* 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.h
bool Write(scoped_refptr<const net::IOBufferWithSize> buffer, bool is_last);
  void SetChunkedUpload(bool is_chunked_upload);
  void Cancel();
  void SetExtraHeader(const std::string& name, const std::string& value) const;
  void RemoveExtraHeader(const std::string& name) const;
  void PassLoginInformation(const base::string16& username,
                            const base::string16& password) const;
  void SetLoadFlags(int flags) const;
 protected:
  
  void OnAuthRequired(net::URLRequest* request,
                      net::AuthChallengeInfo* auth_info) override;
  void OnResponseStarted(net::URLRequest* request) override;
  void OnReadCompleted(net::URLRequest* request, int bytes_read) override;
  
  void OnContextShuttingDown() override;
 private:
  friend class base::RefCountedThreadSafe<AtomURLRequest>;
  explicit AtomURLRequest(api::URLRequest* delegate);
  ~AtomURLRequest() override;
  void DoInitialize(scoped_refptr<net::URLRequestContextGetter>,
                    const std::string& method,
                    const std::string& url);
  void DoTerminate();
  void DoWriteBuffer(scoped_refptr<const net::IOBufferWithSize> buffer,
                     bool is_last);
  void DoCancel();
  void DoSetExtraHeader(const std::string& name,
                        const std::string& value) const;
  void DoRemoveExtraHeader(const std::string& name) const;