Making SourceKit not freak out about self.object.count being called

When using SwiftyJSON in an app i'm playing with, SourceKit was freaking out about self.object.count for some reason. Modifying the code to just use `self.arrayValue.count` and `self.dictionaryValue.count` instead seems to stop it freaking out. It's more lines of code but it makes SourceKit happy so it's worth it.