Add simple doc for todoman

Author: untitaker

docs/tutorials/todoman.rst

@@ -10,4 +10,61 @@ todoman_ is a CLI task manager supporting :doc:`vdir </vdir>`. Its interface is
 similar to the ones of Taskwarrior or the todo.txt CLI app. You can use
 :storage:`filesystem` with it.
 
-.. _todoman: https://hugo.barrera.io/journal/2015/03/30/introducing-todoman/
+.. _todoman: http://todoman.readthedocs.io/
+
+Setting up vdirsyncer
+=====================
+
+For this tutorial we will use NextCloud.
+
+Assuming a config like this::
+
+    [general]
+    status_path = "~/.vdirsyncer/status/"
+
+    [pair calendars]
+    conflict_resolution = "b wins"
+    a = "calendars_local"
+    b = "calendars_dav"
+    collections = ["from b"]
+    metadata = ["color", "displayname"]
+
+    [storage calendars_local]
+    type = "filesystem"
+    path = "~/.calendars/"
+    fileext = ".ics"
+
+    [storage calendars_dav]
+    type = "caldav"
+    url = "https://nextcloud.example.net/"
+    username = ...
+    password = ...
+
+``vdirsyncer sync`` will then synchronize the calendars of your NextCloud_
+instance to subfolders of ``~/.calendar/``.
+
+.. _NextCloud: https://nextcloud.com/
+
+Setting up todoman
+==================
+
+Write this to ``~/.config/todoman/todoman.conf``::
+
+    [main]
+    path = ~/.calendars/*
+
+The glob_ pattern in ``path`` will match all subfolders in ``~/.calendars/``,
+which is exactly the tasklists we want. Now you can use ``todoman`` as
+described in its documentation_ and run ``vdirsyncer sync`` to synchronize the changes to NextCloud.
+
+.. _glob: https://en.wikipedia.org/wiki/Glob_(programming)
+.. _documentation: http://todoman.readthedocs.io/
+
+Other clients
+=============
+
+The following client applications also synchronize over CalDAV:
+
+- The Tasks-app found on iOS
+- `OpenTasks for Android <https://github.com/dmfs/opentasks>`_
+- The `Tasks <https://apps.nextcloud.com/apps/tasks>`_-app for NextCloud's web UI