Now the user have the power to add custom attachment folder.
showing proper error message when attached file is absent at the attachment directory.
added more CamelCase method to the response.Response class.
Fixed issubclass checking error for different contents at response.Response.send method.
Fixed status_code method for response.Response class not working.
Fixed response.Response.type method.
Renamed response.Response.set_staus and response.Response.setStatus methods to response.Response.send_status and response.Response.sendStatus responsively.