add forking info; closes jglovier#32

README.md

@@ -4,9 +4,14 @@ Storage place for all my favorite gifs.
 
 ![thumbs up](support/thumbs-up.gif)
 
-
 ## Contributing
 
-Feel free to open a pull request if you have a gif that you really think belongs in here. However, I will only accept images that I think I will personally want to use. 
+Feel free to open a pull request if you have a gif that you really think belongs in here. However, I will only accept images that I think I will personally want to use.
 
 I'm not trying to build a comprehensive storage place for the world's best gifs, just trying to organize all the gifs I personally use. I sync these locally, so I'll be somewhat selective about adding new stuff. That said, feel free to suggest ones you think are awesome, and if I don't accept the PR just fork the repo and add to your own! :thumbsup:
+
+## Curating your own gif library
+
+You can also [fork](https://github.com/jglovier/gifs/fork) this repository to your own account, and have your own gif library. Once you fork to your own account, you can even host your own GH Pages site ([like mine](http://gifs.joelglovier.com/)) by editing or removing the [CNAME](https://github.com/jglovier/gifs/blob/gh-pages/CNAME) file in your fork accordingly.
+
+To update the site index on the GH Pages site, you'll need to run the index build script. Just clone the project to your local machine, open Terminal, and `cd` into the repo. Then, run `script/build_site_index` and commit your changes. Once the new index is commited to your gh-pages branch, it will be live on your site as soon as the CDN updates (usually within a few minutes).