Adding a Main Driver

Push a main driver to create a Q-Learning Algorithm for Sokoban2.
Sokoban State Parser

Creating a State Parser for Sokoban. Borrowing the Same format used in
Four Rooms State Parser
Updated Sokoban 2 Code

Add new Sokoban 2 Code as well as a new parser
Updated Backend

Had to update the Backend Classes to get the Domain and the visualizer
working
Merge pull request #7 from MAPLE-Robot-Subgoaling/tembot

Tembot