adding fresh FoundationPress theme from scratch

FoundationPress/library/sticky-posts.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Change the class for sticky posts to .wp-sticky to avoid conflicts with Foundation's Sticky plugin
+ *
+ * @package FoundationPress
+ * @since FoundationPress 2.2.0
+ */
+
+if ( ! function_exists( 'foundationpress_sticky_posts' ) ) :
+	function foundationpress_sticky_posts( $classes ) {
+		if ( in_array( 'sticky', $classes, true ) ) {
+			$classes   = array_diff( $classes, array( 'sticky' ) );
+			$classes[] = 'wp-sticky';
+		}
+		return $classes;
+	}
+	add_filter( 'post_class', 'foundationpress_sticky_posts' );
+
+endif;