update README.md and add the offline mode

Author: laniakea2006

lib/printUtil.js

@@ -37,7 +37,7 @@ const populateQueueValueHelp = async function (_, req) {
             req.results[index] = { ID: item.qname };
         });
         req.results.$count = resp.data.length;
-        } else {
+    } else { // Offline / Console Mode - Mocked printer queues
             const offlineQueues = [
             { ID: 'DEFAULT_PRINTER' },
             { ID: 'HP_LASERJET_PRO' },
@@ -133,12 +133,11 @@ const print = async function (_, req) {
             logger.info(`Document sent to print queue ${qname}`);
             return req.info(200, `Document sent to print queue ${qname} \n 
                     No. of copies requested: ${numberOfCopies}`);
-                } else {
-            // Offline / Console Mode
-            docsToPrint.forEach((doc) => {
-                logger.info(`Document ${doc.fileName} with object key ${doc.objectKey} and content length ${doc.content.length} has been sent to print queue ${qname}`);
-            });
-        }
+    } else { // Offline / Console Mode
+        docsToPrint.forEach((doc) => {
+            logger.info(`Document ${doc.fileName} with object key ${doc.objectKey} and content length ${doc.content.length} has been sent to print queue ${qname}`);
+        });
+    }
 }
 
 module.exports = { print, populateQueueValueHelp };