Update README

Add LICENSE

Author: Leetfs

LICENSE

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+MIT License
+
+Copyright (c) 2024 Lee
+
+Permission is hereby granted, free of charge, to any person obtaining a copy  
+of this software and associated documentation files (the "Software"), to deal  
+in the Software without restriction, including without limitation the rights  
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell  
+copies of the Software, and to permit persons to whom the Software is  
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all  
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE  
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER  
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,  
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE  
+SOFTWARE.

README.md

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-# git-helper
-一键配置git，帮助新手快速上手（开发中）
+# GitHelper
+
+One-click Git setup for username and email.
+
+## Download
+
+Download link: <https://github.com/Leetfs/GitHelper/releases>
+
+### windows
+
+- GitHelper-win32-x64.zip
+- GitHelper-Setup.exe
+- GitHelper-full.nupkg
+
+### linux
+
+- githelper_amd64.deb
+- GitHelper-x86_64.rpm
+
+### macos
+
+- GitHelper-arm64.dmg
+- GitHelper-darwin-arm64.zip
+
+## make
+
+```
+yarn install
+yarn make
+```
+
+## start
+
+```
+yarn install
+yarn start
+```