travis: update go versions
travis: update go versions

nsqio/nsq,rpau/nsq,sparklxb/nsq,bitly/nsq,mreiferson/nsq,sparklxb/nsq,ploxiln/nsq,rpau/nsq,sparklxb/nsq,nsqio/nsq,rpau/nsq,bitly/nsq,bitly/nsq,ploxiln/nsq,bitly/nsq,jehiah/nsq,sparklxb/nsq,ploxiln/nsq,ploxiln/nsq,nsqio/nsq,ploxiln/nsq,jehiah/nsq,jehiah/nsq,jehiah/nsq,nsqio/nsq,mreiferson/nsq,mreiferson/nsq,rpau/nsq,sparklxb/nsq,bitly/nsq,mreiferson/nsq,nsqio/nsq,jehiah/nsq,mreiferson/nsq,rpau/nsq