adding fresh FoundationPress theme from scratch

FoundationPress/library/class-foundationpress-top-bar-walker.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Customize the output of menus for Foundation top bar
+ *
+ * @package FoundationPress
+ * @since FoundationPress 1.0.0
+ */
+
+/**
+ * Big thanks to Brett Mason (https://github.com/brettsmason) for the awesome walker
+ */
+
+if ( ! class_exists( 'Foundationpress_Top_Bar_Walker' ) ) :
+	class Foundationpress_Top_Bar_Walker extends Walker_Nav_Menu {
+		function start_lvl( &$output, $depth = 0, $args = array() ) {
+			$indent  = str_repeat( "\t", $depth );
+			$output .= "\n$indent<ul class=\"dropdown menu vertical\" data-toggle>\n";
+		}
+	}
+endif;