* 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
public:
    void SetFlag(Flags flag);
   protected:
    explicit StateBase(Flags initialState);
    bool operator==(Flags flag) const;
    bool IsFlagSet(Flags flag) const;
   private:
    Flags state_;
  };
  enum class RequestStateFlags {
    kNotStarted = 0x0,
    kStarted = 0x1,
    kFinished = 0x2,
    kCanceled = 0x4,
    kFailed = 0x8,
    kClosed = 0x10
  };
  class RequestState : public StateBase<RequestStateFlags> {