Updated doc

README.md

@@ -31,6 +31,7 @@ Usage
 sxiv supports the following command-line options:
 
     -d           Scale all images to 100%, but fit large images into window
+		-F           Use size-hints to make the window fixed/floating
     -f           Start in fullscreen mode
     -g GEOMETRY  Set window position and size
                  (see section GEOMETRY SPECIFICATIONS of X(7))

sxiv.1

@@ -3,7 +3,7 @@
 sxiv \- Simple (or small or suckless) X Image Viewer
 .SH SYNOPSIS
 .B sxiv
-.RB [ \-dfhpqsvZ ]
+.RB [ \-dFfhpqsvZ ]
 .RB [ \-g
 .IR GEOMETRY ]
 .RB [ \-z
@@ -20,6 +20,10 @@ manager.
 .B \-d
 Scale all images to 100%, but fit large images into window.
 .TP
+.B \-F
+Make the window fixed/floating by setting the minimum and maximum width/height
+size-hints to the window width/height.
+.TP
 .B \-f
 Start in fullscreen mode.
 .TP