Add slides from git/github talk
Add poster from ICWSM 2012
Add to-do list to readme
Merge branch 'master' of github.com:dellsystem/slides
Rename ICWSM poster files
Update readme

Not actually using JessyInk
Add slides from Django talk today
Update to-do list in readme
Ignore temporary files
Add source file for PyLadies slides
Ignore slide PDFs

(Since they can be downloaded from Speaker Deck and/or regenerated.)

Next step: rewriting history to remove slide PDFs from previous commits