gistfile1.js

function initDbHashAndFirstRun() {  
    return when(models.Settings.read('dbHash')).then(function (dbhash) {
        // we already ran this, chill
        self.dbHash = dbhash.attributes.value;
        return dbhash.attributes.value;
    }).otherwise(function (error) {
        // this is where all the "first run" functionality should go
        var dbhash = uuid.v4();
        return when(models.Settings.add({key: 'dbHash', value: dbhash, type: 'core'})).then(function () {
            self.dbHash = dbhash;
            return dbhash;
        }).then(doFirstRun);
    });
}