NodeJS (Galileo-IO) + Arduino sensor library
Including the header files for the libraries in the standard Firmata
sketch is only the first step. You will have to also modify the sketch in
order to actually use the libraries. You will have to figure out a way
of interacting with the libraries through the Firmata protocol and
implement this in your modified version of the sketch. You will then
have to modify the JavaScript side to enable these new interactions.
That's where you will write the missing methods