add features in readme file
add features in readme file

RishiGupta12/serial-communication-manager,akuhtz/serial-communication-manager,RishiGupta12/SerialPundit,RishiGupta12/serial-communication-manager,RishiGupta12/SerialPundit,RishiGupta12/serial-communication-manager,akuhtz/serial-communication-manager,RishiGupta12/SerialPundit,akuhtz/serial-communication-manager,akuhtz/serial-communication-manager,RishiGupta12/SerialPundit