Authentication Token vs Bearer token

I am trying to use ActionController::HttpAuthentication::Token and the header for get the toke have to be Authenticate Token token=“…” but I am trying to follow OAuth2 Bearer Token and I have no way to change Token key for Bearer.

I suggest to allow us to customize the key or change the key for follow some standard

This has been merged to Rails master: https://github.com/rails/rails/pull/19094, so it should be out with Rails 5.