Added some regression lectures
Worked a lot on the intro regression lectures
Worked on lecture 01
Finished lecture 01_01.RmD
Made a name change
Finished 2nd and 3rd lectures in module 1
3rd lecture finalized
Added lecture on regression to the mean
Finished lecture 01_05
Added 01_06
Merge pull request #36 from bcaffo/master

Added a metric ton of regression notes