title: plugin_not_installed in this.googlePlus.login() function
body: <p>I'm trying to use Ionic <a href="https://ionicframework.com/docs/native/google-plus/" rel="nofollow noreferrer">google plus plugin</a> in my Ionic application.
  I have a error <code>plugin_not_installed</code> in Android device when I call this.googlePlus.login() function:</p>
  
  <pre><code>this.platform.ready(() =&gt; {
      this.googlePlus.login({})
          .then(res =&gt; console.log(res))
          .catch(err =&gt; console.log(err));
  });
  </code></pre>
  
  <p>I installed plugin using commands:</p>
  
  <pre><code>ionic cordova plugin add cordova-plugin-googleplus --variable REVERSED_CLIENT_ID=myreversedclientid
  npm install --save @ionic-native/google-plus
  </code></pre>
  
  <p>And I added <code>GooglePlus</code> to my providers list in <code>AppModule</code></p>
  
  <p>I upload application using command: <code>ionic upload</code></p>
  
  <p>Here is my plugins list (ionic cordova plugin):</p>
  
  <pre><code>cordova-plugin-camera 2.4.1 "Camera"
  cordova-plugin-compat 1.1.0 "Compat"
  cordova-plugin-console 1.0.7 "Console"
  cordova-plugin-device 1.1.6 "Device"
  cordova-plugin-googleplus 5.1.1 "Google SignIn"
  cordova-plugin-inappbrowser 1.7.1 "InAppBrowser"
  cordova-plugin-nativestorage 2.2.2 "NativeStorage"
  cordova-plugin-statusbar 2.2.3 "StatusBar"
  cordova-plugin-whitelist 1.3.2 "Whitelist"
  cordova-sqlite-storage 2.0.4 "Cordova sqlite storage plugin"
  ionic-plugin-keyboard 2.2.1 "Keyboard"
  phonegap-plugin-push 2.0.0-rc5 "PushPlugin"
  </code></pre>