docs: function config (args, cb) {
    var action = args.shift()
    switch (action) {
      case "set": return set(args[0], args[1], cb)
      case "get": return get(args[0], cb)
      case "delete": case "rm": case "del": return del(args[0], cb)
      case "list": case "ls": return list(cb)
      case "edit": return edit(cb)
      default: return unknown(action, cb)
    }
  }