Combine Primary and Secondary Menu's in Genesis in responsive view.

responsive-menu.js

jQuery(function( $ ){

	$("header .genesis-nav-menu, .nav-primary .genesis-nav-menu, .nav-secondary .genesis-nav-menu").addClass("responsive-menu").before('<div class="responsive-menu-icon"></div>');

	$(".responsive-menu-icon").click(function(){
		$(this).next("header .genesis-nav-menu, .nav-primary .genesis-nav-menu, .nav-secondary .genesis-nav-menu").slideToggle();
	});

	$(window).resize(function(){
		if(window.innerWidth > 767) {
			$("header .genesis-nav-menu, .nav-primary .genesis-nav-menu, .nav-secondary .genesis-nav-menu, nav .sub-menu").removeAttr("style");
			$(".responsive-menu > .menu-item").removeClass("menu-open");
		}
	});

	$(".responsive-menu > .menu-item").click(function(event){
		if (event.target !== this)
		return;
			$(this).find(".sub-menu:first").slideToggle(function() {
			$(this).parent().toggleClass("menu-open");
		});
	});
	
	setupMenus();
	
	$( window ).resize( function() {
	  setupMenus();
	});
	
	function setupMenus () {
	  
	  if ( window.innerWidth <= 768 ) {
	    $( 'ul.menu-secondary > li' ).addClass('moved-item'); //tag moved items so we can move them back
	    $( 'ul.menu-secondary > li' ).appendTo( 'ul.menu-primary' );
	    $( '.nav-secondary' ).hide();
	  }
	  
	  if ( window.innerWidth > 768 ) {
	    $( '.nav-primary .genesis-nav-menu, nav .sub-menu' ).removeAttr( 'style' );
	    $( '.responsive-menu > .menu-item' ).removeClass( 'menu-open' );
	    $( '.nav-secondary' ).show();
	    $( 'ul.menu-primary > li.moved-item' ).appendTo( 'ul.menu-secondary' );
	  }
	  
	}

});