http://dotmobo.github.io/makefile-frontend.html
https://medium.com/@housecor/why-i-left-gulp-and-grunt-for-npm-scripts-3d6853dd22b8#.o79dos0q4
http://www.paulfleury.fr/workflow-bootstrap-sass-avec-gulp-et-bower/
http://wes.is/2015/01/13/how-to-use-yeoman-to-scaffold-your-next-web-app/