added newWindow description in readme
added newWindow description in readme

sebastiendavid/webdriverio,rossPatton/webdriverio,monolithed/webdriverio,amitaibu/webdriverio,austek-mdsol/webdriverio,leahciMic/webdriverio,Risto-Stevcev/webdriverio,pazone/webdriverio,udnisap/webdriverio,Pitzcarraldo/webdriverio,mike-suggitt/webdriverio,testingbot/webdriverjs,georgecrawford/webdriverio,georgecrawford/webdriverio,milafrerichs/webdriverio,sebastiendavid/webdriverio,vslinko-forks/webdriverio,stoeffel/webdriverio,saulshanabrook/webdriverio,dandv/webdriverio,silvenon/webdriverio,dandv/webdriverio,Risto-Stevcev/webdriverio,drptbl/webdriverio,mike-suggitt/webdriverio,danielgil/webdriverio,udnisap/webdriverio,eyalzek/webdriverio,christian-bromann/webdriverjs,pazone/webdriverio,Pitzcarraldo/webdriverio,saulshanabrook/webdriverio,cto/webdriverio,wcainboundary/webdriverio,leahciMic/webdriverio,monolithed/webdriverio,stoeffel/webdriverio,gabrielpeery/webdriverio,DenisGorbachev/webdriverjs,richardmcsong/webdriverio,drptbl/webdriverio,matteonovelli/webdriverio,adjohnson916/webdriverio,danielgil/webdriverio,Mimiscita/webdriverio,compulim/webdriverio,lseongjoo/webdriverjs,eyalzek/webdriverio,noodle-learns-programming/webdriverio,Mimiscita/webdriverio,rossPatton/webdriverio,austek-mdsol/webdriverio,angelsanz/webdriverio,lseongjoo/webdriverjs,angelsanz/webdriverio,testingbot/webdriverjs,milafrerichs/webdriverio,wcainboundary/webdriverio,jhoguet/webdriverio,gabrielpeery/webdriverio,compulim/webdriverio,noodle-learns-programming/webdriverio,silvenon/webdriverio,adjohnson916/webdriverio,amitaibu/webdriverio,jhoguet/webdriverio,vslinko-forks/webdriverio,matteonovelli/webdriverio,richardmcsong/webdriverio,cto/webdriverio