diff --git a/README.md b/README.md
index bef21312..f0c3ed6c 100644
--- a/README.md
+++ b/README.md
@@ -2,14 +2,22 @@
 TensorFlow.NET provides .NET Standard binding for [TensorFlow](https://www.tensorflow.org/).
 
 [![Join the chat at https://gitter.im/publiclab/publiclab](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/sci-sharp/community)
-![Tensorflow.NET](https://ci.appveyor.com/api/projects/status/tensorflow-net-p7kmsjyo10ey?svg=true)
+[![Tensorflow.NET](https://ci.appveyor.com/api/projects/status/tensorflow-net-p7kmsjyo10ey?svg=true)](https://ci.appveyor.com/project/Haiping-Chen/tensorflow-net)
+[![codecov](https://codecov.io/gh/SciSharp/NumSharp/branch/master/graph/badge.svg)](https://codecov.io/gh/SciSharp/NumSharp)
+[![NuGet](https://img.shields.io/nuget/dt/TensorFlow.NET.svg)](https://www.nuget.org/packages/TensorFlow.NET)
 
 TensorFlow.NET is a member project of [SciSharp](https://github.com/SciSharp) stack.
 
 ![tensors_flowing](docs/assets/tensors_flowing.gif)
 
 ### How to use
-Download the pre-compiled dll [here](tensorflowlib) and place it in the bin folder.
+Download the pre-compiled dll [here](tensorflow.so) and place it in the working folder. 
+This is only need for Linux and Mac OS, and already packed for Windows.
+
+Install TensorFlow.NET through NuGet.
+```sh
+PM> Install-Package TensorFlow.NET
+```
 
 Import tensorflow.net.
 ```cs
diff --git a/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj b/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj
index 5f35afcb..5d7a067d 100644
--- a/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj
+++ b/src/TensorFlowNET.Core/TensorFlowNET.Core.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
@@ -37,15 +37,13 @@
   </ItemGroup>
 
   <ItemGroup>
-    <None Update="tensorflow.dll">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
     <None Update="Operations\op_list_proto_array.bin">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
     <None Update="Operations\op_list_proto_math.bin">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <Content CopyToOutputDirectory="PreserveNewest" Include="./runtimes/win-x64/native/tensorflow.dll" Link="tensorflow.dll" Pack="true" PackagePath="runtimes/win-x64/native/tensorflow.dll" />
   </ItemGroup>
 
 </Project>
diff --git a/src/TensorFlowNET.Core/runtimes/win-x64/native/tensorflow.dll b/src/TensorFlowNET.Core/runtimes/win-x64/native/tensorflow.dll
new file mode 100644
index 00000000..d667cffa
Binary files /dev/null and b/src/TensorFlowNET.Core/runtimes/win-x64/native/tensorflow.dll differ
diff --git a/test/TensorFlowNET.UnitTest/GraphTest.cs b/test/TensorFlowNET.UnitTest/GraphTest.cs
index 2e813ad8..edc8f5bd 100644
--- a/test/TensorFlowNET.UnitTest/GraphTest.cs
+++ b/test/TensorFlowNET.UnitTest/GraphTest.cs
@@ -356,5 +356,11 @@ namespace TensorFlowNET.UnitTest
             //graph.Dispose();
             s.Dispose();
         }
+
+        [TestMethod]
+        public void c_api_ImportGraphDef_WithReturnOutputs()
+        {
+
+        }
     }
 }