Remove subtitle
Fix up links and author
Add Jeff's transcripts
Edit paths
Merge branch 'profiler'

* profiler:
  Edit paths
Move plotting lectures into EDA
Lecture on principles of data graphics
Plotting systems in R
Merge pull request #27 from rdpeng/plotting

Plotting
Rename plotting directory
Updated base plotting lecture
Separate lecture on Graphics Devices
Add initial slide
PDF file is out of date
Revised lecture on base plotting
Merge pull request #28 from rdpeng/plotting

Plotting
Remove out-of-date PDF
update lattice lecture
Add README for Principles lecture
Add MAACS environmental data for bigger example