Before running parse operation on search results page it checks now if there are any books to parse.

README.md

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+## Installation 
+
+Place this in the composer.json.
+
+```composer 
+{
+  "repositories": [{
+    "type": "composer",
+    "url": "https://satis.techtube.pl"
+  }]
+}
+```
+Then execute
+
+```bash
+composer require techtube/bookinfo:"1.0.4"
+```
+
+## Usage
+
+To get information about the book by the link:
+
+```php
+<?php
+
+include_once 'vendor/autoload.php';
+
+$searcher = new \Techtube\Bookinfo\BookFinder();
+$data = $searcher->byUrl('https://lubimyczytac.pl/ksiazka/5008411/oni');
+
+print_r($data);
+```
+
+To search the book by phrase:
+```php
+<?php
+
+include_once 'vendor/autoload.php';
+
+$searcher = new \Techtube\Bookinfo\BookFinder();
+$data = $searcher->search('jack reacher');
+
+print_r($data);
+```