rename competition class/table to event in attempt to fix bug within 'assign_game' method; change .new methods to .create.
make 'view_divisions' method for UI.
create 'view_competitors' method for user to view all current competitors and the division id they belong to.
create 'view_games' method in UI for a user to view all current games.
create 'disqualified' column for 'competitors
' table; create 'mark_disqualified' method to UI so that user can mark a competitor as disqualified; update 'list_competitors' method to only show qualifying competitors.
fix and uncomment 'mark_disqualified' method in UI.
uncomment 'assign-game' method.  Update ReadMe to show bugs.