And add a sample code to test show(_:sender:) in ContentVC.
`FloatingPanelController.show(_:sender:)` can block 'Show' segue in a
content view controller. 'Show' segue should not be handled by
'FloatingPanelController`. So I replace this method.
The bottom of a scroll view tracked by a floating panel controller must align
the bottom of a screen when `FloatingPanelController.contentInsetAdjustmentBehavior`
is set to `always`.
The floating panel controller can't resolve this issue, but the
workaround is much easy in the content view controller.
So I stop auto-rounding corners in content view on iOS 10.
Shin Yamamoto