To start using Themalizer, you have to require_once it in functions.php at the top of your code as following:

require_once 'Themalizer/autoload.php';

If you are in development mode, add the following line:

Themalizer::$development = true;

as it skips some initializations for production environment such as some security headers.

For securing your theme, go ahead and copy the following index.php file into your theme directory and any directory in your theme.

+-- Themalizer
|	+-- index.php