Extracted method to calculate the score of the two balls in the frame
Removed @first_throw @second_throw and frame_score variables
Merged handle_second_throw back into score_for_frame
Updated Game#score_for_frame's logic for strikes
Updated Game#score_for_frame's logic for spares
Removed unnecessary parenthesis
Added a Scorer class
Updated Game class to use the Scorer to calculate the score
Removed unused variable on Game class
Updated logic of Game#adjust_frame to advance the frame in a separate method
Updated logic of strikes in Game#adjust_frame
Changed the Frame's limit to be 10
Removed tests for current_frame
Updated the logic to advance frames
Updated logic of adjust_current_frame to be more readable
Updated logic of adjust_current_frame again to be more readable
Added attr_reader to game class
Replaced duplicate logic in scorer with a method
Removed unused classes