Fix linting import (#321)

Apparantly the repo has moved

Author: sharpner

.travis.yml

@@ -10,7 +10,7 @@ sudo: false
 install:
   - go get -t -d -v ./...
   - go get github.com/onsi/ginkgo/ginkgo
-  - go get -u github.com/golang/lint/golint
+  - go get -u golang.org/x/lint/golint
   - go get -u github.com/modocache/gover
   - go get -u github.com/mattn/goveralls
     # optional dependencies