applied Neale Pickett's xprop status reading patch, updated README and dwm.1 accordingly

README

@@ -40,7 +40,7 @@ like this in your .xinitrc:
 
     while true
     do
-        echo `date` `uptime | sed 's/.*,//'`
+        xsetroot -name "`date` `uptime | sed 's/.*,//'`"
         sleep 1
     done | dwm