Font Awesome Offline
  If some of your users will be working offline, you need to use the Desktop version of Font Awesome.
  This image is from the desktop version of Font Awesome. All that has been done is to open the SVG downloaded from Font Awesome in a text editor, paste that text in source view and apply the class.
  On the Font Awesome site, scroll down the home page to Other Ways To Use and click on Desktop. That will download all the icons so that you can add them to your project for users who will not always view online.