docs(atomic-block): update docs for atomic-block

Author: freedomlang

packages/atomic-block/README.md

@@ -1,10 +1,19 @@
-# djs@atomic-block - Not released, please use with caution ;)
+# @djsp/atomic-block
 
 ![file size](http://img.badgesize.io/https://unpkg.com/@djsp/atomic-block/dist/index.js?label=size&style=flat-square)
 [![NPM](https://img.shields.io/npm/v/@djsp/atomic-block.svg)](https://www.npmjs.com/package/@djsp/atomic-block) [![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
 
+## Installation
 
-Example:
+`@djsp/atomic-block` depends on `@djsp/utils` which must also be installed.
+
+```sh
+npm install --save @djsp/utils @djsp/atomic-block
+# or alternately
+yarn add @djsp/utils @djsp/atomic-block
+```
+
+## Usage
 
 ```jsx
 <EditorContainer>
@@ -19,3 +28,6 @@ Example:
   </AtomicBlock>
 </EditorContainer>
 ```
+
+## Examples
+- [Editor with image](https://codesandbox.io/s/github/draft-js-plugins/next/tree/master/examples/atomic-block)