yahoo/arrow — pull request #159 by ericmedem (2013-12-30 20:09:59+00:00)
Title: set logging level to ERROR and hooked up log4js

Users don't need to see info level messages. Error might still be useful.

Also hooked up the missing log4js.

Recommend trickling down runtime log level configuration from command line, however log level interpretations may differ between express and arrow.