Google Calendar/third party calendar on apple tv

Does anyone know how to display your google calendar on your apple tv? I have found a third party app called dashbd i have installed it but it will not open. I cannot seem to get hold of developers. Have restarted re installed updated etc etc I am wanting to share our school calendar on the tv in our staff room for all to see. I did not really want to airplay it from another device I wanted to install the app onto the tv dashboard. Any ideas would be so helpful.