CURLOPT_XOAUTH2_BEARER(3) on macOS

The text ff0b2a036e37, as macOS 10.12.5, macOS 10.12.4, macOS 10.12.3, macOS 10.12.2, macOS 10.12.1, macOS 10.12 shipped it.

specify OAuth 2.0 access token

CURLOPT_XOAUTH2_BEARER(3) on macOS now