at command level, attach the `shorthand` Hash to the completion
function. The completion command will then try to complete shorthands
and longer flag based on user input.
completing after just one `-` will complete the list of short flags.
completing after just two `--` will complete the list of longer flags.
- Support local path repositories
- Fix various issues with the list command
- If no component.json is detected, bower now creates one if the --save option is true
- Save command now saves in the form of ~tag instead of latest
- Update command now correctly process passed packages
- Fix packages in which the name couldn't be correctly extracted from the remote URL
- Add --force flag, just like the install command
