Would you like to publish the demo data to the repo as well, so we can test this app locally with some relevant data loaded? Thanks!
the actual command it runs is: doctrine:fixtures:load
(which are in the Fixtures bundle).
the script which setups the demo data is located in vagrant/puphpet/files/exec-once
if you don't use vagrant you'll need to run that sort of setup manually
Here's some more info on working with Symfony's fixtures bundle - http://symfony.com/doc/current/bundles/DoctrineFixturesBundl...