Update README.md

Author: s0ph1e

README.md

@@ -1,2 +1,29 @@
-# save-to-existing-directory
-Plugin for website-scraper which allows to save resources to existing directory
+[![Version](https://img.shields.io/npm/v/website-scraper-existing-directory.svg?style=flat)](https://www.npmjs.org/package/website-scraper-existing-directory)
+[![Downloads](https://img.shields.io/npm/dm/website-scraper-existing-directory.svg?style=flat)](https://www.npmjs.org/package/website-scraper-existing-directory)
+[![Build Status](https://travis-ci.org/website-scraper/website-scraper-existing-directory.svg?branch=master)](https://travis-ci.org/website-scraper/website-scraper-existing-directory)
+
+# website-scraper-existing-directory
+Plugin for [website-scraper](https://github.com/s0ph1e/node-website-scraper) which allows to save resources to existing directory.
+
+Please keep in mind that saving to existing directory may overwrite your files. Be careful with it!
+
+## Requirements
+* nodejs version >= 8
+* website-scraper version >= 4
+
+## Installation
+```sh
+npm install website-scraper website-scraper-existing-directory
+```
+
+## Usage
+```javascript
+const scrape = require('website-scraper');
+const SaveToExistingDirectoryPlugin = require('website-scraper-existing-directory');
+
+scrape({
+    urls: ['http://example.com'],
+    directory: '/path/to/save',
+    plugins: [ new SaveToExistingDirectoryPlugin() ]
+});
+```