added favicon.

closed #6
Merge pull request #7 from hayashima/feature-favicon

Feature favicon
Code highlighter was exchanged.

syntax -> coderay
Merge pull request #9 from hayashima/fix-highlight

Code highlighter was exchanged.
The version of capistrano was fixed.

ver 2.15.4
fixed convert ascii-8bit to utf-8.
Merge pull request #11 from hayashima/fix-utf8

fixed convert ascii-8bit to utf-8.
Merge pull request #12 from hayashima/develop

Develop