Hey peeps, There was an issue on stack overflow,
http://stackoverflow.com/questions/40429670/unifiedpush-node-sender-compl...
The notification would be sent ok, but the node clients promise would
always be rejected, it turns out we were looking for a 200 status, and not
a 202(which is what is returned and defined in the REST api docs).
I've updated this and pushed out a 0.14.1 release on Saturday night.