Create CONTRIBUTING.md

CONTRIBUTING.md

+# Contribution Guidelines
+
+Everything you need to know to contribute to Open Project #1 is included in the [Contribution Guidelines](https://docs.google.com/document/d/1PwBF4yQl69RxvVHZ2m2iiy5pYjd9QO-VcuXWDjB7QwA/edit?usp=sharing)
+
+Please read it before contributing or creating a thread on the forums.