Merge pull request #3 from Corm/master

added fullscreen
Merge pull request #4 from Corm/master

added health
Moved quadtree update into main game loop
Merge branch 'master' of https://github.com/jpinsonault/neural_networks
updated gitignore
Merge pull request #5 from Corm/master

added food eating mechanic
Food adds health, camera unfollows dead creatures

+ Food now adds a specific amount of health to a creature when eaten.

+ Camera unfollows a creature if it dies while selected

* Changed the event handler on the creates to accept functions with
*   parameters
Creatures breed now. Removed unneeded file

+ Creatures breed now using the new Breeder class
  It takes the list of creatures and pits a few random ones against
  eachother to see who has the most health. Also mutates the new genes
  randomly

- Removed the Toggler class since it's not being used
Camera bug fixes. Speed affects health loss now.

* Fixed some bugs with the camera related to following dead creatures.

* The game speed now affects the health loss as a creature moves so that
* they lose twice as much health and move twice as fast if the speed is 2x

* When a selected creature dies it not longer lists the dead creature's
* stats on screen
Quick Fix. Removed debug statement
Health and food are fed in as inputs