Material-ui: material icons missing "(no) meeting room" icon

[sundaycrafts]

The latest Material icons has (no) meeting_room icon. but I couldn't find these.

• [x] This is a v1.x issue.
• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

Below code should display the door icons.

import React from 'react'
import { MeetingRoom, NoMeetingRoom } from '@material-ui/icons'

export default () => (
  <div>
    <MeetingRoom />
    <NoMeetingRoom />
  </div>

Current Behavior

It shows nothing.

Steps to Reproduce

1. npm i @material-ui/icons @material-ui/core
2. Try to use it.

Context

Your Environment

| Tech | Version |
|--------------|---------|
| Material-UI | v1.3.1 |
| React | v16.4.1 |
| browser | all browser |
| @material-ui/icons | v1.1.0 |

[mbrookes]

You need to use v2.0.0-beta.1 for the v2 icons.