* Electron version: 1.6.1
* Operating system: All

### Expected behavior

It should be possible, when using net.request, to set redirection options. The `ClientRequest` constructor options should contain a "redirect" attribute, with possible values "follow", "error" or "manual" (like window.fetch), and defaulting to "follow".

Also, when a redirection did happen, it should be possible to know it did, and at least get the URL to which we were redirect (for example as an attribute of IncomingMessage).

### Actual behavior

It is not possible to stop redirections from happening, or even to know that it happened and get the new URL.

### How to reproduce

Use net.request on any URL that does a redirect.

atom/browser/net/atom_url_request.cc
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
  if (request_) {
    request_->Cancel();
  }
  DoTerminate();
}
void AtomURLRequest::DoSetExtraHeader(const std::string& name,
                                      const std::string& value) const {
  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
  if (!request_) {
    return;
  }
  request_->SetExtraRequestHeaderByName(name, value, true);
}
void AtomURLRequest::DoRemoveExtraHeader(const std::string& name) const {
  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
  if (!request_) {
    return;
  }
  request_->RemoveRequestHeaderByName(name);
}
void AtomURLRequest::DoSetAuth(const base::string16& username,