Fixed wrong package name

Author: adriangodong

README.md

@@ -3,7 +3,7 @@
 This repository contains the open source SDK for integrating [Medium's OAuth2 API](https://github.com/Medium/medium-api-docs) into your .NET app.
 
 [![Build status](https://ci.appveyor.com/api/projects/status/u1lmowf82gdckxmo?svg=true)](https://ci.appveyor.com/project/adriangodong/medium-sdk-dotnet)
-[![NuGet](https://img.shields.io/nuget/v/SimpleObjectFactory.svg)](https://www.nuget.org/packages/SimpleObjectFactory/)
+[![NuGet](https://img.shields.io/nuget/v/MediumSdk.svg)](https://www.nuget.org/packages/MediumSdk/)
 
 Install
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