title: Invariant Violation: requireNativeComponent: "RNGADBannerView" was not found in the UIManager
body: <p><strong>I recently installed admob for react-native.but i m getting an error "RNGADBannerView" was not found in the UIManager".I don't know what that supposed to mean?</strong></p>
  
  <p><code>_can anyone help?_</code></p>
  
  <pre><code>import {AdMobBanner} from 'react-native-admob';
  
    export default class Home extends Component{
     render(){
      return &lt;View&gt;
          &lt;Text&gt;helo&lt;/Text&gt;
          &lt;AdMobBanner
              adSize="fullBanner"
              adUnitID="my_id"
              onAdFailedToLoad={error =&gt; console.error(error)}
          /&gt;
      &lt;/View&gt;
  }
  </code></pre>
  
  <p><strong>dependencies:</strong></p>
  
  <pre><code>   "react": "16.4.1",
     "react-native": "0.56.0",
     "react-native-admob": "^2.0.0-beta.5",
     "react-native-fbsdk": "^0.7.0",
      "react-navigation": "^2.6.2"
  </code></pre>