Kevin Y. Suwito

Used the original fork from `http://kripken.github.io/ammo.js/builds/ammo.wasm.js` but it introduces error like this:  It seems there are some differences with the one forked by Mozilla team.

> I think you should be able to use https://cdn.jsdelivr.net/gh/MozillaReality/ammo.js@8bbc0ea/builds/ammo.wasm.js also see [c-frame#16](https://github.com/c-frame/aframe-physics-system/issues/16) for context where this url is coming from. Thank you for pointing out the exact build! Probably...