Make sure you have MongoDB installed and your LAMP set-up with PHP MongoDB extension.

Drush is require to run the script (./bin/build.sh), you also need to have Compass to compile the default theme SASS into CSS.

Configure the build script by copying the default template default.project.conf as project.conf and fill out the blanks

cp default.project.conf project.conf

Build the drupal distribution, e.g.

./bin/build.sh -m site.make -c site.conf