Updating metadata descriptions (#214)

Co-authored-by: Allison Ryan <77211884+allisonryan0002@users.noreply.github.com>
Co-authored-by: Rui Miguel Alonso <ruiskas@gmail.com>

web/index.html

@@ -19,18 +19,18 @@
 
   <meta charset="UTF-8">
   <meta content="IE=Edge" http-equiv="X-UA-Compatible">
-  <meta name="description" content="A Very Good new Flutter project.">
+  <meta name="description" content="Come play Pinball with your favorite Google Developer Mascots! Built with Flutter & Firebase for Google I/O 2022.">
 
   <!-- iOS meta tags & icons -->
   <meta name="apple-mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-status-bar-style" content="black">
-  <meta name="apple-mobile-web-app-title" content="Pinball">
+  <meta name="apple-mobile-web-app-title" content="I/O Pinball Machine - Flutter">
   <link rel="apple-touch-icon" href="icons/Icon-192.png">
 
   <!-- Favicon -->
   <link rel="icon" type="image/png" href="favicon.png" />
 
-  <title>Pinball</title>
+  <title>I/O Pinball Machine - Flutter</title>
   <link rel="manifest" href="manifest.json">
   <script src="/__/firebase/8.9.1/firebase-app.js"></script>
   <script src="/__/firebase/8.9.1/firebase-firestore.js"></script>