Merge pull request #3 from thr1llseek3r/master

Fix scrollToItem forces crash add debugPrint

Sources/FSPagerView.swift

@@ -500,7 +500,7 @@ open class FSPagerView: UIView,UICollectionViewDataSource,UICollectionViewDelega
     @objc(scrollToItemAtIndex:animated:)
     open func scrollToItem(at index: Int, animated: Bool) {
         guard index < self.numberOfItems else {
-            assertionFailure("index \(index) is out of range [0...\(self.numberOfItems-1)]")
+            debugPrint("index \(index) is out of range [0...\(self.numberOfItems-1)]")
 			return
         }
         let indexPath = { () -> IndexPath in