Merge pull request #372 from mrunalp/fix_build

Fix the build by getting rid of go get for vet

.travis.yml

@@ -2,13 +2,10 @@ language: go
 go:
   - 1.6
   - 1.5.3
-  - 1.4.3
-  - 1.3.3
 
 sudo: false
 
 before_install:
-  - go get golang.org/x/tools/cmd/vet
   - go version | (grep -q 'go1.[56]' || exit 0 && go get -u github.com/golang/lint/golint )
   - go get github.com/vbatts/git-validation