Prepare for Upcoming DGEC Transition

CODE_OF_CONDUCT.md

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+Code of Conduct
+===============
+
+All contributions to - and interactions surrounding - this project will abide by
+the [USGS Code of Scientific Conduct][1].
+
+
+
+[1]: https://www.usgs.gov/office-of-science-quality-and-integrity/fundamental-science-practices

CONTRIBUTING.md

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+Contributing
+============
+
+Contributions are welcome from the community. Questions can be asked on the
+[issues page][1]. Before creating a new issue, please take a moment to search
+and make sure a similar issue does not already exist. If one does exist, you
+can comment (most simply even with just a `:+1:`) to show your support for that
+issue.
+
+If you have direct contributions you would like considered for incorporation
+into the project you can [fork this repository][2] and
+[submit a pull request][3] for review.
+
+
+
+[1]: https://github.com/USGS-R/RSPARROW/issues
+[2]: https://help.github.com/articles/fork-a-repo/
+[3]: https://help.github.com/articles/about-pull-requests/