Font Awesome gives you scalable vector icons that can instantly be customized: size, color, drop shadow, and anything that can be done with the power of CSS. In Chapter 5 , Bootstrappin' Your Portfolio, you can read how to compile Font Awesome's CSS code into your local CSS by using Sass.
Here, we simply load Font Awesome's CSS code from CDN by linking it in the
html/layouts/default.html HTML template as follows:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css">