GK provides dozens of custom components for you that design and markup web apps. Actually, you can create your own custom HTML tag by GK.
Step1: Start webServer
Make sure you have installed the latest version of nodejs.
cd gk/
node static_server.js
Step2: open Browser
<div is='raty' score='3'></div>
<div is='qrcode'>GK</div>
<div is='gmap' style='width:100%;height:200px;' zoom='12' address='Qianzhen, TW'></div>
<gfont size='256px'>GK</gfont>