Add help about how to find “root”

Author: SteveBarnett

sites/en/intro-to-rails/setting_the_default_page.step

@@ -16,7 +16,7 @@ steps {
   step "Add a root route" do
     message "Open the file `config/routes.rb` in an editor (In the InstallFest yesterday, we suggested that you install and use **Sublime Text** as your editor)."
 
-    message "Search the file for **root**, it should be near the top if you are using Rails 4."
+    message "Search the file for **root**, it should be near the top if you are using Rails 4. You can use Sublime Text's search: look for **Find...** in the **Find** menu."
 
     message "Uncomment the line that contains the example command by removing the `#` sign in front of it, and change it to read `root 'topics#index'`. When you are done the line should look like this:"