Add info about electron-builder to build windows installer

docs/api/auto-updater.md

@@ -33,8 +33,7 @@ This is a requirement of `Squirrel.Mac`.
 
 On Windows, you have to install your app into a user's machine before you can
 use the `autoUpdater`, so it is recommended that you use the
-[electron-winstaller][installer-lib] module or the [grunt-electron-installer][installer]
-package to generate a Windows installer.
+[electron-winstaller][installer-lib], [electron-builder][electron-builder-lib] or the [grunt-electron-installer][installer] package to generate a Windows installer.
 
 The installer generated with Squirrel will create a shortcut icon with an
 [Application User Model ID][app-user-model-id] in the format of
@@ -116,6 +115,7 @@ should only be called after `update-downloaded` has been emitted.
 [squirrel-windows]: https://github.com/Squirrel/Squirrel.Windows
 [installer]: https://github.com/electron/grunt-electron-installer
 [installer-lib]: https://github.com/electron/windows-installer
+[electron-builder-lib]: https://github.com/electron-userland/electron-builder
 [app-user-model-id]: https://msdn.microsoft.com/en-us/library/windows/desktop/dd378459(v=vs.85).aspx
 [electron-release-server]: https://github.com/ArekSredzki/electron-release-server
 [squirrel-updates-server]: https://github.com/Aluxian/squirrel-updates-server