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
This can be refactored a little bit by taking advantage of [Enumerable#any?](http://ruby-doc.org/core-2.1.2/Enumerable.html#method-i-any-3F).

```ruby
def contains_point?(x_coord, y_coord)
  rectangles.any? do |rectangle|
    rectangle.contains_point?(x_coord, y_coord)
  end
end
```

So if the block returns true for any of the iterations, the return value will be true, otherwise, false.