message: Added this for typescript typing
  The props in constructor isn't picking up the type?
diff: @@ -6,7 +6,7 @@ class NavigationHandler extends React.Component<{ stateNavigator: StateNavigator
  private navigateHandler: any;
  constructor(props) {
  super(props);
  - var { stateNavigator } = props;
  + var { stateNavigator } = this.props;
  this.navigateHandler = () => this.forceUpdate();
  stateNavigator.onNavigate(this.navigateHandler);
  stateNavigator.historyManager.init = () => {};
  