Enable native project use (#5)

Author: Scottj1s

nuget/Microsoft.Windows.WinMD.nuspec

@@ -17,7 +17,7 @@
   <files>
     <file src="..\LICENSE"/>
     <file src="..\src\**\*.h"/>
-    <file src="Microsoft.Windows.WinMD.props"/>
+    <file src="Microsoft.Windows.WinMD.props" target="build\native"/>
     <file src="readme.txt"/>
   </files>
 </package>

nuget/Microsoft.Windows.WinMD.props

@@ -6,12 +6,12 @@ Copyright (C) Microsoft Corporation. All rights reserved.
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
     <PropertyGroup>
-        <WinMDPackageDir>$([System.IO.Path]::GetFullPath($(MSBuildThisFileDirectory)))</WinMDPackageDir>
+        <WinMDPackageDir>$([System.IO.Path]::GetFullPath($(MSBuildThisFileDirectory)))..\..\</WinMDPackageDir>
     </PropertyGroup>
 
     <ItemDefinitionGroup>
         <ClCompile>
-            <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(WinMDPackageDir)</AdditionalIncludeDirectories>
+            <AdditionalIncludeDirectories>$(WinMDPackageDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
         </ClCompile>
     </ItemDefinitionGroup>