title: application initializing document picker is missing the icloud entitlement
body: <p>I am using 'react-native-document-picker' library and using iphone 6 simulator.
  I am getting an exception: 'Application initializing document picker is missing the iCloud entitlement', whenever I clicked on the button. how can I resolve this issue? 
  please suggest me any solution. thanks in advance.</p>
  
  <p><a href="https://i.stack.imgur.com/hvUR2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hvUR2.png" alt="enter image description here"></a></p>
  
  <pre><code>import { DocumentPicker, DocumentPickerUtil } from 'react-native-document-picker';
  export class EditInformation extends Component {
  
   docPicker() {
    DocumentPicker.show({
    filetype: [DocumentPickerUtil.images()]
     },(error, res) =&gt; {
   });
  }
  render() {
   return (
     &lt;View&gt;
       &lt;Button onPress={() =&gt; this.docPicker()}&gt;
          &lt;Text&gt; Upload image &lt;/Text&gt;
        &lt;/Button&gt;
      &lt;/View&gt;
    )}
  }
  </code></pre>