Update app.py

app.py

@@ -111,6 +111,11 @@ async def on_ready():
         presence.start()
 
 
+@client.event
+async def on_guild_join(guild):
+    await guild.system_channel.send("Hi! I'm Lyre! Use the `--help` command for instructions on setup!")
+
+
 @tasks.loop(seconds=60)
 async def presence():
     if not clone: