Update bots option

app.py

@@ -21,7 +21,7 @@ def middchat(bot_cache: BotCache, message: str, history: List[Tuple[str, str]])
     """
     # get the bot options
     # for new chats, fetch new bots
-    if len(history) == 0:
+    if message == "update bots":
         all_bots = bot_cache.update()
     else:
         all_bots = bot_cache.bots
@@ -68,7 +68,7 @@ def middchat(bot_cache: BotCache, message: str, history: List[Tuple[str, str]])
 
 cache = BotCache()
 chat_partial = partial(middchat, cache)
-initial_msg = "Welcome to MiddChat!\n" + chat_partial("", []) + "\nPlease note that if you want to reset your chat, you should refresh this page!"
+initial_msg = "Welcome to MiddChat!\n" + chat_partial("", []) + "\n\nPlease note that if you want to reset your chat, you should refresh this page!\nIf you want to update the bot list, type \"update bots\""
 chatbot = gr.Chatbot([(initial_msg, None)])
 demo = gr.ChatInterface(
     fn=chat_partial,