index.html

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>Basic Firebase Example</title>
</head>

<body>
  <div id="container"></div>

  <script src="https://unpkg.com/react@15/dist/react.min.js"></script>
  <script src="https://unpkg.com/react-dom@15/dist/react-dom.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.min.js"></script>
  <script src="https://bluefishfoundry.firebaseapp.com/__/firebase/4.8.1/firebase-app.js"></script>
  <script src="https://bluefishfoundry.firebaseapp.com/__/firebase/4.8.1/firebase-auth.js"></script>
  <script src="https://bluefishfoundry.firebaseapp.com/__/firebase/4.8.1/firebase-firestore.js"></script>
  <script src="https:/bluefishfoundry.firebaseapp.com/__/firebase/init.js"></script>
  <script type="text/babel" src="index.js"></script>
</body>

</html>