Add travis status image
Add travis status image

hokaccha/nodebrew,yosuke-furukawa/nodebrew,1000ch/nodebrew,hokaccha/nodebrew,aycabta/nodebrew,yosuke-furukawa/nodebrew,aycabta/nodebrew,yosuke-furukawa/nodebrew,hokaccha/nodebrew,1000ch/nodebrew