…om to room displaying errors if selected room does not exist

…tion` to determine where player is located

feat(adv.py): `self.display_room_description` uses try/except blocks to avoid errors where a room does not exist
style(adv.py): `self.display_direction` renamed to `self.handle_player_direction`

…_room_description`

feat(adv.py): `self.print_room_description` now returns the current rooms description
style(adv.py): add double newlines "\n\n" to each passage description in `self.print_room_description`