allow multiple parameters

[hden]

Since JS client allows multiple parameters, perhaps we should allow the same behavior in obj-c?

socket.emit('eventName', 'foo', 'bar', {baz: 'nyan'});

[aldevet]

It actually allows it but it was sending all parameters as one object. Here there's a more elegant solution: https://github.com/pkyeck/socket.IO-objc/pull/208