Add keybindings to browse gists in gist.el

gist-browse.el

;; Add `b' binding to `gist-list' to browse to the current gist.
(defun gist-browse-current ()
  (interactive)
  (gist-browse (tabulated-list-get-id)))

(defun gist-browse (id)
  (interactive)
  (browse-url (concat "https://gist.github.com/" id)))

(define-key gist-list-menu-mode-map "b" 'gist-browse-current)

;; Add `C-c C-b' binding to browse to the gist currently being edited.

(defun gist-mode-browse ()
  (interactive)
  (gist-browse gist-id))

(define-key gist-mode-map "\C-c\C-b" 'gist-mode-browse)