Fix old site-search method of Google

See
https://github.com/imathis/octopress/commit/514ed5eb9f6bb91a6f3288febf3c2ba892a9b693.
Fix the way of loading the local copy of jQuery

Deleted the dot at the beginning of the path in the script that called the local copy of jQuery.

Signed-off-by: ChaYoung You <yousbe@gmail.com>
Merge pull request #68 from yous/octopress-upstream

Follow upstream Octopress