update mqttd main program

guowenxue

2019-03-25 0603c4946b5b70a9c5d65ba5f0628ff6bad58cd7

 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