PHP Strict Notice fix for get_object()

Hyia,

Not a big deal, just noticed a strict-level notice in the instantiation process for the plugin:

    call_user_func_array() expects parameter 1 to be a valid callback, non-static method Wp_Admin_Style::get_object() should not be called statically on line 406 in file /var/www/wp-includes/plugin.php

Love the plugin, by the way. It's been a big help to me. Thanks for making it!