twitter: don't append colon to nick when replying

just a style thing, nbd

dr_botzo/twitter/ircplugin.py

@@ -171,7 +171,7 @@ class Twitter(Plugin):
         target = replyee_tweet['user']['screen_name']
 
         try:
-            reptweet = "@{0:s}: {1:s}".format(target, tweet)
+            reptweet = "@{0:s} {1:s}".format(target, tweet)
             if self.twit.update_status(status=reptweet, display_coordinates=False, in_reply_to_status_id=status_id) is not None:
                 return self.bot.reply(event, "'{0:s}' tweeted.".format(tweet))
             else: