adds ruby version to gemfile
adds info and route for mastermind
adds gems for testing framework
moves inheritance from config to app
adds an intro heading and paragraph
adds controller for mastermind logic -- empty
adds cucumber features for testing home page
adds tests and steps for start game
adds tests for index page
adds require to controller
adds formatting to rspec output
adds specs for start game
adds features for playing game
adds description and buttons for mastermind
adds styling for mastermind page
adds logic for mastermind game
adds functionality for duplicate guesses