added some stuff

[EricSchles]

most of the work here is very light - pgmpy isn't available in anaconda - so I included a small bit of code -

import sys
sys.path.append('/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/')

that looks for the python 3 framework - this only seems to be a problem on mac with jupyter notebook.

This is an initial thought of how to handle this, perhaps some other thoughts would be good around this.