bugfix, misc cleanup

* change 'steve' to 'steven' in hand list
* detect Ace-bottomed straights
* add Casey to player list

score.rb

@@ -34,6 +34,7 @@ PlayerNames = {
 	'aaron'     => 'Aaron Dickinson',
 	'adam'      => 'Adam Dickinson',
 	'angel'     => 'Angel Madigan',
+	'casey'     => 'Casey Lowe',
 	'cathy'     => 'Cathy Waits',
 	'dundee'    => 'Dundee Reyno',
 	'eddy'      => 'Eddy Cramm',