text: import React, { Component } from 'react';
  
  
  export default class BookList extends Component {
    renderList() {
      return this.props.books.map((book) => {
        return (
          <li key={book.title} className="list-group-item">{book.title}</li>
        );
      });
    }
    render() {
      return (
        <ul className="list-group col-sm-4">
          {this.renderList()}
        </ul>
      )
    }
  }
  