Update prompter.py: catch 'KeyboardInterrupt'

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update createCommand.py: add _downloadDir

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update gcli: change camelCase to snake_case

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>