Nightly commit, small lecture changes
slightly revised lecture 01_05 for new recording
Revised residual variation
Worked on the residuals lecture
Worked on the inference regression slides
Fixed 02_02 pdf
Minor changes to 02_01
Added a small change to 02_01
Added lectures as zip file
Added rmd zip directory
Merge pull request #1 from bcaffo/master

update 10/12/2014