Allows to qui switch to a buffer visiting a particular file or directory.

To install:
  (require 'quick-buffer-switch)
  ;; To preserve C-x C-x uncomment next line
  ;; (setq qbs-prefix-key "C-x C-a")
  (qbs-init)

Note that C-x C-c (`save-buffers-kill-terminal') is shadowed.