remove some bogus include files.

Specifically, the scoring and ann_scoring.h have no business
in this file.
move the demo pole-balancing code to examples

The demo cart-pole balancing demo code, a standard AI example,
should never have been dumed into the main directory in the first
place.  Its all now in the example directory.
Add notes about the ANN demos

Someone needs to cleanup this entire directory.
Merge pull request #180 from linas/moses

Moses - move ANN demo code to the demo directory