Added comments for changing the log level

doc/logging/logger.md

@@ -4,4 +4,4 @@ To invoke the bluesky logger, import as `from ibex_bluesky_core.logger import lo
 `logger.blueskylogger.warning("Message to be logged")`
 The logger utilizes a `TimedRotatingFileHandler` defined in the `logging.conf` file that rolls over the log at midnight.
 
-The default logging level is defined at `INFO`.
+The default logging level is defined at `INFO`. This means that events of lesser severity will not be logged. To change the default level, change level attribute of logger_blueskycore in the `logging.conf`