Update README.md

README.md

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 # BrowserNotif.JS
 [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/ipanardian/browser-notif/issues) 
-[![Release](https://img.shields.io/badge/release-v2.0.0-orange.svg)](https://github.com/ipanardian/browser-notif/releases)
+[![Release](https://img.shields.io/badge/release-v2.1.0-orange.svg)](https://github.com/ipanardian/browser-notif/releases)
 [![Typescript](https://img.shields.io/badge/Typescript-v2.1-blue.svg)](https://github.com/ipanardian/browser-notif/releases)
 [![Dependencies](https://img.shields.io/badge/dependencies-none-brightgreen.svg)](https://github.com/ipanardian/browser-notif)
 [![GitHub license](https://img.shields.io/badge/license-MIT-red.svg)](https://raw.githubusercontent.com/ipanardian/browser-notif/master/LICENSE)
+[![NPM Download](https://img.shields.io/npm/dt/browser-notif.svg)]()
 
 Lets a web page send notifications that are displayed outside the page at the system level. 
 This lets web apps send information to a user even if the application is idle, in the background, switched tabs or moved to a different app.