post: add emacs user guide

Signed-off-by: Micky Ching <mickyching@gmail.com>
post: add emacs magit guide

Signed-off-by: Micky Ching <mickyching@gmail.com>
post: add emacs org-mode guide

Signed-off-by: Micky Ching <mickyching@gmail.com>
post: add linux kernel coding style

Signed-off-by: Micky Ching <mickyching@gmail.com>
post: update fix

Signed-off-by: Micky Ching <mickyching@gmail.com>
post: add 2015 holiday schedule

Signed-off-by: Micky Ching <mickyching@gmail.com>