Added a starting ipynb for tracking repo health with github api

Hi everyone,

I started an IPython notebook recently to work on accessing the Github API to grab and work with data for tracking repository health. All you need to do is an a Personal API key to a private settings.py file and this notebook should run for any public repository. The only current dependency to running this is Python Pandas (which has its own dependencies)

Major question: is this repository the right place to collaborate and work on this?