API - Basic API calls

Your post will look like this:
```php
    function post(){

        $queryArray = array(TABLE_PREFIX, $category_id);

        api_backbone((object)array(
            "request_type" => HTTP_DELETE,
            "access_level" => INSTRUCTOR_ACCESS_LEVEL,
            "query" => "INSERT INTO %scourse_cats(cat_name, cat_parent, theme) VALUES('%s', %d, '%s')",
            "queryArray"  => array(TABLE_PREFIX, $_POST["name"], $_POST["parent_id"] OR 0, $_POST["theme"]),
            "$returnedIDName" => "cat_id"
        ));
    }
```

Notice that this function will set $response to be an object with one key-value-pair. where name is cat_id and value will be a freshly created ID