Enqueue Ionicons on your site with the Genesis Framework.

functions.php

<?php
//* Do NOT include the opening php tag

// Enqueue Ionicons.
add_action( 'wp_enqueue_scripts', 'sp_enqueue_ionicons' );
function sp_enqueue_ionicons() {

	wp_enqueue_style( 'ionicons', '//code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css', array(), CHILD_THEME_VERSION );

}