Update README.md

Author: odan

README.md

@@ -31,6 +31,20 @@ composer require odan/database
 ## Usage
 
 ```php
+require_once 'vendor/autoload.php';
+
+
+$dsn = "mysql:host=127.0.0.1;dbname=test;charset=utf8";
+$username = 'root';
+$password = '';
+
+$options = [
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+    PDO::ATTR_PERSISTENT => false,
+    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+    PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8 COLLATE utf8_unicode_ci"
+];
+
 $db = new \Odan\Database\Connection($dsn, $username, $password, $options);
 
 $users = $db->select()