Merge pull request #13 from mattgiguere/master

session 11 materials
added nbviewer link
Merge pull request #14 from mattgiguere/master

Fixed typos and re-added 2 notebooks
added directory for this week
Merge pull request #15 from duncandc/master

added directory for this week
added corr func notebook
Merge pull request #16 from duncandc/master

added corr func notebook
clusters notebook
stuff for clusters notebook
Merge pull request #17 from ih64/master

ipython notebooks for today
ran locally