Added CoC and contribution guidelines for cc.github.io repo

Author: kgodey

assets/CODE_OF_CONDUCT.md

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+# Contributor Code of Conduct
+
+The Creative Commons team is committed to fostering a welcoming community. This
+project and all other Creative Commons open source projects are governed by our
+[Code of Conduct][code_of_conduct]. Please report unacceptable behavior to
+[conduct@creativecommons.org](mailto:conduct@creativecommons.org) per our
+[reporting guidelines][reporting_guide].
+
+For a history of updates, see the [page history here][updates].
+
+[code_of_conduct]:https://creativecommons.github.io/community/code-of-conduct/
+[reporting_guide]:https://creativecommons.github.io/community/code-of-conduct/enforcement/
+[updates]:https://github.com/creativecommons/creativecommons.github.io-source/commits/master/content/community/code-of-conduct/contents.lr

assets/CONTRIBUTING.md

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+# Contributing to CC Open Source
+
+Thank you for your interest in contributing to CC Open Source! This document is
+a set of guidelines to help you contribute to this project.
+
+## Code of Conduct
+
+By participating in this project, you are expected to uphold our [Code of
+Conduct][code_of_conduct].
+
+[code_of_conduct]:https://creativecommons.github.io/community/code-of-conduct/
+
+## Project Documentation
+
+The `README` in the root of the repository should contain or link to
+project documentation. If you cannot find the documentation you're
+looking for, please file a GitHub issue with details of what
+you'd like to see documented.
+
+## How to Contribute
+
+Please follow the processes in our general [Contributing Code][contributing]
+guidelines on the Creative Common Open Source website.
+
+[contributing]:https://creativecommons.github.io/contributing-code/
+
+## Questions or Thoughts?
+
+Talk to us on [one of our community forums][community].
+
+[community]:https://creativecommons.github.io/community/