update README

Author: TennyZhuang

README.md

@@ -9,3 +9,31 @@ Actually I get this idea by a CSS3 3D & animation demo, but I can't find it. If
 
 Created by [Yue Dayu](http://github.com/yuedayu) and maintained by [Lab μ](http://lab.mu).
 All right reserved.
+
+---
+
+Refactor by [TennyZhuang](https://github.com/TennyZhuang)
+
+## Prepare
+
+Install the [Parcel](https://parceljs.org/getting_started.html)
+
+```bash
+npm install -g parcel-bundler
+```
+
+## Development
+
+```bash
+# develop index page
+parcel app/index.html
+
+# develop config page
+parcel app/config.html
+```
+
+# Production Build
+
+```bash
+npm run build
+```