Merge pull request #2 from karan259/master

Support added for a few sensors,firmware update, readme update
Merge pull request #3 from karan259/master

Grove Pi install script added
Added switch example
Merge pull request #4 from karan259/master

Firmware update script added
Script update
Update script
Update Blink
Updated install script with a thank you note.
Merge pull request #5 from karan259/master

GrovePi Firmware and software update v1.1
logo added