Added completion (show, help, enable, disable) for the bash-it function
Git Aliases: Remove duplicate darwin clause/add default clause for git diff.
Add ability to override using $EDITOR
Remove --no-site-packages as that is now the default behavior
Add a wovenv to match mkvenv
Using $VIRTUAL_ENV to set virtualenv prompt
Merge pull request #187 from manojlds/virtualenvprompt

Using $VIRTUAL_ENV to set virtualenv prompt
Create plugins/enabled directory if it doesn't already exist

- This fixes a bug I saw after installing bash-it on Mac OS X 10.6.8.
  During bash-it installation I chose not to install any plugins. After
  install, when `bash-it enable plugin foo` was complaining that the
  enabled directory did not exist.
Merge pull request #193 from upgradingdave/small-fix-ensure-enabled-dir-exists

Create plugins/enabled directory if it doesn't already exist