Update to append the customizer to the page

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-products-designer/trunk@1013600 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update to append the customizer automatically

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-products-designer/trunk@1013601 b8457f37-d9ea-0310-8a92-e5e31aec5664