message: makeRegistrationUrl is required
diff: @@ -38,7 +38,7 @@ module.exports = React.createClass({
  onLoggedIn: React.PropTypes.func.isRequired,
  clientSecret: React.PropTypes.string,
  sessionId: React.PropTypes.string,
  - makeRegistrationUrl: React.PropTypes.func,
  + makeRegistrationUrl: React.PropTypes.func.isRequired,
  idSid: React.PropTypes.string,
  customHsUrl: React.PropTypes.string,
  customIsUrl: React.PropTypes.string,
  