Merge pull request #15 from tebarkley/notebook-finalization

final notebook updates
Updated Viz Code- Didn't go through last time

Looks like my code for the D3 visualizations both within the IPython
Notebook and the HTML/JS didn’t make it in my last commit. I’ve
remedied that situation. In the IPython Notebook it is just the last
two cells that I have added.
final notebook