Send error details to bugsnag as an option

I need this option to inspect more deeply some erros like an oauth error of https://github.com/drudge/passport-facebook-token/blob/master/lib/passport-facebook-token/strategy.js#L174 that uses https://github.com/jaredhanson/passport-oauth2/blob/master/lib/errors/internaloautherror.js#L18 and set detail of the error as a property of the error object.