Add "documents" use case to examples list.

As suggested by Karl Voit.

README.md

@@ -5,6 +5,7 @@ A bash script to watch a file or folder and commit changes to a git repo
 ##What to use it for?
 That's really up to you, but here are some examples:
 * **config files**: some programs auto-write their config files, without waiting for you to click an 'Apply' button; or even if there is such a button, most programs offer you no way of going  back to an earlier version of your settings. If you commit your config file(s) to a git repo, you can track changes and go back to older versions. This script makes it convenient, to have all changes recorded automatically.
+* **document files**: if you use an editor that does not have built-in git support (or maybe if you don't like the git support it has), you can use gitwatch to automatically commit your files when you save them, or combine them with the editor's auto-save feature to fully automatically and regularly track your changes
 * *more stuff!* If you have any other uses, or can think of ones, please let us know, and we can add them to this list!
 
 ##Requirements
@@ -36,4 +37,4 @@ The `<username>` bit should be replaced with your username or that of any other
 Please also note that if either of the paths involved contains spaces or special characters, you need to escape them accordingly; if you don't know how to do that, the internet will help you, or feel free to ask here or contact me directly.
 
 ##Feedback
-If you have feedback, comments or questions, please feel free to use the full range of interaction: contact me, fork the repo, use the issue tracker, etc. :)
+If you have feedback, comments or questions, please feel free to use the full range of interaction: contact me, fork the repo, use the issue tracker, etc. :)