Hh refactor

Hi Carly,

Great job on the systems check!  It looks really nice.

I made some edits to your app in this Pull Request, which you can see by clicking on the "Files changed" or "Commits" tabs.  The main thing I changed was to modify your `team_games` method to return an array of hashes instead of an array of arrays.  Otherwise, it was mostly whitespace/formatting edits.

Let me know if you have any questions on the edits or further questions.

Nice work!

Helen