Merge pull request mwaterfall#315 from dfmuir/master

Fixed Issue mwaterfall#304 "Zooming issue in iOS 8"

Author: mwaterfall

MWPhotoBrowser/Classes/MWZoomingScrollView.m

@@ -346,6 +346,11 @@ - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL
 	[_photoBrowser hideControlsAfterDelay];
 }
 
+- (void)scrollViewDidZoom:(UIScrollView *)scrollView {
+    [self setNeedsLayout];
+    [self layoutIfNeeded];
+}
+
 #pragma mark - Tap Detection
 
 - (void)handleSingleTap:(CGPoint)touchPoint {