Managing Static Content with CodeIgniter

As part of my application, I have a couple of static, marketing-related pages that promote the app and present a lot of text content.

I need a simple solution to manage and update the content of these pages (basically multiple text areas per page) and maybe generate a dynamic menu based on these static pages.

I don't need a full-blown CMS and neither do I want to reinvent the wheel by developing my own CMS. Just a simple library or class that I can quickly throw in to handle the described situation.

Would appreciate your advice how you deal with content management in the described situation with CodeIgniter.