Server.add now supports arrays

"Fixes" #22 without breaking the current splat system. I feel like this might be considered more "sane" by most JS developers who like to code in a more traditional style than splatting arguments out (which, honestly, with the insane (30k+ item array from a JSON call) dataset sizes I was dealing with, would have been a mess).

Does modify a browser prototype at the moment, I could refactor that if you're terribly opposed to it.