Update README.md

Add section about possible uses for the script

README.md

@@ -2,6 +2,11 @@
 
 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.
+* *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
 To run this script, you must have installed and globally available:
 * `git` ( [git/git](https://github.com/git/git) | http://www.git-scm.com )