Auto save files in Emacs every N seconds

Let's see if this is a good idea. I've grown used to auto saving
when switching buffers in vim.

That behavior is hard to implement in Emacs, and Stallman shut it down:
http://emacs.1067599.n5.nabble.com/bug-15029-24-3-feature-request-add-window-focus-lost-hook-td294159.html
Turn off autosaving. That didn't work.
Add commands for expanding markdown headers
Get ready to use snippets
Add snippets for todo and note
Make todo and note snippets work in all modes
Remove startup buffer message