title: Azure App Service library for iOS apps (not Xamarin iOS) to work with Azure Push Notification Hubs, now that Mobile App Services is deprecated
body: <p>Now that Microsoft has deprecated Mobile App Services iOS SDK, which is referenced in some of their examples (1.2.4 vs. last 2.2.2), and is transitioning to Azure App Service, there is no clear explanation of what to link to a Swift4 (or Objective-C) Xcode 9 project to modify for the Notification hub name and ListenSharedAccess URL.  Please advise with example code an reference documents.  This is for iOS app push notification with Azure Notification Hubs as connecting with the backend to register tokens etc., not Xamarin iOS (for which there is an example on MSFT site).</p>