Added two mpl bubble chart examples
python run.py process mpl-7d-bubble mpl-bubble-colormap
plotly_url -> plot_url for python exec in mpl-7d-bubble
python mpl_exceptions.py
python publish.py test
python publish.py publish
revamp mpld-7d-bubble to use fewer lines
processed with run.py and mpl_exceptions.py
publish-test and publish-publish for revamped example.
created a better color-map example that doesn't use a url
replaced all instances of old mpl-bubble-colormap with new.
updated configs with better names, then run/published changes.
Merge pull request #15 from plotly/mpl-bubbles

Mpl bubbles