Replace Genesis Breadcrumbs "Home" text with Icon

genesis-breadcrumb-args.php

add_filter( 'genesis_breadcrumb_args', 'sp_breadcrumb_args' );
function sp_breadcrumb_args( $args ) {
    $args['home'] = 'Home';
    return $args;
}

genesis-breadcrumbs-home-icon.php

// Replace breadcrumbs "Home" with Home Icon
add_filter ( 'genesis_home_crumb', 'youruniqueprefix_breadcrumb_home_link' ); // Genesis >= 1.5
function youruniqueprefix_breadcrumb_home_link( $crumb ) {
    $crumb = '<a href="' . home_url() . '" title="' . get_bloginfo('name') . '"><i class="fa fa-home"></i></a>';
    return $crumb;
}

genesis-enqueue-fontawesome-css.php

add_action( 'wp_enqueue_scripts', 'youruniqueprefix_load_scripts' );
function youruniqueprefix_load_scripts() {
    wp_enqueue_style( 'youruniqueprefix-fontawesome' , '//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css' ); // font awesome css from cdn
}