Update mqttd program, add cJSON parser and test ok with memory leak

guowenxue

2019-06-25 985548471892c5f2a7430c5f7b4c03fe39f0134f

 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