Don't exit when there are no connected servers

closes #175

src/IRCBot.py

@@ -276,11 +276,6 @@ class Bot(object):
 
     def _event_loop(self):
         while self.running or not self._event_queue.empty():
-            if not self.servers and self._event_queue.empty():
-                self._kill()
-                self.log.warn("No servers, exiting")
-                break
-
             try:
                 item = self._event_queue.get(block=True,
                     timeout=self.get_poll_timeout())