Added Zepto Builder

Author: boye

README.md

@@ -60,6 +60,7 @@
     + [Cartero](https://github.com/rotundasoftware/cartero): A modular client side asset manager.
     + [Mod](https://github.com/modulejs/modjs) is a task-based workflow tooling for web, it help developers quickly build robust and high-performance web applications.
     + [Wraith](https://github.com/BBC-News/wraith) is a screenshot comparison tool.
+    + [Zepto Builder](http://github.e-sites.nl/zeptobuilder/) Generate a custom version of Zepto that just includes the modules you need
 + Weekly & Daily Resources
     + [HTML5 Weekly](http://html5weekly.com/)
     + [HTML5 Bookmarks](http://html5bookmarks.com/)