add docs per @WestLangley's request: https://github.com/mrdoob/three.js/pull/5788#issuecomment-67857995

added minor improvement to docs. Also, the name of the Frustum's method should reflect the explanation and be changed to intersectsObjectBoundingSphere(...)

resolves mrdoob/three.js#4848

As far as I'm aware this is no longer needed.

Essentially a shorthand for new THREE.Color().setRGB( r, g, b );

Update mat4 docs to indicate value orientation

Update mat3 docs to clarify value orientation

created euler angle docs, updated vector 3 equals to specify that it returned a boolean and not a vector 2