getting started with virtualenv

Change-Id: Idd13a181265b3e22d649cdbee1b5ec014aead3aa
Signed-off-by: Doug Hellmann <doug.hellmann@gmail.com>
add a couple of final notes

Change-Id: Ifcea17873a8a239858f7f6f81306d7fae8df2319
first draft of operator overloading talk

Change-Id: Ice2bca944156ec10710d8ab5dd7c2081ea4b04ad
update headings and reference URL

Change-Id: I6e323e6cd06563eea7b202e9c42848f0cab2a710
update makefile to build slides with tools in virtualenv

Change-Id: Ibe27edddae7289f49de8d74344e29b9e2e9f900e
Add flake8 presentation

Change-Id: I37579875204f356d6d0c3aac2250abc726913894