message: docs: add AppRun Site
diff: @@ -41,4 +41,18 @@ app.start() // to start your application
  ```
  +## AppRun Site Framework
  +
  +[AppRun Site](https://github.com/yysun/apprun-site) is an framework for building AppRun applications. It has the following features:
  +
  +* Progressive Web App (PWA) - support offline
  +* Single Page App (SPA) - routing using / or #
  +* 4 built-in layouts and bring your own
  +* Compile html, markdown pages to AppRun components
  +* Auto generate the index of pages
  +* Build app logic using AppRun/Web components
  +* Targets ES5 or ES Module
  +
  +Please visit [AppRun Site Documentations](https://yysun.github.io/apprun-site).
  +
  Ready to try it yourself? Head over to [Getting Started](/01-start).
  