* 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
v8::Local<v8::FunctionTemplate> prototype) {
  prototype->SetClassName(mate::StringToV8(isolate, "URLRequest"));
  mate::ObjectTemplateBuilder(isolate, prototype->PrototypeTemplate())
      
      .MakeDestroyable()
      .SetMethod("write", &URLRequest::Write)
      .SetMethod("cancel", &URLRequest::Cancel)
      .SetMethod("setExtraHeader", &URLRequest::SetExtraHeader)
      .SetMethod("removeExtraHeader", &URLRequest::RemoveExtraHeader)
      .SetMethod("setChunkedUpload", &URLRequest::SetChunkedUpload)
      .SetMethod("_setLoadFlags", &URLRequest::SetLoadFlags)
      .SetProperty("notStarted", &URLRequest::NotStarted)
      .SetProperty("finished", &URLRequest::Finished)
      
      .SetProperty("statusCode", &URLRequest::StatusCode)
      .SetProperty("statusMessage", &URLRequest::StatusMessage)
      .SetProperty("rawResponseHeaders", &URLRequest::RawResponseHeaders)
      .SetProperty("httpVersionMajor", &URLRequest::ResponseHttpVersionMajor)
      .SetProperty("httpVersionMinor", &URLRequest::ResponseHttpVersionMinor);
}
bool URLRequest::NotStarted() const {