update contributing

CONTRIBUTING.md

@@ -1,9 +1,14 @@
 # Contributing Guidelines
 
-The author(s) of this repository appreciate external feedback and contributions.
-To improve this feedback process, we urge you to read and adhere to the
-following guidelines:
+Please
 
-- **Provide clear, evidenced arguments for your changes, where possible** this will aid future onlookers in understanding why certain features came to be the way they are. Additionally, this facilitates the author(s) in learning why and how they've erred. Finally, taking the time to make your arguments clearer can prevent the creation of feedback that is misguided, incorrect, or inadequate relative to other possible changes.
+* Aim to make statements both clear and useful.
+* Adhere to GitHub's community guidelines.
 
-[additional guidelines pending]
+[GitHub Community Guidelines](https://github.com/github/docs/blob/main/content/site-policy/github-terms/github-community-guidelines.md):
+
+> The primary purpose of the GitHub community is to collaborate on software projects. We are committed to maintaining a community where users are free to express themselves and challenge one another's ideas, both technical and otherwise. At the same time, it's important that users remain respectful and allow space for others to contribute openly. In order to foster both a safe and productive environment, we encourage our community members to look to these guidelines to inform how they interact on our platform. Below, you’ll find some suggestions for how to have successful interactions as a valued member of the GitHub community.
+>
+> * __Be welcoming and open-minded__ - New users join our community each day. Some are well-established developers, while others are just beginning. Be open to other ideas and experience levels. Make room for opinions other than your own and be welcoming to new collaborators and those just getting started.
+* __Be respectful__ - Working in a collaborative environment means disagreements may happen. But remember to criticize ideas, not people. Share thoughtful, constructive criticism and be courteous to those you interact with. If you’re unable to engage respectfully, consider taking a step back or using some of our moderation tools to deescalate a tense situation.
+* __Be empathetic__ - GitHub is a global community with people from a wide variety of backgrounds and perspectives, many of which may not be your own. Try to put yourself in others’ shoes and understand their feelings before you address them. Do your best to help make GitHub a community where others feel safe to make contributions, participate in discussions, and share different ideas.