add privacy info

README.md

@@ -2,6 +2,15 @@
 
 Discord bot to give questionable elevator therapy
 
+## Privacy
+
+This bot does not persistently store any data except for the numerical
+IDs of each server it's in, and the numerical ID of the channel it
+creates for itself in each server.  It does not make use of any data
+except for the list of channels.  It does not read message
+contents. It only creates one channel for itself, and does not
+interact at all outside of that channel.
+
 ## Discord setup
 
 Required permissions:
@@ -9,8 +18,7 @@ Required permissions:
 - Read messages/view channels
 - Send messages
 
-
-## Setup
+## Bot setup
 
     git clone https://git.xeno.science/xenofem/mikage-bot
     cd mikage-bot