Update README with new help info
Update README with new help info

sebastian-code/speedtest-cli,Oftatkofta/speedtest-cli,sivel/speedtest-cli,sbausis/speedtest-cli,nfedera/sivel-speedtest-cli,JaredBBowden/speedtest-cli,poserlin/speedtest,felixbello/speedtest-cli,PeterDaveHello/speedtest-cli,iCasa/speedtest-cli