Fix travis environment
Fix travis environment

ari/jobsworth,webstream-io/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,xuewenfei/jobsworth,ari/jobsworth,webstream-io/jobsworth,digitalnatives/jobsworth,digitalnatives/jobsworth,digitalnatives/jobsworth,ari/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,webstream-io/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,ari/jobsworth