Embedding version control within App

I am building an application to learn cocoa, basically its a notes keeping app. But i wanted to build a functionality where i can see what happen to the document over time, i think using subversion/version control software can help me in this task. But how i can embed it within an ap开发者_StackOverflow中文版p?

Git might be a better choice and there is a partial Objective-C implementation at http://github.com/schacon/objective-git.

The subversion book has section on this topic.