Add Use React 16 With Gatsby as a react til

react/use-react-16-with-gatsby.md

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+# Use React 16 With Gatsby
+
+[Gatsby](https://www.gatsbyjs.org/), the blazing fast static site generator
+for React, is tied to React 15.6. If you've been using React 16+ for a
+while, then this may come as a bit of a buzzkill.
+
+Fortunately, there is a Gatsby plugin that let's you use React 16 with a
+Gatsby v1 site --
+[gatsby-plugin-react-next](https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-react-next).
+
+Add it the plugin as a dependency:
+
+```bash
+$ yarn add gatsby-plugin-react-next
+```
+
+Then add it to the list of plugins in `gatsby-config.js`:
+
+```javascript
+plugins: [`gatsby-plugin-react-next`];
+```
+
+[source](https://twitter.com/gatsbyjs/status/990806495959826432)