Update README.md

Author: JeffreySu

README.md

@@ -9,6 +9,23 @@ You can use this tool to modify project file information or manage version infor
 
  <img src="./images/how-to-use/how-to-use.gif" />
 
+## Use .exe Application Directly
+
+1. Open [Release Page](https://github.com/Senparc/ProjectFileManager/releases), download the program package from Assets, such as: `Senparc.ProjectFileManager_0.1.0.zip`.
+
+2. Unzip the file and execute `Senparc.ProjectFileManager.exe` file.
+
+## Use Source Code
+
+All the source code is in the [/src](/src) floder, you can modify the code and compile the program by yourself. This is also a project where you can learn the .NET Core and WPF program code.
+
+Use Visual Studio or Visual Studio Code to open the `Senparc.ProjectFileManager.sln` file.
+
+The project is based on .NET Core 3.1 + WPF, so you need to install [.NET Core 3.1 SDK](https://dotnet.microsoft.com/download/dotnet-core/thank-you/sdk-3.1.101-windows-x64-installer) (or higher) before compile the program.
+
+You are welcome to contribute your own code.
+
+
 ## License
 
 Apache License Version 2.0