Still no resolution.
Question: what happens in ICP if two clouds have only 30 percent overlap, but the overlapped regions
are pretty well aligned? What happens to the points  in one cloud with no correspondance in the other?
I do not know why this merge is necesarry

Merge branch 'master' of https://github.com/btj10/DIS_Kinect
I added code to estimate the average number of neighbors in a cloud as a function of radius to help
automate proper parameter selection.