gistfile1.php

<?php
/**
 * Implements hook_theme().
 */
function radius_settings_theme() {
  //Override the theme default page.tpl.php
  return array(
    "page__settings" => array(
      "template" => "page--settings",
      "path" => drupal_get_path('module', 'radius_settings') . '/theme',
    )
  );
}