Adding annotators

FYI, if you are using Guzzle, then the code needs to be changed to this if you want to add specific annotators:

define('CURLPROPERTIES' , '"annotators":"ner","prettyPrint":"true"');

        $client = new \GuzzleHttp\Client();
        $res = $client->request('POST', CURLURL.'?properties={'.CURLPROPERTIES.'}', [
            'body' => $text
        ]);

