added groupby examples
a Project Starter notebook for OpenContext.org
Merge branch 'master' of github.com:rdhyee/working-open-data-2014
Day 10 and updates
Merge branch 'master' of https://github.com/rdhyee/working-open-data-2014

Pulling in from upstream
	modified:   mynotebooks/Day_08_A_Metro_Diversity.ipynb
	More work on assignment.