更新 'README.md'

README.md

@@ -3,6 +3,15 @@ dxf2elmt is CLI program which can convert .dxf files into [QElectroTech](https:/
 
 The goal of this program is to create a fast and accurate conversion tool to be used with [QElectroTech](https://qelectrotech.org/).
 
+## 注意：提前配置好RUST的环境
+配置环境参考：https://www.cnblogs.com/timefiles/p/17930394.html
+
+修改完代码后如何运行：
+
+1.先编译：cargo build --release
+
+2.然后在项目目录下找到：target->release->dxf2elmt.exe，然后按下面"How to Use"的方法测试
+
 ## How to Use
 dxf2elmt requires only one input from the user, the input file.