CONTRIBUTING.md based on Metpy's guide

Author: ocefpaf

CONTRIBUTING.md

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+# Contributors Guide
+
+Are you interested in helping out?
+Have a few minutes to tackle an issue?
+In this guide we will get you setup into contributing to our project!
+
+## Setting up your development environment
+
+We recommend using the [conda](https://conda.io/docs/) package manager for your environments.
+Our recommended setup for contributing is:
+
+1. Install [miniconda](https://docs.conda.io/en/latest/miniconda.html) on your system.
+You may have to restart your prompt for the remaining steps to work.
+
+2. Now, with a local clone, of your fork\* you can create a development environment with:
+
+```shell
+conda create --name MYENV python=3 --file requirements.txt --file requirements-dev.txt
+```
+
+3. The changes should be made via GitHub pull requests\* against ``main``.
+
+
+## More Questions?
+
+If you're stuck somewhere or are interested in being a part of the community in
+other ways, feel free to contact us!
+
+## Further Reading
+
+There are a ton of great resources out there on contributing to open source and on the
+importance of writing tested and maintainable software.
+
+* [How to Contribute to Open Source Guide](https://opensource.guide/how-to-contribute/)
+* [Zen of Scientific Software Maintenance](https://jrleeman.github.io/ScientificSoftwareMaintenance/)
+
+**Working on your first Pull Request?** You can learn how from this video series
+[How to Contribute to an Open Source Project on GitHub](https://egghead.io/courses/how-to-contribute-to-an-open-source-project-on-github),
+Aaron Meurer's [tutorial on the git workflow](https://www.asmeurer.com/git-workflow/), or the
+guide [“How to Contribute to Open Source"](https://opensource.guide/how-to-contribute/).