Flipboard snaps the page to the direcion of the last touch gesture. E.g. If the last gesture was negative (bottom to top), always flip to the next page, regardless of how the gesture started, or how quick the finger was moving.

The previous text size was too big to be seen on devices like Galaxy Nexus.

Added the constructors required for the layout editor.
Added custom attribute to control orientation from XML.
Added Activity and layout to Demo with an example of FlipViewController in XML layouts.