add boilerplate

docs/code-of-conduct.md

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+# Google Open Source Community Guidelines
+
+At Google, we recognize and celebrate the creativity and collaboration of open
+source contributors and the diversity of skills, experiences, cultures, and
+opinions they bring to the projects and communities they participate in.
+
+Every one of Google's open source projects and communities are inclusive
+environments, based on treating all individuals respectfully, regardless of
+gender identity and expression, sexual orientation, disabilities,
+neurodiversity, physical appearance, body size, ethnicity, nationality, race,
+age, religion, or similar personal characteristic.
+
+We value diverse opinions, but we value respectful behavior more.
+
+Respectful behavior includes:
+
+* Being considerate, kind, constructive, and helpful.
+* Not engaging in demeaning, discriminatory, harassing, hateful, sexualized, or
+  physically threatening behavior, speech, and imagery.
+* Not engaging in unwanted physical contact.
+
+Some Google open source projects [may adopt][] an explicit project code of
+conduct, which may have additional detailed expectations for participants. Most
+of those projects will use our [modified Contributor Covenant][].
+
+[may adopt]: https://opensource.google/docs/releasing/preparing/#conduct
+[modified Contributor Covenant]: https://opensource.google/docs/releasing/template/CODE_OF_CONDUCT/
+
+## Resolve peacefully
+
+We do not believe that all conflict is necessarily bad; healthy debate and
+disagreement often yields positive results. However, it is never okay to be
+disrespectful.
+
+If you see someone behaving disrespectfully, you are encouraged to address the
+behavior directly with those involved. Many issues can be resolved quickly and
+easily, and this gives people more control over the outcome of their dispute.
+If you are unable to resolve the matter for any reason, or if the behavior is
+threatening or harassing, report it. We are dedicated to providing an
+environment where participants feel welcome and safe.
+
+## Reporting problems
+
+Some Google open source projects may adopt a project-specific code of conduct.
+In those cases, a Google employee will be identified as the Project Steward,
+who will receive and handle reports of code of conduct violations. In the event
+that a project hasn’t identified a Project Steward, you can report problems by
+emailing opensource@google.com.
+
+We will investigate every complaint, but you may not receive a direct response.
+We will use our discretion in determining when and how to follow up on reported
+incidents, which may range from not taking action to permanent expulsion from
+the project and project-sponsored spaces. We will notify the accused of the
+report and provide them an opportunity to discuss it before any action is
+taken. The identity of the reporter will be omitted from the details of the
+report supplied to the accused. In potentially harmful situations, such as
+ongoing harassment or threats to anyone's safety, we may take action without
+notice.
+
+*This document was adapted from the [IndieWeb Code of Conduct][] and can also
+be found at <https://opensource.google/conduct/>.*
+
+[IndieWeb Code of Conduct]: https://indieweb.org/code-of-conduct

docs/contributing.md

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+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution;
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+
+## Community Guidelines
+
+This project follows [Google's Open Source Community
+Guidelines](https://opensource.google/conduct/).