I think it's kinda sucky, but it'll do for now...