Start loading/installing packages lecture
Talk about CRAN/Bioconductor; basic install
Rename lecture directory
Screenshots for Load/Install pkgs in RStudio
Cropped screenshot
Rename image
Resize image
Using install.packages
Draft lecture slides
Talk about search list and compute number of packages
Shorten Bioconductor reference
Merge pull request #9 from rdpeng/loadpkg

Installing and Loading Packages
Run code dynamically
Don't track html and md files
Add cachemean example
Fix some typos; adjustments
Merge pull request #10 from rdpeng/classes-methods

Classes methods
Fix a typo
Don't track PDF version of slides
Remove ridiculous hack needed to get S4 to work in slidify

There was a bug in slidify that prevented using setClass and
setMethod inside a slidify presentation. Ramnath fixed this in the
dev branch of slidify.

However, a separate problem has arisen which is that the current
presentation does not compile correctly with the JHSPH template.
Needs investigation....