message: Add readme to fetching example
  Add fetching example link to main readme
diff: -# Interaction example
  +# Data fetching example
  -The app that rendered checkbox and handles the `onSelectionEnter`, `onSelectionLeave` events.
  +The app that displayed user name through [swapi](https://swapi.co/) API.
  Demo:
  -<p align="center"><img src="https://media.giphy.com/media/j2Rh9Ww5nKvwowB5gi/giphy.gif" width="480"></p>
  +<p align="center"><img src="https://media.giphy.com/media/U8NLxe145P2soFwK8p/giphy.gif" width="480"></p>
  Code example:
  ```javascript
  -const [checked, setChecked] = React.useState(false);
  -...
  -<Frame style={styles.frame}>
  - <Checkbox
  - checked={checked}
  - label="select me"
  - onSelectionEnter={() => setChecked(true)}
  - onSelectionLeave={() => setChecked(false)}
  - />
  - <Text style={styles.text}>{checked ? 'Checkbox selected' : 'Checkbox not selected'}</Text>
  - <Text style={styles.text}>{`Counter: ${counter}`}</Text>
  +import * as React from 'react';
  +import { Page, Frame, StyleSheet, Text, useFetch } from 'react-figma';
  +
  +
  +export const App = () => {
  + const { isLoading, data } = useFetch(`https://swapi.co/api/people/1`);
  +
  + return (
  + <Frame>
  + <Text>{`isLoading: ${(isLoading && 'true') || 'false'}`}</Text>
  + <Text>{`Name: ${data && data.name}`}</Text>
  </Frame>
  + );
  +};
  ```
  [How to run](../../contributing.md#running-examples)
  