Merge pull request #56 from abergs/patch-1

Added link to Nuget package

Author: sharwell

README.md

@@ -1,5 +1,7 @@
 # Async Usage Analyzers for the .NET Compiler Platform
 
+[![NuGet package](https://img.shields.io/nuget/v/AsyncUsageAnalyzers.svg)](https://nuget.org/packages/AsyncUsageAnalyzers)
+
 [![Join the chat at https://gitter.im/DotNetAnalyzers/AsyncUsageAnalyzers](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/DotNetAnalyzers/AsyncUsageAnalyzers?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 [![Build status](https://ci.appveyor.com/api/projects/status/0f0w76hunsj3es8p/branch/master?svg=true)](https://ci.appveyor.com/project/sharwell/asyncusageanalyzers/branch/master)