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
Added hw2
Added a hw2
Minor corrections to intro page

Changed from Quiz 1 to 2 and removed extraneous runif(1) text.
recompiled 03_04
Fixed some errors
Added some figures
Added a bunch of pdfs
Added some lecture files