ioping: update dates and changelog

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>

changelog

@@ -17,3 +17,7 @@ since v0.6
  - automatic git-based versioning
  - Windows/MinGW port
  - DragonFlyBSD port
+
+since v0.7
+ - OpenBSD port
+ - switch to IEEE 1541-2002 units: MiB/s

ioping.1

-.TH IOPING "1" "Aug 2012" "" "User Commands"
+.TH IOPING "1" "Dec 2013" "" "User Commands"
 .SH NAME
 ioping \- simple disk I/O latency monitoring tool
 .SH SYNOPSYS

ioping.c

 /*
  *  ioping  -- simple I/0 latency measuring tool
  *
- *  Copyright (C) 2011 Konstantin Khlebnikov <koct9i@gmail.com>
+ *  Copyright (C) 2011-2013 Konstantin Khlebnikov <koct9i@gmail.com>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by