fix query check with single line SELECT. fixes #3

helper.php

@@ -69,7 +69,7 @@ public function getPDO($dsn = null, $user = null, $pass = null)
      */
     public function executeQuery($query, $dsnalias = null)
     {
-        if (!preg_match('/^select /i', trim($query))) {
+        if (!preg_match('/^select(\s|$)/i', trim($query))) {
             throw new \Exception('For security reasons only SELECT statements are allowed in dbquery');
         }