Move pages under tldr, lint run.sh, update docs

tldr/todo

@@ -0,0 +1,37 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# todo
+
+> A simple, standards-based, cli todo manager.
+> More information: <https://todoman.readthedocs.io>.
+
+- List startable tasks:
+
+`todo list --startable`
+
+- Add a new task to the work list:
+
+`todo new {{thing_to_do}} --list {{work}}`
+
+- Add a location to a task with a given ID:
+
+`todo edit --location {{location_name}} {{task_id}}`
+
+- Show details about a task:
+
+`todo show {{task_id}}`
+
+- Mark tasks with the specified IDs as completed:
+
+`todo done {{task_id1 task_id2 ...}}`
+
+- Delete a task:
+
+`todo delete {{task_id}}`
+
+- Delete done tasks and reset the IDs of the remaining tasks:
+
+`todo flush`