Emacs: remove ntcmd
Emacs: Remove cdnjs dependency
Emacs: Auto-install req-package if neeeded

init.el is now self-bootstrapping, which is useful on OSX when the Emacs
application doesn't supply an `emacs` binary for `cask`
Emacs: Create package archive query functions

Count packages installed from each archive
Show installed packages from an archive
Emacs: Remove unused package archives

Those last query functions were useful.