title: Enable Popups in React Native WebView
body: <p>I have a react native application(using react-native 0.43.3) that uses webview to show a web page used for online banking. That site loads a popup window with the login page. </p>
  
  <p>With the ReactNative WebView this popup window in not shown. In native android to enable popup window showing I found out that I need to make <code>webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true)</code>, but couldn't found a way to set this parameter when using ReactNative WebView. </p>
  
  <p>Is there a way which I can achieve this with the WebView provided with ReactNative?</p>