Various changes
Updated README, Changed wall to (- 20000).

I deleted most of the old notes from the readme, updated the input
section, and made a breif description of our efforts of the
evening/night/early morning.

In agent, in (get-block-vlaue), I changed the return for an out of
bounds block to (- 20000), that way it is a negative value.
Well, it actually runs, if nothing else.  Still stupider than spit.
Fixed a stupid issue where the robot was learning to do poorly
We now have access to our weights!  Switch (define print) to #t in grid-main.ss, and it will print the weights being run!
Fixed the blast threshold
Merge branch 'master' into peterTony
Merge pull request #9 from texastony/peterTony

Peter's Amazing debugging work
Merge branch 'master' of
ssh://git@github.com/texastony/grid-predator-prey.git into Tony

Conflicts:
	src/ga-neural-networks.ss