Bash script to delete ALL ARCHIVED Trello cards in a specific board.
Run bash trello_delete.sh BOARD_ID API_KEY API_TOKEN.
BOARD_ID can be found on the Trello board url. If the url is https://trello.com/b/7hWC8gGt/my-board, the BOARD_ID is 7hWC8gGt.
API_KEY and API_TOKEN can be found/generated in https://trello.com/app-key.