Update README.md

Author: TimerOverflow

README.md

@@ -4,6 +4,7 @@ embedded EEPROM manage library
 - managing AVR internal EEPROM memory.
 - automatically allocate data cluster.
 - improved memory endurance. ( data overwrite protection )
+- support Hardware Abstraction Layer (HAL) for various cpu.
 
 # Build & Tested Environment
 - IAR C/C++ Compiler for AVR 6.11.1 (6.11.1.50453)