This software stopped working after 30 July 2016 when Habitica's deprecated API v2 was removed.
Information about the API change can be found at Application Programming Interface.
Command-line client for importing your Remember the Milk tasks into your HabitRPG To Do's. When you complete your HabitRPG To Do's and run the client again, it marks those tasks complete in Remember the Milk! Start getting XP for completing those tasks, and stop entering them manually!
npm install -g habitrpg-todo-sync