Add configspec documentation

uber/configspec.ini

@@ -204,6 +204,11 @@ max_tables = integer(default=4)
 # The max number of badges which a dealer may apply for.
 max_dealers = integer(default=20)
 
+# The number of dealer apps we will accept before auto-waitlisting further
+# applications. If dealer_reg_deadline is also set, we will auto-wailist
+# dealers if either the deadline has passed or this number has been reached.
+# Dealers who have been waitlisted/approved/declined and dealers who do not
+# have to pay are not counted towards this cap. A value of 0 means no cap.
 max_dealer_apps = integer(default=0)
 
 # Number of badges necessary to qualify for the group discount.