- Electron version: 1.2.6
- Operating system: osx yosemite

Do the autoUpdater objects on osx and windows have different properties? On windows, when i do `console.log(JSON.stringify(autoUpdater));`
I see the properties `domain`, `_events`, `_eventsCount`, and `updateURL`. However, doing the same thing on osx only allows me to see the properties `_events` and `_eventsCount`. 

I want to access `updateURL` in my code but I'm wondering whether that property is accessible. Maybe I should submit a PR for a `getFeedURL` method?

atom/browser/api/atom_api_auto_updater.h
#ifndef ATOM_BROWSER_API_ATOM_API_AUTO_UPDATER_H_
#define ATOM_BROWSER_API_ATOM_API_AUTO_UPDATER_H_
#include <string>
#include "atom/browser/api/event_emitter.h"
#include "atom/browser/auto_updater.h"
#include "atom/browser/window_list_observer.h"
#include "native_mate/arguments.h"
#include "native_mate/handle.h"
namespace atom {
namespace api {
class AutoUpdater : public mate::EventEmitter<AutoUpdater>,