foundation-topbar-menu.php and foundation-topbar-walker.php should be required in the WordPress functions.php file.
The code in foundation-topbar.php should be added below the body tag in header.php
Setup a menu in WordPress admin under Appearance > Menus
Use the 'label' class on a menu item to create a menu section title
Foundation Top Bar Doc: http://foundation.zurb.com/docs/components/top-bar.html
I'm not sure if anyone commented on this so I'm just going to throw this out there. When the menu goes below 767px a parent tab that has a page attached to it and children becomes a non usable tab. You click on it and it just slides the menu over to the children rather than actually going to that page. Has anyone else experienced that and if so what was the fix to this? Thanks.