fix output of render_answer
re-add guess button
Extract scatchpad into class files, add player spec, reconfigure rspec spec_helper
spec player class, pre-empting refactor of make_guess
fully spec out Game class
fully spec Answer class
fully spec Guess
refactor Game class
fix player.make_guess -> game.make_guess
naming changes, make_guess -> new_guess, check_guess -> handle_guess
clean up game completed? method
change Guess.letter to Guess.string
massssssiiivveeeee refactor of Answer class
fix duplicate detection on Answer
make guess and answer case-insensitive
Add Abacus for scoring system

We've added an Abacus class which will be used for our scoring system.

The class will only be concerned with returning points for a given scenario,
not for keeping a running total (responsibility of the game). Our plan is
to hopefully build this class in a way that will allow other teams to inject
the functionality into their own projects.
add specs for base_score on Abacus
calculate base score for letters and word guesses
calculate total score for letters and word guesses
default score and base score to 0, handle incorrect guesses