docs(usage): add manual build guide

jsun969 · jsun969 · commit c743a27533c4 · 2022-07-08T09:40:05.000+08:00
diff --git a/README.md b/README.md
@@ -6,7 +6,8 @@
 
 ## Usage
 
-1. Install extension [here]()
+1. Install extension in [Chrome Web Store]()  
+   _Or build it yourself. See [Production](#production)_
 2. Install [devtools](https://github.com/react-hook-form/devtools) in your project
 
 ```bash
