Return function push()

[marlon33]

I change this line 277 ~280

dbData.setData(toSet);
      if (this.config.saveOnPush) {
            this.save();
        }

to this

dbData.setData(toSet);
      if (this.config.saveOnPush) {
            this.save();
            return toSet;
        }

if possible can add this to a final code?