Merge pull request #59 from ncarchedi/master

The rest of the overviews for data science toolbox course -- see note below
added repo lecture
Merge branch 'master' of https://github.com/jtleek/modules into jeff
Merge pull request #60 from jtleek/jeff

Merged in creating repos lecture
More sane directory names
edits and split slides
Revise/split slides
Split slides, updated
Split/update slides
Update/split slides
Update/split slides
Update/split slides
update/split slides
finished dst, boom! goes the dynamite
Merge branch 'master' of https://github.com/jtleek/modules into jeff
Merge pull request #61 from jtleek/jeff

Finished DST for now
adding basic Github
Merge branch 'master' of https://github.com/jtleek/modules into jeff
adding basic Github
Update title slide; split