pca lecture
Merge pull request #39 from jtleek/jeff

pca lecture
Added syllabus and announcements to p+ml
Merge pull request #40 from jtleek/jeff

Added syllabus and announcements to p+ml
PM2.5 data for case study
Finish case study script
PDF slides in two formats
Remove spaces rom names
Split slides
Added syllabus and announcements to obtaining data
Update p+ml announcements
Add dst announcements
Merge pull request #41 from jtleek/jeff

Jeff
Add regression lectures
Merge pull request #42 from jtleek/jeff

Add regression lectures
Add plotting lecture
Merge pull request #43 from jtleek/jeff

Add plotting lecture
Merge branch 'master' into eda

* master:
  Add plotting lecture
  Add regression lectures
  Add dst announcements
  Update p+ml announcements
  Added syllabus and announcements to obtaining data
  Added syllabus and announcements to p+ml
  pca lecture