Unknown class _TtC720GeminiCollectionView in Interface Builder file.

Hi.
Thanks for this awesome framework.
I implemented Gemini using Carthage.
I get this error at run time:
Unknown class _TtC720GeminiCollectionView in Interface Builder file.

On first line of this code:
```
        collectionView.gemini
            .circleRotationAnimation()
            .radius(400)
            .rotateDirection(.clockwise)
    }
```
