Update README.md

DebugST · web-flow · commit 60998d10bfec · 2021-01-06T15:27:48.000+08:00
diff --git a/README.md b/README.md
@@ -12,6 +12,8 @@
 
 ![STNodeEditor](https://debugst.github.io/DotNet_WinForm_NodeEditor/images/formImage.png)
 
+<img alr="STNodeEditor" width=537 src="https://debugst.github.io/DotNet_WinForm_NodeEditor/images/formImage.png"/>
+
 ## 简要说明
 * 画布
 	* 移动 `鼠标中键` 拖动 Mac用户可二指拖动 `触控板`
