Update README.md

README.md

@@ -1,6 +1,9 @@
 # Razor Barcode Library
 A Razor Class Library, equipped with the [Dynamsoft JavaScript Barcode SDK](https://www.npmjs.com/package/dynamsoft-javascript-barcode), enables the creation of web-based barcode reader applications entirely in C#.
 
+## Online Demo
+[https://yushulx.me/Razor-Barcode-Library/](https://yushulx.me/Razor-Barcode-Library/)
+
 ## Prerequisites
 - [Dynamsoft JavaScript Barcode License](https://www.dynamsoft.com/customer/license/trialLicense?product=dbr&utm_source=github&utm_campaign=razor-barcode-library)
 
@@ -45,4 +48,4 @@ A Razor Class Library, equipped with the [Dynamsoft JavaScript Barcode SDK](http
 ## Example
 - [Blazor WebAssembly](https://github.com/yushulx/Razor-Barcode-Library/tree/main/example)
 
-    ![razor barcode reader](https://user-images.githubusercontent.com/2202306/282373638-b2cf96db-8466-4c3a-a802-4fd39cec42cd.png)
+    ![razor barcode reader](https://user-images.githubusercontent.com/2202306/282373638-b2cf96db-8466-4c3a-a802-4fd39cec42cd.png)