Add support for follow redirect

[alee13-chwy]

Since 301 and 302 are considered as successful, it misses error when the final Location is an error.

Using contentInspector(result) gives me access to result.headers.location but not make a new request by setting options.path = result.headers.location

[alexfernandez]

Sorry for the inexcusable delay. I imagine it should be easier to make a request to the final location. In any case, if you propose a patch I will gladly accept it.