Update README.md

Author: rayworks

README.md

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 # DroidCast
 
-[中文文档](/README_CN.md)
+[中文文档](/README_CN.md) [![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/rayworks/droidcast)
 
 An experimental demo for capturing and displaying screenshot of Android devices in the WebBrowser.
 It's compatible with Android OS 4.0+ and could be used as a convenient tool for taking a batch of