Right Copy Header Settting.

We should use **Build Phase - Copy Files** to copy headers, Archiving and Header Reference will be working fine.

Or you will need to manually copy the header to your project (like the PrettySample did).

With this patch, we don't need to manually copy that.

Just include header like this:

```objc
#import <iOSHierarchyViewer/iOSHierarchyViewer.h>
```