Creating the social nav menu from http://justintadlock.com/archives/2013/08/14/social-nav-menus-part-2

social-nav-menu-call.php

<?php
// call it using this code

get_template_part( 'menu', 'social' );

social-nav-menu-functions.php

<?php
// this goes in functions.php

add_action( 'init', 'my_register_nav_menus' );

function my_register_nav_menus() {
  register_nav_menu( 'social', __( 'Social', 'example-textdomain' ) );
}

social-nav-menu-walker.php

<?php
// this will go in template-tags.php

if ( has_nav_menu( 'social' ) ) {

  wp_nav_menu(
		array(
			'theme_location'  => 'social',
			'container'       => 'div',
			'container_id'    => 'menu-social',
			'container_class' => 'menu',
			'menu_id'         => 'menu-social-items',
			'menu_class'      => 'menu-items',
			'depth'           => 1,
			'link_before'     => '<span class="screen-reader-text">',
			'link_after'      => '</span>',
			'fallback_cb'     => '',
		)
	);

} ?>