Implement book thumbnail creation
Add epub library
Implement book cover logic
Refactor book detail fragment
Refactor at book adapter
Implement DbxBook model to store Book & DbxPath in the same object and resultant classes refactor
Implement sort functions inside book model. Refactor adapter to ArrayAdapter to update list content with notifyDataSetChanged() method
Merge pull request #7 from vicfran/feature/book-sort

Feature book sort
Merge pull request #8 from vicfran/develop

Merge develop into master