For example, https://pwa.tips/codelabs/serviceworker#how-to-register to <img width="1425" alt="screen shot 2016-11-11 at 4 12 17 pm" src="https://cloud.githubusercontent.com/assets/949380/20233910/b4588bd0-a829-11e6-9dd3-5d61d514d25a.png"> Not sure if that would be possible with client-side rendering but would be nice, since this is documentation.