fix old style gist url not found issue
Merge branch 'fix-gist-plugin' of git://github.com/aleiphoenix/octopress into aleiphoenix-fix-gist-plugin

* 'fix-gist-plugin' of git://github.com/aleiphoenix/octopress:
  fix old style gist url not found issue
Clean up Gist redirection.
Error handling FTW
Merge pull request #1385 from imathis/aleiphoenix-fix-gist-plugin

Handle Gists returning 302's