The app does the following:

1. Search a list of books using the
2. Display the list of books with their cover images and details
3. Replace ActionBar with Toolbar
4. Use SearchView to search for books with a title
5. Show ProgressBar before each network request
6. Add a detail view to display more information about the selected book from the list
7. Use a share intent to recommend a book to friends

To achieve this, there are five different components in this app:

1. BookClient - Responsible for executing the API requests and retrieving the JSON
2. Book - Model object responsible for encapsulating the attributes for each individual book
3. BookAdapter - Responsible for mapping each Book to a particular view layout
4. BookListActivity - Responsible for fetching and deserializing the data, configuring the adapter and providing a search interface
5. BookDetailActivity - Responsible for providing book detail view and share intent.