For information on how to use these files, Simon Owen did a post on Nettuts+:
As well as explaining on his own site:
- http://simonowendesign.co.uk/blog/2012/12/02/mother-effing-dotfiles/
- http://simonowendesign.co.uk/blog/2012/12/11/mac-os-x-osx-dotfiles/
Your dotfiles are how you personalize your system. These are mine. If you're interested in the philosophy behind why projects like these are awesome, you might want to read @holman's post on the subject.