message: chore: add placeholder to firebase example
diff: </li>
  </ul>
  <form id="form" v-on:submit.prevent="addUser">
  - <input v-model="newUser.name">
  - <input v-model="newUser.email">
  + <input v-model="newUser.name" placeholder="Add Name">
  + <input v-model="newUser.email" placeholder="Add Email">
  <input type="submit" value="Add User">
  </form>
  <ul class="errors">
  