Link demo React UI to Github repo

react-ui/src/App.css

@@ -18,6 +18,10 @@
   font-size: large;
 }
 
+.App a {
+  color: #f60;
+}
+
 @keyframes App-logo-spin {
   from { transform: rotate(0deg); }
   to { transform: rotate(360deg); }

react-ui/src/App.js

@@ -40,6 +40,12 @@ class App extends Component {
           <img src={logo} className="App-logo" alt="logo" />
           <h2>Welcome to React</h2>
         </div>
+        <p className="App-intro">
+          {'This is '}
+          <a href="https://github.com/mars/heroku-cra-node">
+            {'create-react-app with a custom Node/Express server'}
+          </a><br/>
+        </p>
         <p className="App-intro">
           {this.state.fetching
             ? 'Fetching message from API'