can't create a cookie in a wrapped request (defaults)

[fabianonunes]

when the request object is a wrapped defaults, creating a cookie throws a expection

var cookie = request.cookie( 'your_cookie_here' )
Error: The cookie function only accepts STRING as param

the 'cookie' method only accepts a string, but the wrapped request transforms any params in { uri:opts }

if (typeof opts === 'string') opts = {uri:opts}