Move some docs to docs dir (declutter the top).

CONTRIBUTING.md

@@ -1,36 +0,0 @@
-# Contributing guidelines
-
-[Contributor License Agreement]: https://git.k8s.io/community/CLA.md
-[github workflow guide]: https://github.com/kubernetes/community/blob/master/contributors/guide/github-workflow.md
-[CNCF code of conduct]: https://github.com/cncf/foundation/blob/master/code-of-conduct.md
-
-## Contributing a Patch
-
-1. Kubernetes projects require contributors to sign the
-   [Contributor License Agreement] before pull requests
-   can be considered.
-1. Submit an issue describing your proposed change to
-   the repo in question.
-1. The [repo owners](OWNERS) will respond to your issue
-   promptly.
-1. Fork the repo, develop and test your code.
-   See the [github workflow guide].
-1. For _new features_, provide a markdown-based demo following
-   the pattern established in the [examples](examples) directory.
-   Run `bin/pre-commit.sh` to test your demo.
-1. Submit a pull request.
-
-## Community, discussion, contribution, and support
-
-Learn how to engage with the Kubernetes community on
-the [community page](http://kubernetes.io/community/).
-
-You can reach the maintainers of this project at:
-
-- [Slack](http://slack.k8s.io/)
-- [Mailing List](https://groups.google.com/forum/#!forum/kubernetes-kustomize)
-
-## Code of conduct
-
-Participation in the Kubernetes community is governed
-by the [CNCF code of conduct].