Adding support for automatically reloading the list files of dnsbl-lookup

[Sander-Kastelein]

I'd like this feature very much for my current project, I only require dnsbl-lookup once and the sysadmin would like to edit the JSON files without having to reboot the whole node process.

[hassansin]

That's a good point but watching files will also push callbacks in event loop and prevent nodejs from exiting normally. I think you should maintain a separate files for list instead of editing the default list files. Then call the lookup methods with the list argument each time those files have changed.