Update README.md

Author: colbyfayock

README.md

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 Optimize and serve all images served in your Netlify site deploy with [Cloudinary](https://cloudinary.com/).
 
+The Cloudinary plugin hooks into your Netlify build process and sets up images to be optimized and delivered by Cloudinary. First, the plugin will replace all of your on-page images post compilation with a Cloudinary-sourced URL giving your initial page load a huge boost by optimizing your media. To provide comprehensive coverage beyond the on-page images, any assets requested directly from your images directory will be redirected to a Cloudinary URL, whether using the Cloudinary fetch (default) or upload delivery type.
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 **This plugin is not officially supported by Cloudinary.**
 
 - [Getting Started](#%EF%B8%8F-getting-started)