 #   HUBOT_GITHUB_TOKEN
 #   HUBOT_GITHUB_USER
 #   HUBOT_GITHUB_API
+#   HUBOT_RELEASE_DEFAULT_REPO
 #   HUBOT_RELEASE_MAIL_FROM
 #   HUBOT_RELEASE_MAIL_TO
 #   HUBOT_RELEASE_SMTP_HOST

    # env vars
    unless (url_api_base = process.env.HUBOT_GITHUB_API)?
        url_api_base = "https://api.github.com"
    unless (from_email = process.env.HUBOT_RELEASE_MAIL_FROM)?
        from_email = "dan@appneta.com"
    unless (to_email = process.env.HUBOT_RELEASE_MAIL_TO)?
        to_email = "dan@appneta.com"
    unless (smtp_host = process.env.HUBOT_RELEASE_SMTP_HOST)?
        smtp_host = "smtp.sendgrid.net"
    unless (smtp_user = process.env.HUBOT_RELEASE_SMTP_USER)?
        throw new Error("HUBOT_RELEASE_STMP_USER required")
    unless (smtp_pass = process.env.HUBOT_RELEASE_SMTP_PASS)?

            repo = parts[0] + "/" + parts[1]
            pr = parts[2]
        else
            repo = default_repo
            pr = parts[0]

        api_url = "#{url_api_base}/repos/#{repo}/issues/#{pr}"
