This is a composer based installer for the Open Social distribution.
It's just composer, isn't it awesome? :)
composer create-project goalgorilla/social_template:dev-master DIRECTORY --no-interaction
Composer will create a new directory called DIRECTORY. Inside you will find the html directory with the entire code base of Open Social distribution. You should be able to install it like any other Drupal site.
Checkout this presentation from @ModsUnraveled.