update module description with something more useful. Additionally ad…

…ded explanation at the top of the header.

modules/extra/away.cpp

@@ -7,6 +7,11 @@
  *
  * Quiet Away and message logger
  * Author: imaginos <imaginos@imaginos.net>
+ *
+ * I originally wrote this module for when I had multiple clients connected to ZNC. I would leave work and forget to close my client, arriving at home
+ * and re-attaching there someone may have messaged me in commute and I wouldn't know it until I would arrive back at work the next day. I wrote it such that
+ * my xchat client would monitor desktop activity and ping the module to let it know I was active. Within a few minutes of inactivity the pinging stops and 
+ * the away module sets the user as away and logging commences.
  */
 
 #define REQUIRESSL
@@ -475,5 +480,5 @@ void CAwayJob::RunJob()
 	}
 }
 
-NETWORKMODULEDEFS(CAway, "You don't need this module, ZNC works ok without it")
+NETWORKMODULEDEFS(CAway, "Adds auto-away functionality with logging, and subsequent notification of messages when reconnecting" );