Add Widget to Primary Nav - Genesis

additional.css

/* Primary Navigation Widget
------------------------------------------------*/
.genesis-nav-menu .widget-area {
    float: right;
	padding: 5px 15px 0 0;
}

@media only screen and (max-width : 1024px) {
  .genesis-nav-menu .widget-area {
    float: none;
    padding: 15px 15px 0 15px
  }
}

functions.php

<?php
//* Do NOT include the opening php tag shown above. Copy the code shown below.

//* Register Primary Navigation Widget
genesis_register_sidebar( array(
	'id'          => 'primary-nav-widget',
	'name'        => __( 'Primary Nav Widget', 'theme-name' ),
	'description' => __( 'This widget appears in the primary-navigation.', 'theme-name' ),
) );

//* Add Primary Navigation Widget Areaa
add_filter( 'genesis_search_button_text', 'c8d_search_button_text' );
function c8d_search_button_text( $text ) {

	return esc_attr( '&#xf179;' );

}
add_filter( 'genesis_nav_items', 'c8d_primary_nav_widget', 10, 2 );
add_filter( 'wp_nav_menu_items', 'c8d_primary_nav_widget', 10, 2 );

function c8d_primary_nav_widget($menu, $args) {
	$args = (array)$args;
	if ( 'primary' !== $args['theme_location'] )
		return $menu;
	ob_start();
	genesis_widget_area('primary-nav-widget');
	$social = ob_get_clean();
	return $menu . $social;
}