update README

Author: PaulieScanlon

README.md

@@ -1,2 +1,13 @@
-# fauna-gatsby-comments
-Fauna powered comments for a Gatsby blog
+<a href="https://fauna-gatsby-comments.netlify.app/" target="_blank">
+<img src="https://fauna-gatsby-comments.netlify.app/images/comments-app-open-graph-image.jpg" alt="fauna-gatsby-comments main image" />
+</a>
+
+# Roll your own comments with Gatsby and FaunaDB
+
+In this tutorial we'll learn how to write all the [FaunaDB](https://fauna.com/) operations required to drive a [Gatsby](https://www.gatsbyjs.org/) Blog commenting system.
+
+Check out the demo app [here](https://fauna-gatsby-comments.netlify.app/)
+
+If you used **fauna-gatsby-comments** to help build your project i'd love to hear from you: [@pauliescanlon](https://twitter.com/PaulieScanlon)
+
+[![ko-fi](https://www.ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/P5P31B7G8)

gatsby-config.js

@@ -6,7 +6,7 @@ module.exports = {
       "React",
       "Gatsby",
       "FaunaDB",
-      "Netlify Continuous Delivery",
+      "Netlify Continuous Deployment",
       "Netlify Identity Widget",
       "Netlify Serverless functions",
       "Apollo",

src/pages/index.js

@@ -41,7 +41,7 @@ const IndexPage = () => {
         {""} operations required to drive a Gatsby Blog commenting system.
         <Divider />
         This comments app also uses the Netlify Identity Widget, Netlify
-        Continues Deployment, Netlify serverless functions and Apollo/GraphQL
+        Continuous Deployment, Netlify serverless functions and Apollo/GraphQL
       </Text>
       <Divider />
       <Text