adds codegangsta/cli
Signed-off-by: Simon Thulbourn <simon+github@thulbourn.com>
makes the name optional for stop/start/ssh/upgrade

Signed-off-by: Simon Thulbourn <simon+github@thulbourn.com>
implements a -c/--command flag for ssh

Signed-off-by: Simon Thulbourn <simon+github@thulbourn.com>
Merge pull request #72 from sthulb/cli

Implement new codegangsta/cli lib
add a rename command

Signed-off-by: Wei-Ting Kuo <waitingkuo0527@gmail.com>