Committed all the things.
Updated core: 7.19 → 7.21
Updated token: 7.x-1.4 → 7.x-1.5. Updated twitter_username: 7.x-1.2 → 7.x-1.3
Created the needed file/directory for drush aliases to work.
Created a repo specific drushrc.php with two useful drush shortcuts.
Created instructions for setting up and using drush aliases.