update packet_release

packet_release.sh

@@ -22,6 +22,7 @@ cp -rf html $packetpath/
 
 tar -czvf $packetpath.tar.gz -C /tmp/ $packetname
 
+mkdir -p ./release
 mv $packetpath.tar.gz ./release/
 
 echo "Release package is in ./release/$packetname.tar.gz"