made examples use the new more efficient torrent_info constructor

examples/simple_client.cpp

@@ -60,11 +60,7 @@ int main(int argc, char* argv[])
 	{
 		session s;
 		s.listen_on(std::make_pair(6881, 6889));
-	
-		std::ifstream in(argv[1], std::ios_base::binary);
-		in.unsetf(std::ios_base::skipws);
-		entry e = bdecode(std::istream_iterator<char>(in), std::istream_iterator<char>());
-		s.add_torrent(torrent_info(e), "./");
+		s.add_torrent(torrent_info(argv[1]), "./");
 
 		// wait for the user to end
 		char a;