Refactored Example

I refactored the code for hw3 some after we were done. I'm just sending this pull request so you can check out the differences to compare and contrast our more literal ruby code to the use of some rspec and cucumber syntactic sugar.

This is the only commit you need to check out if interested: [movie_steps.rb refactored](https://github.com/DanSchmidt/hw3-rottenpotatoes/commit/c981f8fb3069fafcc64a36c353a6ae6baad35f93)