Update gist tag url to githubusercontent.com
fix script_url_for url bug
Merge pull request #1567 from howiehu/fix-gist-url-bug

Update gist tag url to githubusercontent.com
Refactoring addSidebarToggler()
Merge pull request #1586 from simonewebdesign/master

Refactoring addSidebarToggler()
Merge branch 'master' of https://github.com/imathis/octopress into source
updating octopress