Uh, there should be a file named Hardware Tycoon in \hardwaretycoon.app\Contents\MacOS\
I don't have a way to test the mac release, but it looks like everything was exported properly.
Sorry, I have to go to school so I didn't have much time to read about it but found this: https://github.com/nwjs/nw.js/wiki/how-to-run-apps
My knowledge about Mac OS is nonexistent, I can't help you much.
