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README.md

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 # CAP
 [![Travis branch](https://img.shields.io/travis/dotnetcore/CAP/master.svg?label=travis-ci)](https://travis-ci.org/dotnetcore/CAP)
 [![AppVeyor](https://ci.appveyor.com/api/projects/status/4mpe0tbu7n126vyw?svg=true)](https://ci.appveyor.com/project/yuleyule66/cap)
+[![NuGet](https://img.shields.io/nuget/vpre/DotNetCore.CAP.svg)](https://www.nuget.org/packages/DotNetCore.CAP/)
 [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/dotnetcore/CAP/master/LICENSE.txt)
 
 CAP is a library to achieve eventually consistent in distributed architectures system like SOA,MicroService. 	It is lightweight,easy to use and efficiently.