Add kanso watch to the supported commands.

Watches a directory tree for changes.

For the moment naively listens to all files under the supplied directory and updates the repository 100ms after the last change.

All of the parameters passed to the watch command are applied to the push command which is triggered from file changes.
Update lib/packages.js
bump target version
Merge remote-tracking branch 'holaso/patch-1' into dev
Merge remote-tracking branch 'wombleton/kanso_watch' into dev
fix working with vhosts that include a port number
Resolve merge conflict
Bump to 0.3.0