gulp-starter Install gulp globally: $ npm install --global gulp To use npm install sh --globall without sudo on osx : http://www.johnpapa.net/how-to-use-npm-global-without-sudo-on-osx/. Run gulp: $ gulp Run gulp task: $ gulp <task> Observe: $ gulp watch Sources : http://gulpjs.com/ http://www.alsacreations.com/tuto/lire/1685-ebauche-de-workflow-gulp-taches-uncss-includes-critical-css.html http://blog.smarchal.com/introduction-a-gulp/