Update README.md

Author: malcommac

README.md

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   <img src="banner.png" width=300px alt="ScrollStackController" title="ScrollStackController">
 </p>
 
-<p align="center"><strong>Easy scrollable complex layouts in UIKit</strong></p>
+<p align="center"><strong>Easy scrollable layouts in UIKit</strong></p>
 
 Create complex scrollable layout using UIViewControllers or plain UIViews and simplify your code!