always pass in width, hight and viewMatrix, projectionMatrix, optionally lightDir
added helper methods computeViewMatrix, computeViewMatrixFromYawPitchRoll, computeProjectionMatrix, computeProjectionMatrixFOV
see Bullet/examples/pybullet/testrender.py + testrender_np.py for example use
add missing base_link.stl for husky.urdf
(for now, start the example browser in 'physics server',
then compile using premake --python option,
then run python in the bin folder (so it finds pybullet.so)
and run the test.py script in examples/pybullet folder.
The robotics shared memory C API is very suitable for this.