Tile - new constructor, makes a new tile with room initial
added a getter for roominitial. room initial is different from the other
string which is what is drawn on the board PA or # etc.

roomtile changed supercall to match new constructor
Merge branch 'master' of https://Bairdo@github.com/AndLen/222ass1.git

Conflicts:
	222ass1/src/cluedo/moves/Exit.java
	222ass1/src/cluedo/tiles/RoomTile.java