Created test, added test instance variables.
Modified to reflect renaming of AVLTree and AVLNode to RBTree and RBNode.
Modified to reflect renaming of AVLTree and AVLNode to RBTree and RBNode. Fixed getToVertices methods to return the proper type of queue.
Completely changed the Tree and Node from AVL implementation to Red-Black. Renamed them as such. Began implementing post-insertion adjustment rules. Stripped many methods from Node class to lessen recursive load.