Embed an image of sample output in README.md

Makefile

@@ -61,6 +61,22 @@ index: www/index.html-top www/index.html-bottom
 	(cd www; if [ -L labelnation.tar.gz ]; then rm labelnation.tar.gz; fi)
 	(cd www; VN=`cat ../vn.tmp`; ln -sf labelnation-$${VN}.tar.gz labelnation.tar.gz)
 
+web-example:
+	@./labelnation -t avery-5167 --show-bounding-box -l \
+                       -i examples/web-site-sample.txt      \
+	               --font-size 10.0                     \
+	               -o www/web-site-sample.ps
+	@echo "You may need to adjust /etc/ImageMagick-6/policy.xml"
+	@echo "on your system for this command to work.  See..."
+	@echo ""
+	@echo "https://stackoverflow.com/questions/52998331/"
+	@echo "imagemagick-security-policy-pdf-blocking-conversion"
+	@echo ""
+	@echo "...for more information.  (Then after converting,"
+	@echo "use Gimp->Tools->Transform Tools->3D Transform"
+	@echo "to rotate the image as needed.)"
+	@convert www/web-site-sample.ps www/web-site-sample.png
+
 samples:
 	@echo "Generating PostScript in examples/ directory..."
 	@echo "Trying lines-1.txt..."

README.md

@@ -17,6 +17,8 @@ the ability to define your own standards.  It even accepts input files
 with multiple addresses (so you can run a snail-mailing list,
 whoo-whee!).
 
+![sample image, rotated](www/web-site-sample-3d-rotated-small.png)
+
 If you read this far, you probably want to know how to use it.  You
 can find out more by running this command (at a Unix-like command
 prompt, assuming you have Python 3 installed):

examples/web-site-sample.txt

+
+
+       Kersnootz, Inc.
+
+       121 N. LaSalle Street, Suite 507
+
+       Chicago, IL  60602  USA
+
+       Sol 3, Orion Arm, MW, Local Group
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