How to give readthedocs access to the pyEXP module

The Sphinx code uses `Doxygen` to extract the C++ API and `automodule` to do the same for `pyEXP`.

The problem is: the Sphinx build on the readthedocs server does not have an installed pyEXP module so that section remains blank.  The only  option I can see is to implement a minimal pyEXP install during the Sphinx build.  This is not currently possible.

Any other thoughts on this?