Add teaching notes slide re: creation of a desktop workspace directory.
Add teaching notes slide re: cloning Nelle's directories and files.
Change directory name to one the learners will actually have.
Add Mercurial collaboration teaching notes slide.
Fix rendering of double-hyphens in command flags.
Add Mercurial collaboration demo setup teaching notes slide.
Add Mercurial conflicts and merging teaching notes slide.
Add Mercurial open science teaching notes slide.