Added documentation for rendering of points as spheres.
Added documentation for rendering of points as spheres.


lento/cortex,hradec/cortex,davidsminor/cortex,danieldresser/cortex,appleseedhq/cortex,danieldresser/cortex,danieldresser/cortex,lento/cortex,danieldresser/cortex,davidsminor/cortex,appleseedhq/cortex,goddardl/cortex,appleseedhq/cortex,davidsminor/cortex,hradec/cortex,goddardl/cortex,goddardl/cortex,hradec/cortex,lento/cortex,davidsminor/cortex