I've gained more wisdom here today than ever before! 
I was just looking at that contrib on Github and saw a warning from (I guess) a node-red developer called Sam Machin warning that it would break in Node-red 2.0 (I was running 1.3.5) . Looks like the developer stopped before then because it was the last issue left unanswered.
Presumably this is because of the new feature I have yet to take advantage of!
Could you point me at where it is documented? Sorry to be so helpless!
Also, should I run npm rebuild in both those directories I mentioned earlier?
