Refactored the name for HelloAssignment.java to AgentAssignmentStart.java.
Commented out an optional reader for our grid in the SimulationCanvas file.
Updated the GridWorld to receive a file of states that containing obstacles, this is used to construct the grid.
added the obstacle.txt file (the AgentAssignmentStart file will generate this everytime the code is run).

Signed-off-by: DGriffen <david.griffen@knights.ucf.edu>