Merge pull request #31 from karan259/master

Excellent work!  LED Blink example added
Create grove_barometer_lib.py
Create grove_barometer_example.py
added support for grove_nfc_tag module
Added support for Grove 16x2 RGB backlit LCD
Merge pull request #33 from joemarshall/master

Added support for grove NFC tag and 16x2 LCD
Merge pull request #32 from Guruth/master

Barometer Lib and Example thanks Guruth!
Merge pill request # 34 from JohanVandewalle

new python scripts for the grove i2c barometic sensor and the grove i2c
digital light sensor
Merge pull request #34 from JohanVandewalle/master

Merge pull request # 34 from JohanVandewalle