Fix links in config.php file.
Params::get('controller') behaviour is now like Rails. It returns controller name in snake_case and in plural.

// Visit http://localhost:8000/users/
Params::get('controller'); //-> "users" instead of "UsersController"

// Visit http://localhost:8000/product_tags/
Params::get('controller'); //-> "product_tags" instead of "ProductTagsController"
Update docs of Parameters class in README.md