feat: add <WindowWidthSensor> stories

src/WindowWidthSensor/__story__/story.js

@@ -0,0 +1,18 @@
+import {createElement as h} from 'react';
+import {storiesOf} from '@storybook/react';
+import {action} from '@storybook/addon-actions';
+import {WindowWidthSensor} from '..';
+import ShowDocs from '../../../.storybook/ShowDocs'
+
+storiesOf('Sensors/WindowWidthSensor', module)
+  // .add('Documentation', () => h(ShowDocs, {md: require('../../../docs/en/WindowWidthSensor.md')}))
+  .add('Example', () =>
+    h(WindowWidthSensor, {onChange: action('onChange')}, ({width, height}) =>
+      h('div', {},
+        `WIDTH: ${width}, HEIGHT: ${height}`
+      )
+    )
+  )
+  .add('No children', () =>
+    h(WindowWidthSensor, {onChange: action('onChange')})
+  )