Feedback

Again, I'm not actually suggesting that you merge this in and remove all your code. This just makes it easier to leave feedback :smile: 

Please submit a help request for any questions that you have about my comments.

### Don't merge this pull request
It's not necessary to turn this into an Array. The query returns a PG::Result object that mixes in [Enumerable](http://ruby-doc.org/core-2.1.2/Enumerable.html) which means that it will already act very much like an array and support methods like #each, #map etc.