example unit not consistent with ovr settings

[micuat]

I noticed the example doesn't appear to be stereo, and this is probably due to the units. SetIPD(float)'s default value or the default disparity is 0.064 meters but the example's spheres are placed in the range of -500 - 500 meters, which is too far to see as stereo.

It may be nice to have initialization function to set disparity or at least state it in the readme.