Added console warning to InputAccessoryView

Reviewed By: mmmulani

Differential Revision: D7305377

fbshipit-source-id: 4a9888b5592014956c3aa44baffb2ac3a0329b88

Libraries/Components/TextInput/InputAccessoryView.js

@@ -90,6 +90,8 @@ type Props = {
 
 class InputAccessoryView extends React.Component<Props> {
   render(): React.Node {
+    console.warn('<InputAccessoryView> is not supported on Android yet.');
+
     if (React.Children.count(this.props.children) === 0) {
       return null;
     }