* 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.h
namespace api {
class URLRequest : public mate::EventEmitter<URLRequest> {
 public:
  static mate::WrappableBase* New(mate::Arguments* args);
  static void BuildPrototype(v8::Isolate* isolate,
                             v8::Local<v8::FunctionTemplate> prototype);
  
  void OnAuthenticationRequired(
      scoped_refptr<const net::AuthChallengeInfo> auth_info);
  void OnResponseStarted(
      scoped_refptr<net::HttpResponseHeaders> response_headers);
  void OnResponseData(scoped_refptr<const net::IOBufferWithSize> data);
  void OnResponseCompleted();
  void OnError(const std::string& error, bool isRequestError);
 protected:
  explicit URLRequest(v8::Isolate* isolate, v8::Local<v8::Object> wrapper);
  ~URLRequest() override;
 private:
  template <typename Flags>
  class StateBase {