Initial Xcode 5 compatible plugin

According to [the current released Mac docs for `NSArray`](https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSArray_Class/NSArray.html), `NSArray` has no properties at all.

![image](https://cloud.githubusercontent.com/assets/7505072/4345504/8966250c-40d1-11e4-9ec6-04d375e6b315.png)