Update README.md

Author: imliubo

README.md

@@ -1,3 +1,13 @@
+# 🚫 Deprecated — Use M5GFX & M5Unified
+
+- **M5GFX**  
+  High-performance, lightweight graphics and display driver library for M5 devices.  
+  <https://github.com/m5stack/M5GFX>
+
+- **M5Unified**  
+  Unified base library for M5 devices (IO/peripherals, power management, audio, etc.).  
+  <https://github.com/m5stack/M5Unified>
+
 # AtomS3 Library
 
 [![Arduino Compile](https://github.com/m5stack/M5AtomS3/actions/workflows/arduino-action-compile.yml/badge.svg)](https://github.com/m5stack/M5AtomS3/actions/workflows/arduino-action-compile.yml)
@@ -36,4 +46,4 @@ English | [中文](README_cn.md)
 
 ## More Information
 
-**Arduino IDE Development**: [Click Here](https://docs.m5stack.com/en/quick_start/atoms3/arduino)
+**Arduino IDE Development**: [Click Here](https://docs.m5stack.com/en/quick_start/atoms3/arduino)