fix Dice plugin init

dice/ircplugin.py

@@ -14,11 +14,12 @@ logger = logging.getLogger(__name__)
 class Dice(Plugin):
     """Roll simple or complex dice strings."""
 
-    def __init__(self):
+    def __init__(self, bot, connection, event):
         """Set up the plugin."""
-        super(Dice, self).__init__()
         self.roller = DiceRoller()
 
+        super(Dice, self).__init__(bot, connection, event)
+
     def start(self):
         """Set up the handlers."""
         self.connection.reactor.add_global_regex_handler(['pubmsg', 'privmsg'], r'^!roll\s+(.*)$',