$ grunt serve
If that doesn't work for you, make sure you've done the one-time set up from this directory:
$ npm install
$ bundle install
If you don't have bundle, run
$ gem install bundler
$ grunt deploy
If you want to upload anything for distribution, put it in /srv/milessabin.com/public/htdocs/files, which is mapped to http://milessabin.com/files.