upgrade travis to Go 1.4
upgrade travis to Go 1.4

echa/gearman-go,sgrimee/gearman-go,echa/gearman-go,mikespook/gearman-go,mikespook/gearman-go,tacahilo/gearman-go,sgrimee/gearman-go,mikespook/gearman-go,tacahilo/gearman-go