Added link to home page on search page

src/SearchPage.js

@@ -1,11 +1,12 @@
 import React, { Component } from 'react';
+import { Link } from 'react-router-dom'
 
 class SearchPage extends Component {
   render() {
     return (
       <div className="search-books">
         <div className="search-books-bar">
-          <a className="close-search" onClick={() => this.setState({ showSearchPage: false })}>Close</a>
+          <Link className="close-search" to="/">Close</Link>
           <div className="search-books-input-wrapper">
             <input type="text" placeholder="Search by title or author"/>
           </div>