Tweak example

README.md

@@ -70,15 +70,16 @@ xml_location=http://md.incommon.org/InCommon/InCommon-metadata.xml
 resource_url=https://incommon.org/federation/metadata/all_IdP_DisplayNames.csv
 ```
 
-Suppose there is an automated process that transforms the SAML metadata at ``xml_location`` into the CSV file at ``resource_url``. Specifically, let's suppose the following process runs every hour on www.incommon.org:
+Suppose there is an automated process that transforms the SAML metadata at ``xml_location`` into the CSV file at ``resource_url``. Specifically, let's suppose the following process runs every hour on incommon.org:
 
 ```Shell
 # the XSL script and the shell script are included in the md-transforms repository
 xsl_file=$LIB_DIR/list_all_IdP_DisplayNames_csv.xsl
 resource_file=/tmp/all_IdP_DisplayNames.csv
 $BIN_DIR/http_xsltproc.sh -F -o "$resource_file" "$xsl_file" "$xml_location"
 exit_code=$?
-if [ $exit_code -ne 0 ]; then
+[ $exit_code -eq 1 ] && exit 0  # short-circuit if 304 response
+if [ $exit_code -gt 1 ]; then
 	echo "ERROR: http_xsltproc.sh failed with status code: $exit_code" >&2
 	exit $exit_code
 fi