Update TODO list

README.md

@@ -1,10 +1,11 @@
 
 ## TODO
 
-- handle all hook points
-- extract all relevant information for each hook point
+- handle DHCPv6 hook points
+- ask for a new `lease_expired` hook point
 - document environment variables
+- change some variables from integer to their textual representation
+  (e.g. `QUERY4_TYPE=3` → `QUERY4_TYPE=DHCPREQUEST`)
 - allow to configure which hook points will trigger the script
 - take into account the return code of the script to set the status
   of the callout.
-- add proper logging (WIP)