.travis.yml: update the cmd/vet and cmd/cover discovery URL. Add go 1.4
.travis.yml: update the cmd/vet and cmd/cover discovery URL. Add go 1.4

dgonyeo/spec,krnowak/appc-spec,tklauser/spec,tklauser/spec,stufflebear/spec,dustymabe/spec,craimbert/spec,iaguis/appc-spec,jonboulle/spec,3ofcoins/appc-spec,iaguis/appc-spec,apcera/appc-spec,dgonyeo/spec,dustymabe/spec,iaguis/appc-spec,zenlinTechnofreak/spec,endocode/appc-spec,endocode/appc-spec,appc/spec,apcera/appc-spec,alban/appc-spec,jonboulle/spec,alban/appc-spec,squeed/spec,endocode/appc-spec,appc/spec,tklauser/spec,squeed/spec,alban/appc-spec,ChengTiesheng/spec,craimbert/spec,jonboulle/spec,stufflebear/spec,marineam/spec,3ofcoins/appc-spec,appc/spec,krnowak/appc-spec,apcera/appc-spec,dustymabe/spec,squeed/spec,zenlinTechnofreak/spec,stufflebear/spec,dgonyeo/spec,3ofcoins/appc-spec,zenlinTechnofreak/spec,craimbert/spec,krnowak/appc-spec,ChengTiesheng/spec,ChengTiesheng/spec,marineam/spec,marineam/spec