[![See it for yourself](http://content.screencast.com/users/W1z3k/folders/Jing/media/af054bca-bbbb-4634-8431-eab8a1a04607/2012-01-29_2222.png)](http://jsfiddle.net/KeREY/3/)
A function that takes a file path and changes the indentation overwriting the original content.