add tests to debit

most are failing; probably I'm getting the wrong account_id value

Signed-off-by: Maurice Rickard <maurice@mauricerickard.com>
add debit methods

Signed-off-by: Maurice Rickard <maurice@mauricerickard.com>
update gitignore

Signed-off-by: Maurice Rickard <maurice@mauricerickard.com>
Fix debits, add holds and refunds

Signed-off-by: Maurice Rickard <maurice@mauricerickard.com>
test coverage for debits (fixed) and holds.

refunds still a bit confused.

Signed-off-by: Maurice Rickard <maurice@mauricerickard.com>
Update URL of repo

Signed-off-by: Maurice Rickard <maurice@mauricerickard.com>
update npms, which ought to have been ignored

Signed-off-by: Maurice Rickard <maurice@mauricerickard.com>