[fix] Handle errors from the incoming stream.
[minor doc] Fix typo in method documentation.
[dist] Use `request`. Bump `tmp` version.
[refactor test] Refactor tests to be consistent.
[doc] Updated README.md. Added docs for upcoming `npm` handler.
[fix] Remove bad `;`.
[dist] Updated `test` script.
[api test] Added `npm` handler to `node-checkout` with associated test.