an addition to readme

README.md

@@ -10,3 +10,13 @@ mysql -u other_user -p some_empty_database < sql/schema.sql
 ``` 
 - Rename `config.example.php` to `config.php`
 - Specify the DB connection details in the config.php file
+
+## How to create an admin account 
+Let's assume that your desired password is "adminpass123" and login is "admin". First, we should generate a hash for your password: 
+`php -r "echo password_hash('adminpass123', PASSWORD_BCRYPT) . PHP_EOL;"`
+Copy the hash and put it to the `users` table in DB: 
+`mysql -u other_user -p some_empty_database`
+```
+INSERT INTO users (username, password_hash)
+VALUES ('admin', 'hash_value');
+```