WebXR Playground

https://immersive-web.github.io/webxr-samples/proposals/phone-ar.html

https://threejs.org/examples/#webvr_cubes

http://peted.azurewebsites.net/webvr-hololens/

https://rawgit.com/mrdoob/three.js/dev/examples/webvr_ballshooter.html