update
Merge remote-tracking branch 'upstream/master'
Added some homework
Added HW files
Fixed a small error
Added a hw 2
Set correct answer for question 2

The underscores were missing around the correct answer for question #2
Worked on hw2
Merge pull request #2 from RobinSmithCA/patch-1

Set correct answer for question 2
Merge branch 'master' of github.com:bcaffo/courses
Added hw2
Added a hw2
Minor corrections to intro page

Changed from Quiz 1 to 2 and removed extraneous runif(1) text.
Merge pull request #3 from RobinSmithCA/patch-2

Minor corrections to intro page
recompiled 03_04
Fixed some errors
Added some figures
Added a bunch of pdfs
Added some lecture files
Merge remote-tracking branch 'upstream/master'