Add NuGet pkg command for new MyGet.Signed package

Author: mythz

build/build-sn.proj

@@ -175,5 +175,8 @@
     <MakeDir Directories="$(NuGetPackageDir)/ServiceStack.OrmLite.MySql.Signed/lib/net40" Condition="!Exists('$(NuGetPackageDir)/ServiceStack.OrmLite.MySql.Signed/lib/net40')" />
     <Copy SourceFiles="%(MySqlFiles.Identity)" DestinationFolder="$(NuGetPackageDir)/ServiceStack.OrmLite.MySql.Signed/lib/net40" />
 
+    <Exec Command="&quot;$(NuGetPath)&quot; pack &quot;$(NuGetPackageDir)/ServiceStack.OrmLite.MySql.Signed/servicestack.ormlite.mysql.signed.nuspec&quot; -OutputDirectory &quot;$(NuGetPackageDir)&quot; -Version $(PackageVersion) -Symbols"
+            LogStandardErrorAsError="true" />
+
   </Target>
 </Project>