Update readme to add nuget link

Author: xoofx

Readme.md

@@ -1,9 +1,13 @@
-# SharpDX [![Build status](https://ci.appveyor.com/api/projects/status/21v2akj26ytuyml6?svg=true)](https://ci.appveyor.com/project/xoofx/sharpdx)
+# SharpDX [![Build status](https://ci.appveyor.com/api/projects/status/21v2akj26ytuyml6?svg=true)](https://ci.appveyor.com/project/xoofx/sharpdx)  [![NuGet](https://img.shields.io/nuget/v/SharpDX.svg)](https://www.nuget.org/packages?q=Tags%3A%22SharpDX%22)
 
 Official web site: [sharpdx.org](http://sharpdx.org)
 
 SharpDX is an open-source project delivering the **full DirectX API for .Net on all Windows platforms**, allowing the development of high performance game, 2D and 3D graphics rendering as well as realtime sound application.
 
+## Download
+
+All SharpDX packages are available as NuGet packages: [![NuGet](https://img.shields.io/nuget/v/SharpDX.svg)](https://www.nuget.org/packages?q=Tags%3A%22SharpDX%22)
+
 ## Wiki Documentation
 
 You can find more documentation on the [Wiki](http://sharpdx.org/wiki)