Added toolbox lecture, hopefully just to jeff
started on data science toolbox
toolBox almost done
added markdown lecture
Start the process of creating new directories for using dev version of slidify
Libraries directory from dev slidify
Copy over old CSS file to preserve look
Move loading/installing packages to new dev directory
Revise paths to libraries/assets
Fix paths to images
Merge pull request #12 from seankross/master

added markdown lecture
Merge pull request #13 from rdpeng/reorg

Reorg of roger's lectures to deal with showing methods/classes in his lecture
Merge pull request #14 from jtleek/jeff

added toolbox lecture
typos
added mathNotation lecture
Merge pull request #15 from jtleek/jeff

Added lecture on math notation in R markdown