Added some code for reminders but most of its commented out.

app/models/Reminder.php

@@ -57,6 +57,7 @@ class Reminder extends Ardent
      * action_uri: where to go when the user wants to do this?
      * text: full text to present to user
      * amount: any relevant amount.
+     * model: id of relevant model.
      *
      * @param $value
      *