Add code of conduct to CONTRIBUTING document

[fixes #1967]
thoughtbot · Aug 24, 2015 · 024740b · 024740b
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Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -1,7 +1,12 @@
 Contributing
 ============
 
-We love pull requests. Here's a quick guide:
+We love pull requests from everyone. By participating in this project, you agree
+to abide by the thoughtbot [code of conduct].
+
+[code of conduct]: https://thoughtbot.com/open-source-code-of-conduct
+
+Here's a quick guide for contributing:
 
 1. Fork the repo.