message: Validate phone number on login
  To prevent confusion when accidently inputting mxid or email. Fixes
diff: @@ -23,6 +23,9 @@ import url from 'url';
  import sdk from '../../../index';
  import Login from '../../../Login';
  +// For validating phone numbers without country codes
  +const PHONE_NUMBER_REGEX = /^[0-9\(\)\-\s]*$/;
  +
  /**
  * A wire component which glues together login UI components and Login logic
  */
  @@ -125,7 +128,16 @@ module.exports = React.createClass({
  },
  onPhoneNumberChanged: function(phoneNumber) {
  - this.setState({ phoneNumber: phoneNumber });
  + // Validate the phone number entered
  + if (!PHONE_NUMBER_REGEX.test(phoneNumber)) {
  + this.setState({ errorText: 'The phone number entered looks invalid' });
  + return;
  + }
  +
  + this.setState({
  + phoneNumber: phoneNumber,
  + errorText: null,
  + });
  },
  onServerConfigChange: function(config) {
  