Add more stats for country guessing #1260

@juanignaciosl can you please review? thanks!
Ok, that's true, didn't remember that it's equivalent (edited comment). Nevertheless maybe we could adhere to a style guide for a quick way to resolve this kind of doubts and for mental sanity :). I'd suggest [this one](https://github.com/bbatsov/ruby-style-guide), the one [Github guide](https://github.com/styleguide/ruby) is based. In this case it recommends a one-liner:
```
# good
def no_op; end
```