added action

book_list/src/actions/index.js

@@ -1,3 +1,8 @@
 export function selectBook(book) {
-  console.log('A book has been selected:', book.title);
+  // selectBook is an ActionCreator, it needs to return an action,
+  // an object with a type property.
+  return {
+    type: 'BOOK_SELECTED',
+    payload: book
+  };
 }

book_list/src/containers/book-list.js

@@ -7,7 +7,12 @@ class BookList extends Component {
   renderList() {
     return this.props.books.map((book) => {
       return (
-        <li key={book.title} className="list-group-item">{book.title}</li>
+        <li
+          key={book.title}
+          onClick={() => this.props.selectBook(book)}
+          className="list-group-item">
+          {book.title}
+        </li>
       );
     });
   }