update README

Author: richex-cn

README.md

@@ -1,5 +1,7 @@
 # web-screenshot
 
+[中文](/README.zh-CN.md) / [GitHub](https://github.com/richex-cn/web-screenshot) / [码云](https://gitee.com/Richex/web-screenshot)
+
 This is a remote screen viewing tool for Windows that looks at the screen display without a remote connection.
 
 ![](README_assets/20190802_141950.png)
@@ -13,3 +15,4 @@ node index.js
 
 Run above command, Then open `http://localhost:2333/` in your browser.
 
+The page is automatically refreshed every 10 seconds, of course you can also manually refresh the page.

README.zh-CN.md

@@ -1,5 +1,7 @@
 # web-screenshot
 
+[英文](/README.md) / [GitHub](https://github.com/richex-cn/web-screenshot) / [码云](https://gitee.com/Richex/web-screenshot)
+
 这是一个用于Windows的远程屏幕查看工具，用于在不进行远程连接的情况下查看屏幕显示内容。
 
 ![](README_assets/20190802_141950.png)
@@ -13,3 +15,4 @@ node index.js
 
 运行以上命令，然后在浏览器中打开 `http://localhost:2333/`
 
+网页每10秒会自动刷新一次，当然你也可以手动刷新页面。