new function added which convert string to direction

src/killer_sokoban/Direction.java

@@ -30,6 +30,16 @@ public enum Direction {
 		default : return DOWN;
 		}
 	}
+	public static Direction fromString(String dir)
+	{
+		switch (dir)
+		{
+		case "left" : return LEFT;
+		case "up" : return UP;
+		case "right" : return RIGHT;
+		default : return DOWN;
+		}
+	}
 	public  Direction opposite()
 	{
 		switch (this)