Update LICENSE

Author: yushulx

LICENSE

@@ -1,5 +1,3 @@
-For web:
-https://www.dynamsoft.com/Products/barcode-reader-license-agreement.aspx#javascript
-
-For node:
-https://www.dynamsoft.com/Products/barcode-reader-license-agreement.aspx
+License Notice 
+This folder contains code samples ("Sample Code") for use with Dynamsoft Barcode Reader, a commercial software development kit licensed by Dynamsoft. The Sample Code may be modified and included in your end user software under the terms of the Dynamsoft Software License Agreement  https://www.dynamsoft.com/Products/barcode-reader-license-agreement.aspx (“Commercial License”). Except as expressly stated in the Commercial License, no other rights are granted in the Sample Code. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+Copyright © 2003–2021 Dynamsoft. All rights reserved.