A volumetric light example in Three.js

[thank you Mr.doob et al https://threejs.org/ http://mrdoob.com/]

Inspired by Thibaut Despoulain's example here http://bkcore.com/blog/3d/webgl-three-js-volumetric-light-godrays.html

This example uses Thibaut's custom shaders and utilities

• js/extras/THREE.Extras.Shaders
• js/extras/THREE.Extras.Utils

The effects composer by AlteredQualia [https://github.com/alteredq] translated by Hugh Kennedy [https://github.com/hughsk] https://www.npmjs.com/package/three-effectcomposer

Spherical map created by cesium135 http://cesium135.deviantart.com/art/Space-Spherical-map-346511703