added homepage view to views.py in bookshelf module

bookshelf/views.py

 from django.shortcuts import render
+from django.views import generic
+# from .models import
 
 # Create your views here.
+
+
+class HomePageView(generic.TemplateView):
+    template_name = 'bookshelf/home.html'
+
+
+class BookListView(generic.ListView):
+    pass
+
+class AuthorListView(generic.ListView):
+    pass