Switch to Go 1.4 for travis-ci
Switch to Go 1.4 for travis-ci

zenoss/go-zookeeper,ChannelMeter/go-zookeeper,mikeqian/go-zookeeper,helight/helight_code,wickman/go-zookeeper,dallasmarlow/go-zookeeper,helight/helight_code,helight/helight_code,lightpaw/go-zookeeper,helight/helight_code,helight/helight_code,helight/helight_code,aybabtme/go-zookeeper,cch123/go-zookeeper,theckman/go-zookeeper,helight/helight_code,helight/helight_code,helight/helight_code,kmiku7/go-zookeeper-annotated,rajivreddy/go-zookeeper