title: Xcode Error When Added AdMob Plugin To Ionic Project
body: <p>I have an Ionic 3 Project and its running normally on Ionic DevApp And Xcode. But When i added AdMob Plugin , its running normally Ionic DevApp but its not running on Xcode. I tried Simulator and Real Device but i have some mistake both of them. </p>
  
  <p>There is my error codes;</p>
  
  <pre><code>Terminating app due to uncaught exception
  'GADInvalidInitializationException', reason: 
  'The Google Mobile Ads SDK was initialized incorrectly. 
  Google AdMob publishers should follow instructions here: 
  
  https://googlemobileadssdk.page.link/admob-ios-update-plist 
  to include the AppMeasurement framework, 
  set the -ObjC linker flag, and set 
  GADApplicationIdentifier with a valid App ID. 
  
  Google Ad Manager publishers should follow 
  instructions here: 
  https://googlemobileadssdk.page.link/ad-manager-ios-update-plist
  </code></pre>