cd /path/to/where/you/cloned/air-light/binand run
sh newtheme.sh. This script takes care of the rest as it updates textdomain with your project name, checks updates for air and npm packages, runs npm install, fetches devpackages, sets up gulp, cleans up the leftover files and activates the theme via WP-CLI.
cd ~/Projects/yourproject, run
gulpand start coding!