minor readme change
minor readme change

klamping/webdrivercss,sueddeutsche/webdrivercss,iFixit/webdrivercss,drptbl/nightwatchcss,amitaibu/webdrivercss,amitaibu/webdrivercss,sandersky/webdrivercss,webdriverio/webdrivercss,JustinTulloss/webdrivercss,yoh/nightwatchcss,klamping/webdrivercss,adrianolek/webdrivercss,drptbl/nightwatchcss,adrianolek/webdrivercss,iFixit/webdrivercss,sueddeutsche/webdrivercss,kogai/nightwatchcss,sandersky/webdrivercss,JustinTulloss/webdrivercss,stephencroberts/webdrivercss,webdriverio/webdrivercss,kogai/nightwatchcss,stephencroberts/webdrivercss