Further fixes -

- All test files have been renamed to their respective <package>_test name,
    this is done in accordance with
      - https://github.com/golang/go/wiki/CodeReviewComments#import-dot
        imports are largely used in testing, but to avoid namespace collision
        and circular dependencies

  - Never use _* in package names other than "_test" change fragment_v1 to expose
    fragment just like 'gopkg.in/check.v1'

CONTRIBUTING.md

@@ -55,7 +55,11 @@ Building Libraries
 * When you're ready to create a pull request, be sure to:
     - Have test cases for the new code. If you have questions about how to do it, please ask in your pull request.
     - Run `go fmt
-    - Run `golint` (`go get github.com/golang/lint/golint`)
+    - Run `golint`
+        ```
+	$ go get github.com/golang/lint/golint
+	$ golint ./...
+	```
     - Squash your commits into a single commit. `git rebase -i`. It's okay to force update your pull request.
     - Make sure `go test -race ./...` and `go build` completes.
 * Read [Effective Go](https://github.com/golang/go/wiki/CodeReviewComments) article from Golang project