docs: update readme

Author: int64ago

README.md

@@ -1,3 +1,92 @@
 # react-hooks-interval
 
-Custom React Hooks
+[![NPM version][npm-image]][npm-url]
+[![npm download][download-image]][download-url]
+[![Build Status][travis-image]][travis-url]
+
+Custom React Hooks for setInterval
+
+## Install
+
+>**Note:** The Hooks isn't stable now, the stable version will be available on [Q1 of 2019](https://reactjs.org/blog/2018/11/27/react-16-roadmap.html).
+>
+>Make sure that you have installed the correct version of `react(v16.7.0-alpha.2)` and `react-dom(v16.7.0-alpha.2)`.
+
+### npm
+
+```bash
+npm install --save @use-hooks/interval
+```
+
+### yarn
+
+```bash
+yarn add @use-hooks/interval
+```
+
+## API
+
+### Params
+
+```js
+/**
+ * Params
+ * @param {function} callback - Custom logic function
+ * @param {number|null} delay - Delayed millisecond, stop if null
+ */
+```
+
+### Returns
+
+```js
+/**
+ * Returns
+ */
+```
+
+## Usage
+
+```js
+import React, { useState } from 'react';
+
+import useInterval from '@use-hooks/interval/index';
+
+export default function App() {
+  const [count, setCount] = useState(0);
+
+  useInterval(() => {
+    setCount(count + 1);
+  }, 1000);
+
+  return (
+    <div>
+      <h2>DEMO of <span style={{ color: '#F44336' }}>@use-hooks/interval</span></h2>
+      <p>Count: {count}s</p>
+    </div>
+  );
+}
+
+```
+
+[Live Show](https://use-hooks.github.io/react-hooks-interval/)
+
+## Development
+
+> Node >= v8 LTS
+
+ - Clone the project to local disk
+ - `npm install`
+ - `npm start`
+
+## License
+
+MIT
+
+> Generated by [create-react-hooks](https://github.com/use-hooks/create-react-hooks).
+
+ [npm-image]: https://img.shields.io/npm/v/@use-hooks/interval.svg?style=flat-square
+ [npm-url]: https://npmjs.org/package/@use-hooks/interval
+ [download-image]: https://img.shields.io/npm/dm/@use-hooks/interval.svg?style=flat-square
+ [download-url]: https://npmjs.org/package/@use-hooks/interval
+ [travis-url]: https://travis-ci.org/use-hooks/react-hooks-interval
+ [travis-image]: https://img.shields.io/travis/use-hooks/react-hooks-interval.svg?style=flat-square