Read from temperature sensor

[TommyLin]

Sensor Board: Grove temperature and humidity sensor v1.2

• Connect E9V3 to sensor board
• Testing E9V3 i2c read / write
• Read DHT11 sensor board, link to E9V3 i2c sample code
• Diaply temperature / humidity value on screen

References:

1. Grove - Temperature&Humidity Sensor (DHT11)
2. Github source code for Arduino (C++)
3. Github source code for Raspberry Pi (Python)