Update .travis.yml

.travis.yml

@@ -11,7 +11,7 @@ services:
 
 before_script:
   - GO_FILES=$(find . -iname '*.go' -type f | grep -v /vendor/)
-  - go get github.com/golang/lint/golint
+  - go get golang.org/x/lint/golint
     
 script:
   - go test -v -race ./...