Update usage and add some TODO comments

sway/wallpaper.pl

@@ -1,5 +1,10 @@
 #!/usr/bin/env perl
 
+# TODO: configure systemD logging
+# TODO: refactor sloppy use of global variables
+# TODO: clean up debugging output
+# TODO: license, etc.
+
 use strict;
 use warnings;
 use POSIX;
@@ -29,8 +34,12 @@ are currently enabled will be set.\n
 --daemon=N	Configures the wallpaper to be periodically rotated for all
 -d N		of the given outputs. N indicates the number of seconds between
                 each rotation, if provided (default: 300).\n
+--nocrop        Don't crop a selection from the image. Instead, pass the whole
+-n              image to swaybg and let it handle the scaling\n
 --help		This menu
--h\n");
+-h\n
+You can send SIGUSR1 to force the daemon to reload immediately. Rotation timer
+will be reset.\n");
         exit(0);
 }
 
@@ -296,7 +305,6 @@ if ($settings{daemon}) {
         #setpgrp;
         #setsid;
         umask 0;
-        # TODO: configure systemD logging
 }
 
 ################################################################################
@@ -331,4 +339,3 @@ if (scalar(@e)) {
 }
 
 exit(0);
-