have bot respond to role mentions too

markov-bot.py

@@ -33,7 +33,10 @@ class MyClient(discord.Client):
         print('logged in as {0.user}'.format(self), file=sys.stderr)
 
     async def on_message(self, message):
-        if message.author == self.user or self.user not in message.mentions:
+        if message.author == self.user:
+            return
+
+        if self.user not in message.mentions and self.user not in [m for m in role.members for role in message.role_mentions]:
             return
 
         await message.channel.send(gen_sentence())