add link to javadocs in readme file
add link to javadocs in readme file

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