update about page
update README.md, add LICENSE
rm 2013-01-27-markdown-howto.md
new post: starter
new post 2014-04-09-Blog-on-Github-with-Jekyll.md
new post: 2014-04-29-port-channel-and-bonding
update post: add install jekyll on gentoo
update post: issue with port-channel
new post: 2014-06-11-netns-beginning.md
css: bigger and darker font
css: add border for code block
new post: 2014-06-17-watch-kernel-function-by-kprobe-or-systemtap.md
new post: 2014-06-19-install-firefox-manually.md
css: biger font for headers
css: adjust hr, move split line under title
change tagline, adjust sidebar
new post: 2014-07-04-add-vlan-tag-through-bridge.md
adjust parser config: smarter and support tables

- no_intra_emphasis: do not parse emphasis inside of words.
- tables: parse tables, PHP-Markdown style
- fenced_code_blocks: parse fenced code blocks, PHP-Markdown style.
  Blocks delimited with 3 or more `~` or backticks will be considered as code
- autolink: parse links even when they are not enclosed in `<>` characters.
css: adjust table colors
new post: 2014-07-12-Study-Linux-Team.md