code: function(model) {
      if (!model.id) {
        model.id = guid();
        model.set(model.idAttribute, model.id);
      }
      this.localStorage().setItem(this.name+"-"+model.id, JSON.stringify(model));
      this.records.push(model.id.toString());
      this.save();
      return this.find(model);
    }
docs: Add a model, giving it a (hopefully)-unique GUID, if it doesn't already have an id of it's own.