sending a notification when service worker is updated in top level component

App-example.js

componentWillReceiveProps (nextProps) {
    // see if new content was found by the service worker
    if (nextProps.serviceWorker.serviceWorkerUpdated) {
      this.setState({
        notifications: this.state.notifications.concat({
          'The app has been updated! Hooray! Refresh your browser to enjoy the latest and greatest',
          'some unique key',
          action: 'Dismiss',
          dismissAfter: 4000,
          onClick: this.removeNotification
        })
      })
    }
}

///down in render land
render () {
    return (
      <section className='App'>
        <NotificationStack
          notifications={this.state.notifications}
          onDismiss={this.removeNotification}
        />
      </section>
    )
}