Merge pull request #289 from Julia-Tempering/contrib

Add contribution guidelines

CONTRIBUTING.md

@@ -0,0 +1,22 @@
+# Contributing Guide
+
+Thank you for your interest in contributing to Pigeons.jl! There are multiple ways to contribute, and we appreciate all contributions.
+
+## Ways to Contribute
+
+### Bug Reports and Feature Requests
+
+If you are working with Pigeons, and run into a bug, or require additional features, we definitely want to know about it. Please let us know by creating a [GitHub Issue](https://github.com/PigeonsAD/Pigeons.jl/issues).
+
+### How to Submit a Pull Request
+
+If you would like to contribute, please feel free to open a pull request. The pull request should:
+
+- Include a small unit test
+- Not contain any unrelated changes
+- Be an isolated change. Independent changes should be submitted as separate pull requests as this makes reviewing easier.
+
+## Code of Conduct
+
+As a Julia Project we expect all participants to abide by the [Julia Community Standards](https://julialang.org/community/standards/).
+