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-Dos. When you complete your HabitRPG To-Dos 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