add quit : colon, add dns plugin

irc.py

@@ -321,7 +321,7 @@ class IRC(threading.Thread):
         self.pluginManager.event("action", channel, self.config["nickname"], action)
     
     def doQuit(self, message=None):
-        self.sendLine("QUIT " + (message or ""))
+        self.sendLine("QUIT :" + (message or ""))
         self.pluginManager.event("quit", self.config["nickname"], (message or ""))
         self.running = False