Update TODO list

 - Delete done entry
 - Add other tasks

TODO.md

@@ -1,4 +1,7 @@
 # Things to do
 
- + Verify that rc file and tmp file exist
+ + Use tmp file in /tmp
+ + Make tmp file emplacement configurable
+ + Put json file in real emplacement
+ + Add command to modify configuration file
  + Documentation ;-)