README : add Isotope submodule

README.mdown

@@ -31,6 +31,28 @@ jekyll --server --auto
 
 Then view the live site at [http://localhost:4000](http://localhost:4000).
 
+## Including Isotope as a submodule
+
+The _module_ branch has just `jquery.isotope.js` and `jquery.isotope.min.js`, perfect for adding to your repo as a [submodule](http://dropshado.ws/post/20058825150/git-submodules).
+
+``` bash
+git submodule add https://github.com/desandro/isotope.git
+cd isotope/
+git checkout module
+git pull origin module
+cd ../
+git submodule update --init
+```
+
+Then you can reference `isotope/jquery.isotope.min.js` within your own project.
+
+To pull in the lastest version of the isotope submodule:
+
+``` bash
+cd isotope/
+git pull origin module
+```
+
 ## Changelog
 
 View the [commit history](https://github.com/desandro/isotope/commits/master/jquery.isotope.js) for a complete robust list of changes to the script.
@@ -53,4 +75,4 @@ View the [commit history](https://github.com/desandro/isotope/commits/master/jqu
 
 * * *
 
-Copyright (c) 2011-2012 David DeSandro / Metafizzy LLC
+Copyright (c) 2011-2012 David DeSandro / Metafizzy LLC