Fix travis config. YAML forbids tabs.
Fix travis config. YAML forbids tabs.

mlitwiniuk/flot,soenter/flot,chiu/flot,trask/flot,fashionsun/flot,k-joseph/flot,soenter/flot,saike/flot,cipix2000/flot,octavianCraciun/engineering-flot,colinhunt/flot,saike/flot,petrvacha/flot,andig/flot,klarkc/flot,resnick1223/flot,stanislavdavid/flot,saike/flot,magora-suchkov/flot,chiu/flot,chaveiro/flot,k-joseph/flot,matong/flot,resnick1223/flot,chiu/flot,andig/flot,TrainingPeaks/flot,ni-kismet/engineering-flot,andig/flot,sedran/flot,mlitwiniuk/flot,lolifans/flot,stanislavdavid/flot,k-joseph/flot,resnick1223/flot,chaveiro/flot,cipix2000/engineering-flot,gdseller/flot,cipix2000/flot,chaveiro/flot,MAMISHO/flot,mcanthony/flot,stanislavdavid/flot,mlitwiniuk/flot,kongx73/flot,flot/flot,Sensirion/flot,pepperdata/flot