reorder layout selection examples to occur in the order that the code does,...

reorder layout selection examples to occur in the order that the code does, and provide more detail on why each selection is made

actionpack/lib/abstract_controller/layouts.rb

@@ -81,11 +81,12 @@ module AbstractController
   #   class EmployeeController < BankController
   #     layout nil
   #
-  # The InformationController uses "bank_standard" inherited from the BankController, the VaultController overwrites
-  # and picks the layout dynamically, and the EmployeeController doesn't want to use a layout at all.
-  #
-  # The TellerController uses +teller.html.erb+, and TillController inherits that layout and
-  # uses it as well.
+  # In these examples:
+  # * The InformationController will use the "bank_standard" layout, which is inherited from BankController
+  # * The TellerController will follow convention and use +app/views/layouts/teller.html.erb+
+  # * The TillController will inherit the layout from TellerController and use +teller.html.erb+ as well
+  # * The VaultController will pick a layout dynamically by calling the <tt>access_level_layout</tt> method
+  # * The EmployeeController will not use a layout
   #
   # == Types of layouts
   #