title: Mask Textfield component in Material-UI
body: <p>I'm trying to apply a mask in a TextField component, but im without success.</p>
  <p>I already tried <a href="https://stackoverflow.com/questions/45758998/how-can-i-mask-my-material-ui-textfield">this solution</a> but not worked. I tried every way but seems to not work anymore.</p>
  <p>I tried to <a href="https://material-ui.com/components/text-fields/#integration-with-3rd-party-input-libraries" rel="nofollow noreferrer">follow the instructions given in docs</a> but they use the Input component and this component is breaking my design.</p>
  <p>Anyone knows a way to mask the TextField component? I'm using material-ui 1.0.0-beta.24</p>