add unclosed top/bottom LatheGeometry examples to webgl_geometry_normals.html
reduce ArrowHelper axis check precision and improved formatting per @gero3
expand Frustum.contains() per @alteredq, @gero3
fix formatting per @WestLangley.
move credit for barycoord function from Raycaster to Triangle per @mrdoob.
remove unused variable from Frustum.js
Frustum.contains -> intersectsObject, containsSphere->intersectsSphere, removed Frustum.containsAnyPoints, .transform.  Update unit tests accordingly.
up Color.js test coverage to 78%
WebGLDeferredRenderer: trying to fix AreaLights.

The problem this tries to address is - how to incorporate surface normals into diffuse term area light calculations. The original approach completely ignored surface normals, which resulted in both light shining on backfaces and lit surfaces not showing any shading. This made prettier empty box with very soft look but anything inside the box had completely flat diffuse term.

Not yet fully solved. I tried myriad variants, all methods I could come up with had some problems. This one for example breaks down when the light emitter area intersects object triangle :S.

Also fixed handling of vertex colors for emissive term and tried a bit closer match with shininess strength between area lights and other light types, though this is tricky, seems it would require some non-linear mapping.
WebGLDeferredRenderer: added API for injecting postprocessing effects into deferred rendering pipeline.
Added support for THREE.Lines as bufferGeometry
Removed temporary src line
made the buffer location seperate
Add isIntersectionSphere to sphere

Tets if two spheres intersect
Add unit test, fix is isIntersectionSphere

Add missing space
Fix isIntersectionSphere
Addunit test for isIntersectionSphere
WebGLDeferredRenderer: added tonemapping.

Based on http://filmicgames.com/archives/75
abstracted construction logic of morphTarget to `updateMorphTargets`
Docs: AmbientLight hint as suggested by @WestLangley. Closes #2872.
Merge remote-tracking branch 'Fox32/dev' into dev
Updated builds.