Update README.md

README.md

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 # Xiaomi10-logo-editor
 This is a command tool to generate a new logo.img for Xiaomi 10 device.You can use this tool to make your own startup logos.
+
+## How to use
+1. Download Release
+2. Edit those bmp files, but don't change resolution and file header. I recommand using PhotoShop to edit it.
+3. Open a cmd or powershell window and change path to where the exe file are.
+4. [Usage] LOGOIMGEditor.exe [old_img_file] [new_img_file] [normal_bmp] [fastboot_bmp] [unlocked_bmp] [destroyed_bmp]
+
+## Compile
+0. Download and install the latest version Visual Studio 2019.
+1. Clone this repository ```git clone https://github.com/UnknownObject000/Xiaomi10-logo-editor.git```
+2. Open ```LOGOIMGEditor.sln``` with Visual Studio 2019