How to activate WP Content Crawler

In the file wp-content-crawler.php, add this code to the beginning of the plugin’s content (after name, version, developer…):

 namespace WPCCrawler; 
if(!class_exists('WPTSLMClient')) { 
class WPTSLMClient { public function __construct($productName, $productId, $type, $apiUrl, $
pluginFilePath, $textDomain){} 
public function setUrlHowToFindLicenseKey($url){} 
public function isUserCool() {return true;} public function setIsProductPageCallback($callback){} 
} 
}