add ref.

zencoding.vim

@@ -4,6 +4,8 @@
 " Last Change: 19-Feb-2010.
 " Version: 0.1
 " WebPage: http://github.com/mattn/zencoding-vim
+" Description: vim plugins for HTML and CSS hi-speed coding.
+" SeeAlso: http://code.google.com/p/zen-coding/
 " Usage:
 "
 "  Type abbreviation