Docs: add example : how to use it ?

README.md

@@ -1,4 +1,41 @@
-# torrent-files-library [![Build Status](https://img.shields.io/travis/jy95/torrent-files-library.svg)](https://travis-ci.org/jy95/torrent-files-library)  [![Coveralls branch](https://img.shields.io/coveralls/jy95/torrent-files-library/master.svg)](https://coveralls.io/github/jy95/torrent-files-library?branch=master) [![Dependency Status](https://img.shields.io/david/jy95/torrent-files-library.svg)](https://david-dm.org/jy95/torrent-files-library)  [![Dev Dependency Status](https://img.shields.io/david/dev/jy95/torrent-files-library.svg)](https://david-dm.org/jy95/torrent-files-library?type=dev) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+# torrent-files-library [![Build Status](https://img.shields.io/travis/jy95/torrent-files-library.svg)](https://travis-ci.org/jy95/torrent-files-library)  [![Coveralls branch](https://img.shields.io/coveralls/jy95/torrent-files-library/master.svg)](https://coveralls.io/github/jy95/torrent-files-library?branch=master) [![Dependency Status](https://img.shields.io/david/jy95/torrent-files-library.svg)](https://david-dm.org/jy95/torrent-files-library)  [![Dev Dependency Status](https://img.shields.io/david/dev/jy95/torrent-files-library.svg)](https://david-dm.org/jy95/torrent-files-library?type=dev) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)  [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 > Enables to get a library of downloaded torrent files (movie or tv show) from a directory
 
-WIP
+WIP
+
+## Usage
+
+```node
+const TorrentLibrary = require("torrent-files-library");
+
+let paths = [
+	"D:\DDL\FILMS", // a path where I can find both movies and tv-series
+	"D:\DDL\SERIES TV\Le juge et le pilote" // a path where I can find episodes of a tv-serie
+];
+
+// create an instance
+let libInstance = new TorrentLibrary();
+
+// add these paths inside this lib
+libInstance
+	.addNewPath(...paths)
+	.then( (message) => {
+		console.log(message);
+		return libInstance.scan();
+	})
+	.then( (otherMessage) => {
+		console.log(otherMessage);
+
+		setTimeout(function(){
+			// display the found files and their category
+			libInstance
+				.allFilesWithCategory()
+				.forEach(function(value,key){
+					console.log(key + " : " + value);
+				});
+		}, 2500);
+	})
+	.catch( (err) => {
+		console.log(err.message);
+	});
+```