Do not test 0.6 node in Travis
Do not test 0.6 node in Travis

HossainKhademian/Stylus,behzad88/stylus,tyv/stylus,Zagorakiss/stylus,a-x-/stylus,modulexcite/stylus,angryrobot/stylus,jameswomack/stylus,rstacruz/stylus,jangarcia/stylus,baotingfang/stylus,ThiagoGarciaAlves/stylus,Ricardh522/stylus,stylus/stylus,trixter5/stylus,SimenB/stylus,jonpacker/stylus,Delapouite/stylus,PeterWangPo/stylus,yetone/stylus,peterkinalex/stylus-1,cemoulto/stylus,galenvagen/stylus,meteor/stylus,silvaemota/stylus,johnnycopperstone/stylus