refactors board and main so that board takes in a list of behavior
scripts.
Merge branch 'zacDev'

Conflicts:
	board.py
made scripts an object
stashing changes in progress.
Merge branch 'master' into ehs-dev
Adds Health counter to robot class and constructor.
Updates the update method to remove destroyed robots from play.
Adds functionality for the game to end when only one robot is left.
Adds Actor class to handle the basic position functionality.
Adds actor class
Finishes refactoring adding in Actors.