Errors when running duckhtml.html on mobile.

[caseyyee]

when running: duckhunt.html on a google Pixel using Chrome, I get:

aframe.0.3.0.min.js:6 core:schema:warn Unknown property `0` for component/system `material`. +114ms
aframe.0.3.0.min.js:6 core:schema:warn Unknown property `1` for component/system `material`. +14ms
aframe.0.3.0.min.js:6 core:schema:warn Unknown property `2` for component/system `material`. +13ms
aframe.0.3.0.min.js:6 core:schema:warn Unknown property `3` for component/system `material`. +15ms
aframe.0.3.0.min.js:6 core:schema:warn Unknown property `4` for component/system `material`. +14ms
aframe.0.3.0.min.js:6 core:schema:warn Unknown property `5` for component/system `material`. +13ms
aframe.0.3.0.min.js:6 core:schema:warn Unknown property `6` for component/system `material`. +8ms

window displays just a white screen with the enter VR button.