message: [docs] add StatsD setup instructions
diff: @@ -550,3 +550,20 @@ same server.
  return "Ok"
  BLUEPRINTS = [simple_page]
  +
  +StatsD logging
  +--------------
  +
  +Superset is instrumented to log events to StatsD if desired. Most endpoints hit
  +are logged as well as key events like query start and end in SQL Lab.
  +
  +To setup StatsD logging, it's a matter of configuring the logger in your
  +``superset_config.py``.
  +
  +..code ::
  +
  + from superset.stats_logger import StatsdStatsLogger
  + STATS_LOGGER = StatsdStatsLogger(host='localhost', port=8125, prefix='superset')
  +
  +Note that it's also possible to implement you own logger by deriving
  +``superset.stats_logger.BaseStatsLogger``.
  