Set up automated testing

[dergachev]

Maybe travis and minitest?

The following scenarios will need to be tested:

• Copy drupal code from /vagrant
• Deploy directly to /vagrant
• settings.php optionally created (and not blown away)
• drush site-install works (and only if db non-empty)
• sql loading works (and only if db non-empty)
• vagrant provision never obliterates anything
• deploy via git (future)
• file permissions (eg at least does "drush dl" work? for user "vagrant" and for user APACHE_USER)
• post-load script - does it work?

[dergachev]

Here's how @patcon does his testing for PHP: https://github.com/myplanetdigital/myplanet/blob/develop/.travis.yml

Still have to figure out how to do this for chef cookbooks.