Fix the IB issue when we use the library with Carthage

[NipponGaijin]

Hello, i add "github "HamzaGhazouani/HGCircularSlider"" to my Cartfile, update dependencies and add framework in "general>linked frameworks and libraries", but when i change class on my view, view does not display slider.

[HamzaGhazouani]

Hey @NipponGaijin, it's related to that Carthage#355
I will try a fix in the next release