Data science 20141007 rc

Revisions based on Pull Request: https://github.com/jmmastey/level_up_exercises/pull/150

-clean up errors with main file
-add test_no_winner json data and tests
-convert main.rb into a Results class which takes the calculations from Dataset and wraps in some nice output
-using Hirb gem to format the console output
also forgot to mention your its are giving absolutely no information, it's probably because you define that in the context instead which totally isn't right. sorry i didnt catch it earlier.

and as i said earlier you can do expect(subject.file_name) instead