Update index.js

modify work() 
make that can create  like this
- assert
   * assert.md
   * what.md

Author: fox dan

lib/summary/index.js

@@ -83,23 +83,24 @@ function Summary(options) {
             if (!_.includes(ignores, key)) {
                 if (_.isObject(n)) {
 
-                    // It means folderName == subFileName, for example: */assets/assets.md or */Assets/assets.md
-                    if (_.isString(n[key]) || _.isString(n[key.toLowerCase()])) {
-                        var file = n[key] || n[key.toLowerCase()];
-                        desc += _.repeat(' ', step) + formatCatalog(key, '-') + file;
-
-                        // Mark it to skip
-                        skip = key;
-                    }
-
                     // The file is `readme.md`
-                    else if (_.isString(n['readme']) || _.isString(n['Readme']) || _.isString(n['README'])) {
+                    if (_.isString(n['readme']) || _.isString(n['Readme']) || _.isString(n['README'])) {
                         var readmeDir = n['readme'] || n['Readme'] || n['README'];
                         desc += _.repeat(' ', step) + formatCatalog(key, '-') + readmeDir;
                     } else {
                         desc += _.repeat(' ', step) + "- " + prettyCatalogName(key) + "\n";
                     }
 
+                    // It means folderName == subFileName, for example: */assets/assets.md or */Assets/assets.md
+                    if (_.isString(n[key]) || _.isString(n[key.toLowerCase()])) {
+                        var file = n[key] || n[key.toLowerCase()];
+                        step += 2;
+                        desc += _.repeat(' ', step) + formatCatalog(key, '*') + file;
+                        step -= 2;
+
+                        // Mark it to skip
+                        skip = key;
+                    }
                     // Start a loop
                     step += 2;
                     work(n);