Start slidifying RR Concepts lecture
Merge branch 'master' into RR

* master:
  Revised lecture on base plotting
  PDF file is out of date
  Add initial slide
  Separate lecture on Graphics Devices
  Updated base plotting lecture
  Rename plotting directory
  Plotting systems in R
  Lecture on principles of data graphics
  Move plotting lectures into EDA
Merge branch 'master' into RR

* master:
  First big update to prediction
  Break slides into separate files
  Reorganize a little
  Remove space from directory name
  Rename directory to remove space
  Update lattice lecture
  Add MAACS environmental data for bigger example
  Add README for Principles lecture
  Worked on lecture 1 and moved content from the intro to the probability one.
  update lattice lecture
  Remove out-of-date PDF
  Add Jeff's transcripts
  Fix up links and author
  Remove subtitle
Merge branch 'master' into RR

* master: (34 commits)
  Added 01_06
  Finished lecture 01_05
  Added lecture on regression to the mean
  3rd lecture finalized
  Finished 2nd and 3rd lectures in module 1
  Made a name change
  Finished lecture 01_01.RmD
  Worked on lecture 01
  Worked a lot on the intro regression lectures
  Add ggplot2 lectures
  first preprocessing lecture
  started preprocessing lecture
  fixed trainControl lecture
  Commit lectures on caret
  fixed small typos in getting help lecture of r programming course
  fixed exponent on last slide of reading data lecture
  cropped create a repo images for better display
  cropped intro to github screenshots for better display
  cropped intro to git screenshots for better display
  fixed ordered list in functions lecture of r programming course
  ...
Added lecture 6
Moved some stuff around
moved more files around
reorganizing more
moved some stuff around
Added a readme file
Editted the readme
Merge branch 'master' into RR

* master: (43 commits)
  Typos
  Add PDF slides and individual slides
  Typo
  Rename directories
  Take out expository graphs for now
  Finish tweaking hclust lecture
  Edit title slide
  Clean up kmeans lecture
  Finish cleaning up Jeff's slides
  Remove slide on fast.svd
  Edit Jeff's slides
  Update Jeff's slides
  Remove numeric prefix for now
  Revise/clean up Jeff's slides
  Add local copy of clustering function
  Finish exploratory graphs lecture
  Move old lecture slides
  Remove missing values from dataset
  New exploratory graphs slides
  Create annual avg PM2.5 data averaged over 2008-2010
  ...
added a figure
finalizing the first lecture
finalizing lecture 1
trying to get math to render
working on equations
Worked on inference regression model
Added inference lecture
Added the start of a multivariate lecture