Arduino shield

I am trying to reconnect my Arduino to my imp using an Arduino shield. I used to do this the way described in this tutorial.
But I can’t use the planner anymore and I don’t know how to accomplish this now.
Anybody?

Ok, I found documentation here:
https://electricimp.com/docs/api/hardware/uart/
But I don’t think that example is quite finished…
– edit
found it here:
https://gist.github.com/electricimp/6706939
now trying to get the code to work…