added info regarding adding showcase to the menu

README.md

@@ -555,7 +555,7 @@ enableBio: true
 ---
 ```
 
-3. Finally, Make a file per project.
+3. Make a file per project.
 
 `root/content/showcase/hugo/my-awesome-project.md`.
 
@@ -572,6 +572,16 @@ thumb: feature3/css3.png # relative path in static/images
 ---
 ```
 
+4. Finally, make a menu at your root/config/_default/menus.en.toml file
+
+```toml
+[[main]]
+  identifier = "showcase"
+  name = "Showcase"
+  url = "showcase"
+  weight = 7
+```
+
 ## Multi Language
 
 The default language of this theme is English. If you want to use another language, follow these steps