add python env && correct some bug

bot.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 # coding: utf-8
 # -*- coding: utf-8 -*-
 
@@ -77,7 +77,7 @@ def main():
         while True:
             try:
                 log.info("Start listening...")
-                mastodon.stream_user(stream, async=False)
+                mastodon.stream_user(stream)
             except Exception as error:
                 log.warning('General exception caught: ' + str(error))
                 time.sleep(0.5)