Update README.md

Author: git-user-cpp

README.md

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 # aht20_driver_stm32f446ret
 driver for AHT20 temperature and humidity sensor
+
+---
+
+![GitHub Release](https://img.shields.io/github/v/release/git-user-cpp/aht20_driver_stm32f446ret?style=flat-square&logo=github)
+![GitHub Repo stars](https://img.shields.io/github/stars/git-user-cpp/aht20_driver_stm32f446ret?style=flat-square&logo=github)
+
+![GitHub contributors](https://img.shields.io/github/contributors-anon/git-user-cpp/aht20_driver_stm32f446ret?style=flat-square&logo=github) ![GitHub last commit](https://img.shields.io/github/last-commit/git-user-cpp/aht20_driver_stm32f446ret?style=flat-square&logo=github)
+
+![GitHub License](https://img.shields.io/github/license/git-user-cpp/aht20_driver_stm32f446ret?style=flat-square&logo=github)
+
+---
+
+## ⚠️ LICENSE ⚠️
+
+    aht20_driver_stm32f446ret
+    driver for AHT20 temperature and humidity sensor
+    Copyright (C) 2025  Andrew Kushyk
+   
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+   
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+   
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+---