Using Font Awesome

You can add  Font Awesome icons to your menus by adding fa-{icon_name} to the menu's icon class field.  For example, if you want use the car icon from Font Awesome add fa-car to the icon class field.

Note: you can use these fonts in your tab (footer) menu; however, they don't have outlined icons like the Ionic icons.  iOS uses the outline icons for the unselected tab items.

Font Awesome in Custom Pages

You can use Font Awesome in custom pages by adding the fa and fa-icon classes to your HTML element.  The custom pages require both the fa and fa-{icon} classes, but to use it in the menu you only need to use the fa-{icon}.

<span class="fa fa-car"></span>