Tweaking man page to better reflect current status

Small tweaks to reflect the recent changes in Subsurface.

Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

subsurface.1

@@ -1,6 +1,6 @@
-.TH subsurface 1 "May 7, 2012"
+.TH subsurface 1 "Dec 15, 2013"
 .SH NAME
-subsurface \- a simple dive log program written in C
+subsurface \- a logbook program for scuba divers
 .SH SYNOPSIS
 .B subsurface
 [options] [FILE...] [\-import] [FILE...]
@@ -8,22 +8,25 @@ subsurface \- a simple dive log program written in C
 .B subsurface
 allows you to manage your dive logs that you can download from your dive computer or import from existing XML files.
 .PP
-The
-.B Dive Profile
-and
-.B Dive List
-tabs can be ripped off from the notebook to create up to three independent windows.
-.PP
-You can click on the the column headings to sort the dives based on this column.
+You can click on the column headings to sort the dives based on this column.
 .PP
 Additional dives that get imported will be assigned numbers if they
 don't already have numbers, are after all currently stored dives and
 the last of those dives is numbered.
+.PP
+For full usage information see Subsurface User Manual, available on-line
+at http://subsurface.hohndel.org/ and locally under Help menu.
 .SH OPTIONS
 .B \-v
 show more output during processing
 .PP
 .B \-\-import
 all further files should be processed as import, not open
+.PP
+.B \-\-help
+command line usage help
+.PP
+.B \-\-version
+print Subsurface version information
 .SH BUGS
-lots. Tell us if you find some.
+If you find bugs, report at http://trac.hohndel.org