Added menu display, with directory contents in box.
Also added different ebook functions to finish later. Will use them once I get to them. Calling it a night, but will add menu selecting and hopefully the ability to read text files tomorrow.
TODO: See why files of type "Unicode text, UTF-8 text" works but "Unicode text, UTF-8 (with BOM) text, with CRLF line terminators" does not.
TODO: add menu to select works, add line numbering, scrolling ability, and bookmarks