FizzBuzz Ruby

Well since I was in the mood writing FizzBuzz and since I've been working on learning Ruby, I figured, why not do recursive fizzbuzz in ruby?

Ruby is quite an expressive language. It feels like it comes with more built-in keywords and default methods than python, so I'm sensing it is a bit more complex to learn. However, it has some neat stuff. I'm thinking of writing FizzBuzz using some of the different methods it has, like .net and the '..' range. I've also seen a built in function something to the effect of '.upto' which might be fun to play with as well.