This is a simple Patternslib plugin for packery.
If you want to use this pattern stand-alone you will need to build the pat-packery mini-bundle. You will need to have nodejs installed to do this. Just run these commands:
npm install
gulp bower
gulp
This will create a dist/pat-packery.js file you can include in your HTML
files in addition to the standard Patterns bundle:
<script type="text/javascript" charset="utf-8" src="patterns.js"></script>
<script type="text/javascript" charset="utf-8" src="pat-packery.js"></script>