Merge pull request #1 from github/code-of-conduct

Add code of conduct to contributing guidelines

Author: shana

CONTRIBUTING.md

@@ -5,6 +5,9 @@
 
 Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
 
+This project adheres to the [Open Code of Conduct][code-of-conduct]. By participating, you are expected to uphold this code.
+[code-of-conduct]: http://todogroup.org/opencodeofconduct/#VisualStudio/[email protected]
+
 ## Submitting a pull request
 
 0. [Fork][] and clone the repository.