Ruby-style code formatting

Hi,

This is a very subjective pull request, feel free to ignore it if you're not agree with this code formatting style. 

As an everyday Ruby developer last years, I found to myself very hard to read the code in this example it looks very much like C/Objective C style formatting for me, but not a Ruby style definately.  

I agree with most rules described here https://github.com/bbatsov/ruby-style-guide many of them are quite obvious and natural for any Ruby library, so might be a good reference.

Thanks for the example and JoyBox, I've been waiting for it so long and I am sure I am not alone !