For my iOS programming project I been using sneakernet to try to keep the iMac and MacBook project directories synchronized with limited success. While XCode has support for Git and Subversion (and will create an local Git repository for tracking local changes), the instructions on how to do the initial setup. The Apple documentation starts with "Check Out the project from your repository" and is mum on how to import an existing project into a repository.

Well, with some help from http://stackoverflow.com/questions/29599023/how-to-setup-svn-repository-on-xcode-6I now have Subversion running on my iMac and my current projects imported.

So now if I want to work on the road, I do an Update to the MacBook project before I leave, and a Commit when I get home.