message: Added missing props param
diff: @@ -14,7 +14,7 @@ class Scene extends React.Component {
  var {state, crumbs} = navigationEvent.stateNavigator.stateContext;
  return (state && crumbs.length === crumb) ? {navigationEvent} : null;
  }
  - shouldComponentUpdate() {
  + shouldComponentUpdate(props) {
  var {crumb, navigationEvent} = props;
  var {state, crumbs} = navigationEvent.stateNavigator.stateContext;
  return state && crumbs.length === crumb;
  