More Progress

Added pencil mark functionality today, and the generator will pass a puzzle of whatever difficulty it generates to the activity.  The problem with the generator at this point is if we ask it for a puzzle of a certain difficulty, we have to put it in a loop until it gives us one with that difficulty, and what it does is it keeps generating and then coming back with "unknown" difficulty and continuously regenerates.  We decided to look at it and see if it was generating anything useful at all, and it was, so we put it out to the puzzle screen.  We will be doing some more reading on the generator and its difficulty ratings.  Other things we are looking at next are to gray out buttons when the digit count on the puzzle board reaches 9 and begin looking into the timer functionality.