#532 setup .net standard nuget dependencies

Author: justcoding121

src/Titanium.Web.Proxy/Titanium.Web.Proxy.nuspec

@@ -14,9 +14,15 @@
     <copyright>Copyright &#x00A9; Titanium.  All rights reserved.</copyright>
     <tags></tags>
     <dependencies>
-      <dependency id="StreamExtended" version="1.0.179" />
-      <dependency id="Portable.BouncyCastle" version="1.8.2" />
-      <dependency id="BrotliSharpLib" version="0.3.1" />
+	  <group>
+		  <dependency id="StreamExtended" version="1.0.179" />
+		  <dependency id="Portable.BouncyCastle" version="1.8.2" />
+		  <dependency id="BrotliSharpLib" version="0.3.1" />
+	  </group>
+	  <group targetFramework="netstandard2.0">
+		  <dependency id="Microsoft.Win32.Registry" version="4.4.0" />
+		  <dependency id="System.Security.Principal.Windows" version="4.4.1" />
+	  </group>
     </dependencies>
   </metadata>
   <files>