title: React Native <ScrollView> persistent scrollbar
body: <p>After perusing the <a href="http://facebook.github.io/react-native/docs/scrollview.html#props" rel="noreferrer">React Native Documentation</a> I couldn't seem to find out how to make a <code>&lt;ScrollView&gt;</code> have a persistent scrollbar that doesn't fade out. How would I achieve that?</p>