NuGet updates

.nuget/directxtk12_desktop_2015.nuspec

@@ -35,7 +35,7 @@ VertexTypes - structures for commonly used vertex data formats
 WICTextureLoader - WIC-based image file texture loader</description>
         <releaseNotes>Matches the October 17, 2019 release on GitHub.</releaseNotes>
         <projectUrl>http://go.microsoft.com/fwlink/?LinkID=615561</projectUrl>
-        <iconUrl>https://github.com/Microsoft/DirectXTK12/wiki/X_jpg.jpg</iconUrl>
+        <icon>images\icon.jpg</icon>
         <license type="expression">MIT</license>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <copyright>© Microsoft Corporation. All rights reserved.</copyright>
@@ -62,5 +62,7 @@ WICTextureLoader - WIC-based image file texture loader</description>
 
         <file src=".nuget/directxtk12_desktop_2015.targets" target="build\native" />
       
+        <file src=".nuget/icon.jpg" target="images\" />
+
     </files>
 </package>

.nuget/directxtk12_uwp.nuspec

@@ -35,7 +35,7 @@ VertexTypes - structures for commonly used vertex data formats
 WICTextureLoader - WIC-based image file texture loader</description>
         <releaseNotes>Matches the October 17, 2019 release on GitHub.</releaseNotes>
         <projectUrl>http://go.microsoft.com/fwlink/?LinkID=615561</projectUrl>
-        <iconUrl>https://github.com/Microsoft/DirectXTK12/wiki/X_jpg.jpg</iconUrl>
+        <icon>images\icon.jpg</icon>
         <license type="expression">MIT</license>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <copyright>© Microsoft Corporation. All rights reserved.</copyright>
@@ -73,6 +73,8 @@ WICTextureLoader - WIC-based image file texture loader</description>
         <file target="lib\x64\Release" src="Bin\Windows10_2017\x64\Release\*.pdb" />
 
         <file src=".nuget/directxtk12_uwp.targets" target="build\native" />
+
+        <file src=".nuget/icon.jpg" target="images\" />
       
     </files>
 </package>