Update README.md

quantjin · web-flow · commit 7e8df0e402cb · 2017-02-17T14:45:46.000+08:00
diff --git a/README.md b/README.md
@@ -1,4 +1,9 @@
-## QuantLib Async Bindings for Node.js [![npm version](https://badge.fury.io/js/quantlib.svg)](http://badge.fury.io/js/quantlib) [![Twitter Follow](https://img.shields.io/twitter/follow/quantlibnode.svg?style=social&maxAge=3600)](https://twitter.com/quantlibnode)
+## QuantLib Async Bindings for Node.js 
+
+[![NPM](https://nodei.co/npm/quantlib.png?downloads=true&downloadRank=true)](https://nodei.co/npm/quantlib/)
+
+[![npm version](https://badge.fury.io/js/quantlib.svg)](http://badge.fury.io/js/quantlib) 
+[![Twitter Follow](https://img.shields.io/twitter/follow/quantlibnode.svg?style=social&maxAge=3600)](https://twitter.com/quantlibnode)
 
 This [open source project](https://github.com/quantlibnode/quantlibnode) brings [QuantLib](http://quantlib.org/) to the Node.js community, it's similar to [QuantLibXL](http://quantlib.org/quantlibxl/) project which is for Microsoft Excel.
 
