Added a simple cover page for E-book. 

Added button to change pages and text wrap

Long text are split into many pages and pages can be changed using a button. Page numbers are also added at the bottom right hand corner. The texts are being wrapped according to the size of the E-paper display so that sentence or word will not be cut off. Users can choose and set their preferred font size in the ino. file. Font Size choices: 16, 20, 24. Orientation of the E-book can also be chosen by the user. Orientation choices: 0^o, 90^o, 180^o, 270^o  . When the last page is reached, it will return to page 1 after the button is pressed again.

Display text with font size 16