Page numbers missing

[Raltux]

Now, epub3 displays all ebooks on my device, seems like some background scanning is done, in most cases it seems like a hang, as no hour glass is displayed meanwhile. To support control of page turning, I suggest page numbers and bookmarks. Cheers

[Alberto Pettarin]

Please be aware of https://github.com/pettarin/epub3reader#important-notice-2015-07-27