Add links
Link for IPy NBs
Added python notebooks for Ch1 and python tips for IDL users from Ian
Adding iPython Notebooks for 06/26/2013 meeting
Adding ipython notebooks for 6/26 meeting covering Ch.1 and Python tips for IDL users from Ian
Merge pull request #2 from rachelbezanson/master

Added iPython notebooks for Ch1 and python tips for IDL users from Ian
Reorganize