Populated the Author and Books models with 15 records each.

+Created Author and Books classes. The Author class contains fields to keep track of the author's first and last name, age, nationality, and bio. The Books class contains fields to keep track of the book's title, author, publisher, publishing year, ISBN, and blurb.
+The admin.py file was edited to create admin panels for the 2 classes in models.py
- haven't removed the placeholder for views.py under bookshelf. This will be edited later on.

The Django project, ysovera_reading, and the app, bookshelf, was created. Set-up for the project and app was also done such as editing the site-wide and app settings files and the site-wide and app urls.py files.