Import airports and flights data

client/src/App.js

@@ -1,9 +1,13 @@
+import { useState } from 'react';
+
 import './App.css';
 
 function App() {
+    let [content, setContent] = useState("Loading…")
+    fetch('/api/').then(res => res.json()).then(data => setContent(data['message']))
   return (
     <div className="App">
-      Hello world!
+        {content}
     </div>
   );
 }