update mqttd main.c, add mosquitto publisher and subscriber

guowenxue

2019-06-25 02294c1c430ab80bd4543af28f867c5c2927e5c1

 modules/python/sht20.py

old mode 100644
new mode 100755
@@ -1,4 +1,6 @@
#!/usr/bin/python
#-*- coding: utf-8 -*-

import fcntl
import time
import unittest