Update README.md

lidangzzz · lidangzzz · commit f576f77aa51f · 2021-08-28T01:58:29.000-05:00
diff --git a/README.md b/README.md
@@ -31,6 +31,10 @@ yarn install
 yarn watch
 ```
 
+## User Manual
+
+Hedgehog Book: [https://hedgehog-book.github.io/](https://hedgehog-book.github.io/)
+
 ## Video Tutorial
 
 ### Youtube
