Start local jekyll server (edited by Srid) - http://oremacs.com/2015/02/01/blogging-about-blogging/

jekyll-serve.el

(defun jekyll-serve ()
  (interactive)
  (let* ((default-directory
          (if (string-match "_posts/$" default-directory)
              (directory-parent default-directory)
            default-directory))
         (buffer (if (get-buffer "*jekyll*")
                     (switch-to-buffer "*jekyll*")
                   (ansi-term "/bin/bash" "jekyll")))
         (proc (get-buffer-process buffer)))
    (term-send-string proc "jekyll serve\n")
    (sit-for 3)
    (browse-url "http://127.0.0.1:4000")))
    
(defun directory-parent (dir)
  (unless (equal "/" dir)
    (file-name-directory (directory-file-name dir))))