Fixed the get_absolute_url function to work with the templates

Fixed the classes and functions and implemented ListView and DetailView

title says all

fixed the string return function to return the title specifically

Changed the model field of year_published to an integer field

Troubleshoots and migrations

Edited the model field of "blurb" and implemented inner functions.

troubleshooting errors encountered while running the server

added "bookshelf" to the installed apps

Updated views.py so that the server may run

fixed a problem with the implementation where it was implemented inside a class

Updated project level urls.py

Made migrations for the models

Created the app level urls.py

Added admin classes for the models and registered them to the site.

Added the Books and Author classes and added their respective models.

initialized Django, and created the app folder within the repository. Also added the README for contributor info