feat: add useScrolling story

src/__stories__/useScrolling.story.tsx

@@ -0,0 +1,31 @@
+import { storiesOf } from '@storybook/react';
+import * as React from 'react';
+import { useScrolling } from '..';
+import ShowDocs from './util/ShowDocs';
+
+const Demo = () => {
+  const scrollRef = React.useRef(null);
+  const scrolling = useScrolling(scrollRef);
+
+  return (
+    <>
+      {<div>{scrolling ? 'Scrolling' : 'Not scrolling'}</div>}
+      <br />
+      <div
+        ref={scrollRef}
+        style={{
+          width: '400px',
+          height: '400px',
+          backgroundColor: 'whitesmoke',
+          overflow: 'scroll',
+        }}
+      >
+        <div style={{ width: '2000px', height: '2000px' }}>Scroll me</div>
+      </div>
+    </>
+  );
+};
+
+storiesOf('Sensors/useScrolling', module)
+  .add('Docs', () => <ShowDocs md={require('../../docs/useScrolling.md')} />)
+  .add('Demo', () => <Demo />);