isOnBoard: 35  points total

	how to grade:  First go in BogglePlayer and change the customized  
board to contain a dice  "Qu" and other dice of > 1 letter.
	For example, you can have a board that looks like this:
	
	a  b  c  d
	e  f   g  h
	qu 1 2 3
	ab  p  q  xyz

       Then go  in BoggleGUI.java,  in checkAndAddWordHuman   and  
comment out the line that checks if its in lexicon:
	
	if(!computerPlayer.isInLexicon(wordToCheck))          {
      		chideUser(wordToCheck, "Not In Lexicon");
      		return;
    	}
	Now you should be able to check random combinations of letters  at  
leisure  without  seeing the "Not in lexicon message".

	Try a systematic sample of words that should be on board: 	abcd,  
abcdh, abcdh3, af23, and so on.
	
	Then try words including Qu:   qu123, qufgh, quea, etc

	Then try words including a different dice of 2 letters (in this case  
"ab"):  ab123

	Then try words including dice of 3 letters "xyz":  xyzqp

	Then try some words that should not be on the board.


	How to divide the points:  handling 1-letter dice:   that's 23 points
			if this does not work correctly, subtract based on gravity of error.
	If it handles Qu:  7 points
	If it handles dice of arbitrary length:     5 points





getAllValidWords: 35 points total

	Same as above,  set a custom board, pick one that has some good words  
that you can see.
	
	here is what I would do: I would write a test method that gets  all  
the valid words in a different way, so that you know what the answer  
is.   then check that they get all words with their method.

	the test method:  in your own copy of the BogglePlayer,  fill in  
getAllValidWords as follows:

	Vector<String> getAllValidWords() {

		Iterator i =  lexicon.iterator();
		Vector<String> result = new Vector(); 	

		while (i.hasNext()) {

			String word = (String) i.next();
			//if the word is on board add it
			 if ((word.length() >= minWordLength) && (isOnBoard(word))
					result.add(word);
			}
		}
		return result;
	}	

	After you run this version,  you'll know  what  the right answer is.   
Chose a board with at least  30 words.
	Give points depending of what percentage of the total number of words  
they got.



General style:   30 points
	
	how complicated the code is
	how readable the code is