[Add]_posts/2013-09-11-hello-world.md
[Add] about.md
[Add] _posts/2013-09-11-how-to-access-github-with-hosts.md
[Update]_posts/2013-09-11-how-to-access-github-with-hosts.md
[Update] _posts/2013-09-11-how-to-access-github-with-hosts.md
[Update] footer
[Update] add highlight for code
[Add] _posts/2013-09-11-code-snippet-highlighting-with-jekyll.md