Added code for Load file into Book. Any file selected from the List of
files from SDCARd can be viewed back onto MainActivity Bookshelf as a
Toast message.
Repeating previous commit
Repeating commit
Fixed merge conflict
Merge branch 'master' of https://github.com/ClayJohnson/Bookshelf.git
Trying to commit after Merge conflict had been fixed.
Added code to implement 'Load' button, 'Load Into Bookshelf' button and 
'Category' button. Added book cover images.