updated with this commit

https://github.com/lholmquist/aerogear-unifiedpush-nodejs-client/commit/edf7768891832ce4a30b9c9545e45ac85b1557eb

settings object is more like this now

settings = {
    applicationID: "aa3cfaad-8cd4-4b3c-af23-08417b879d00",
    masterSecret: "shhh",
    ttl: 3600,
    "simple-push": {
        "broadcast": "version="+ new Date().getTime() + ""
    },
    criteria: {
        variants: [ "1234", "56788" ]
    }
};
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