add CONTRIBUTING.md and CODE_OF_CONDUCT.md

CODE_OF_CONDUCT.md

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+# Contributor Code of Conduct
+
+#### Guidelines
+
+* Please be respectful to one another.
+* Many contributors are volunteering their time.  We might not get to your
+issue right away.  Be patient.
+* Other contributors have different backgrounds and perspectives than you do.
+Diversity is a community strength.
+* We will disagree sometimes.  That's ok.  When this happens, assume that the
+person with whom you disagree is a smart person with good reasons for believing
+something different.
+* Everyone has bad days.  If you find yourself about to be mean to someone,
+take a break and cool off.  This project will still be here later.
+* When you make a mistake, apologize.
+
+
+#### We will not tolerate
+
+* Sexualized language or imagery
+* Hate speech
+* Personal attacks
+* Trolling or insulting/derogatory comments
+* Public or private harassment
+* Publishing other's private information
+* Plagiarism
+* Other unethical or unprofessional conduct
+
+#### Enforcement
+
+Project maintainers commit themselves to fairly enforcing this Code of Conduct.
+This means we may:
+
+* Edit or delete harmful comments, code, issues, or other contributions
+* Ban harmful users from the project, temporarily or permanently
+
+This Code of Conduct applies both within project spaces and in public spaces when an
+individual is representing the project or its community.
+
+Instances of unacceptable behavior may be reported privately to the project maintainers.
+
+#### See Also
+
+This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org).

CONTRIBUTING.md

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+### Contributing to this project
+
+We welcome all contributions. Before submitting an issue, please read through currently open issues as well as the [Project Roadmap](ROADMAP.md). Please note this is a work in progress, however we have attempted to document the limitations and caveats in the Roadmap and currently open issues.
+
+We also ask that you be respectful in tone and language, and under no circumstances make inferences based on people's gender, race, nationality, etc. Please take a moment to read our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+### Making Pull Requests
+
+Even better than filing issues is making a Pull Request to fix something! We encourage you to try and fix things yourself and make Pull Requests, and we commit to being responsive and helpful while reviewing. When making a Pull Request, please make it against the `develop` branch in this repository. Where possible, please follow existing coding style practices - the only hard rule being please use spaces and not tabs for indentation, and the YAML files use 2 spaces for indents.
+
+### Community
+
+We are committed to running this as a community project, and highly encourage any involvement. Please reach out if you feel there's anything we can do to make this a more welcoming space for contributions - we really hope to collaborate with you to grow out this project!