[This](https://github.com/braintree/braintree_node/commit/90226376fc0a35144b2b32ecd14f5091d60a2377#diff-7ae45ad102eab3b6d7e7896acd08c427a9b25b346470d7bc6507b6481575d519) commit has added `npm` as a `dependency`. I believe it's a mistake and should be reverted.