Update example in overview section

README.md

@@ -74,10 +74,10 @@ Content-Length: 43615855
 Content-Type: application/samlmetadata+xml
 
 $ cat $CACHE_DIR/cget_log.txt
-2017-04-26T16:29:44Z cget.sh requesting resource: http://md.incommon.org/InCommon/InCommon-metadata-preview.xml
-2017-04-26T16:30:09Z conditional_get received response code: 200
-2017-04-26T16:30:10Z conditional_get writing cached content file: /tmp/http_cache/1e6b844a49d1850b82feded72cf83ed7_content
-2017-04-26T16:30:10Z conditional_get reading cached content file: /tmp/http_cache/1e6b844a49d1850b82feded72cf83ed7_content
+2017-04-26T16:29:44Z INFO cget.sh requesting resource: http://md.incommon.org/InCommon/InCommon-metadata-preview.xml
+2017-04-26T16:30:09Z INFO conditional_get received response code: 200
+2017-04-26T16:30:10Z INFO conditional_get writing cached content file: /tmp/http_cache/1e6b844a49d1850b82feded72cf83ed7_content
+2017-04-26T16:30:10Z INFO conditional_get reading cached content file: /tmp/http_cache/1e6b844a49d1850b82feded72cf83ed7_content
 ```
 
 Assuming the resource doesn't change on the server, subsequent requests will return the cached resource. To bypass the network altogether, use the ``-C`` option:
@@ -95,8 +95,8 @@ $ $BIN_DIR/cget.sh -C $url2
 $ echo $?
 1
 $ cat $CACHE_DIR/cget_log.txt | tail -n 2
-2017-04-26T16:39:38Z cget.sh requesting resource: http://md.incommon.org/InCommon/InCommon-metadata-fallback.xml
-2017-04-26T16:39:38Z conditional_get: ERROR: resource not cached: http://md.incommon.org/InCommon/InCommon-metadata-fallback.xml
+2017-04-26T16:39:38Z INFO cget.sh requesting resource: http://md.incommon.org/InCommon/InCommon-metadata-fallback.xml
+2017-04-26T16:39:38Z ERROR conditional_get: resource not cached: http://md.incommon.org/InCommon/InCommon-metadata-fallback.xml
 ```
 
 OTOH, the ``-F`` option forces the return of a fresh resource from the server. If the resource is cached and unchanged on the server (304), such a request will fail, however:
@@ -107,8 +107,8 @@ $ $BIN_DIR/cget.sh -F $url1
 $ echo $?
 1
 $ cat $CACHE_DIR/cget_log.txt | tail -n 2
-2017-04-26T16:41:55Z conditional_get received response code: 304
-2017-04-26T16:41:55Z conditional_get: ERROR: resource not modified: http://md.incommon.org/InCommon/InCommon-metadata-preview.xml
+2017-04-26T16:41:55Z INFO conditional_get received response code: 304
+2017-04-26T16:41:55Z ERROR conditional_get: resource not modified: http://md.incommon.org/InCommon/InCommon-metadata-preview.xml
 ```
 
 The ``-F`` option will work on the other URL, however: