Add note about what first line should be for timelog parser script

pomodoroprompt.py

@@ -80,6 +80,7 @@ def record_task(whatdid, start, end=None):
     if end is None:
         end = datetime.now(pytz.utc)
     with open('timelog.csv', 'a', newline='') as csvfile:
+        # TODO make first line started, recorded, description
         timewriter = csv.writer(csvfile)
         timewriter.writerow([start, end, whatdid])