Add "Must disable Administer site configuration" to Configuration Page

When setting up this module, I banged my head against the wall for a while because I could not get the default permissions supplied by this module to work. It turns out, I needed to disable Drupal core's default permission for "Administer site configuration" before having the granular control provided by this module (which makes absolute sense, but I am not sure if it was because it was late or I am an idiot, or both). Either way, might I suggest adding a quick blurb to the configuration page to dummy proof it for guys like me to the effect of...

Must disable Drupal Core's "Administer site configuration" under the system permissions to use the following default permissions provided by this module.