In order to use this effect attach the "GlowOutline" script to the camera then you will have 2 tabs one for changing how the glow looks and one for adding objects you would like to glow.
If you want to add objects via code just get an instance to the GlowOutline script and type GlowOutline.Add(...) which will allow you to add via code (same for remove).
Currently the outlines will render no matter what, through walls or not it will always render. (If anyone knows how to make it rely on depth without any problems please let me know as I could not figure it out without problems.