changed nuget name to pugixml without lib prefix

scripts/nuget.autopkg

 nuget{
 	nuspec{
-		id = libpugixml;
+		id = pugixml;
 		version : 1.6.0.1;
 		title: XML parser library in C++;
 		authors: {Arseny Kapoulkine};
-		owners: {Ivan Gagis};
+		owners: {Arseny Kapoulkine};
 		licenseUrl: "http://pugixml.org/license.html";
 		projectUrl: "http://pugixml.org/";
 		iconUrl: "https://github.com/zeux/pugixml/logo.svg";