Introduction of spatial object references. Everything works with
SpatialObject* as the spatial object reference. Need more testing
for others.
Forgot to add SOR.h.
Getting spatial object references to work for both pointers and non-pointers.
Updated README.md to describe example2.
OutputArray (fromerly called SpatialObjectArray) allocation is now
done internally.
Fixed CMakeLists.txt files so that builds work on machines other than mine.