message: Only attempts to connect when the environment variable for Redis is present
diff: @@ -25,6 +25,8 @@ retry_strategy = (options) ->
  # Setup redis client
  @connect = () ->
  + return unless REDIS_URL?
  +
  @client = redis.createClient(REDIS_URL, { retry_strategy: retry_strategy })
  @client.on 'error', (err) ->
  # Log + ignore the error; start up without Redis
  