Add videos of sessions
Notebook created in class for Lesson 1
Merge branch 'master' of attps://github.com/cliburn/workshop-swc
Branch merge.
Explicit setting of matplotlib inline
minor changes to sql.md lesson
Merge branch 'master' of https://github.com/cliburn/workshop-swc
added design slide to sql presentation
adding all examples as slides to sql.odp
Lesson 3: Simplified biopython and matplotlib code in an attempt to clarify.  Added biopython exercises.
Merge branch 'master' of github.com:cliburn/workshop-swc
Merging in updates to Lesson 3
Solutions to Ex 3
branch merge
index.html: removed broken cheat sheet link
IO session typed in class
Merge branch 'master' of github.com:cliburn/workshop-swc
Merging changes to index.html
Added notes (in comments) about key points to discuss.
Moved git material into lessons directory