VolumeRC's documentation is under development.
Since most of our work is now being integrated into other platforms like X3DOM we recommend you to check those implementations and documentation for a better support.
As you may have seen in our publications, our solution is based on converting a 3D volume texture into a WebGL compatible 2D atlas of the slices. Since we are aware that it's not so obvious on the right way to do get that atlas we have created a piece of Python code to allow you to convert your data easily.
Download the following code (right-click & download):