VRay for Sketchup Make?

Hello,

I am attempting to install the VRay rendering extension on to my current free version of SketchUp Make 2016. Is this possible? Or do I need both a full licence for VRay and a full licence of SketchUp Pro?

I have attempted to follow installation instructions for SketchUp extensions, but the folders that are specified do not exist on my PC and I cannot seem to locate the .rbz file for VRay.

Thanks for your help.