Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -13,6 +13,7 @@ If you want your issue to be resolved quickly, please include in your issue:
 
 ## Contributing
 We want contributing to Gatsby to be fun, enjoyable, and educational for anyone and everyone. Contributions go far beyond pull requests and commits; we are thrilled to receive a variety of other contributions including the following:
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 * Blogging, speaking about, or creating tutorials about one of Gatsby's many features. Mention @gatsbyjs on Twitter and/or email shannon [at] gatsbyjs [dot] com so we can give pointers and tips (if you want them :) and help you spread the word. Please add your blog posts and videos of talks to our [Awesome Gatsby](/docs/awesome-gatsby/) page.
 * Submitting new documentation; titles in _italics_ on gatsbyjs.org are stubs and need contributions
 * Tweeting about things you build with @gatsbyjs (make sure to @ mention us!)