title: Material-UI side menu?
body: <p>I found the left side menu on the material ui demo page: <a href="http://www.material-ui.com/#/components/app-bar" rel="noreferrer">http://www.material-ui.com/#/components/app-bar</a> quite appealing. However, it doesn't seem to be one of the components that material ui provided. I'm wondering if there's any component library with a side menu like that? Thanks.</p>