Clean up expressjs org

[dougwilson]

So while responding to #71 I also realized that there is something on the TC backlog that ideally should get done at some point: go through the repositories in the expressjs org (https://github.com/expressjs) and determine which ones are actually active and which ones need to be retired in some way. For example, a repository in the org that hasn't been touched since 2013 maybe should be archived or similar (there are several of these).