* 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/api/atom_api_url_request.cc
scoped_refptr<const net::AuthChallengeInfo> auth_info) {
  if (request_state_.Canceled() || request_state_.Closed()) {
    return;
  }
  DCHECK(atom_request_);
  if (!atom_request_) {
    return;
  }
  Emit("login", auth_info.get(),
       base::Bind(&AtomURLRequest::PassLoginInformation, atom_request_));
}
void URLRequest::OnResponseStarted(
    scoped_refptr<net::HttpResponseHeaders> response_headers) {
  if (request_state_.Canceled() || request_state_.Failed() ||
      request_state_.Closed()) {
    
    return;
  }
  response_headers_ = response_headers;
  response_state_.SetFlag(ResponseStateFlags::kStarted);
  Emit("response");
}
void URLRequest::OnResponseData(