check type of tabID in switchTab command - refs #155
check type of tabID in switchTab command - refs #155

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