"styles.css" -> "style.css".

A typo that caused a failed validation.
Escape the title 4 special chars.

This may be considered a cross-site scripting / HTML-injection attack:

* http://perl-begin.org/topics/security/code-markup-injection/

* http://en.wikipedia.org/wiki/Cross-site_scripting .
Merge pull request #3 from shlomif/master

Correct a typo that caused a failed validation.