Update in the wild section

Fixes handlebars-lang#246

Author: kpdecker

README.markdown

@@ -351,6 +351,10 @@ Handlebars in the Wild
 * Les Hill (@leshill) wrote a Rails Asset Pipeline gem named
   [handlebars_assets](http://github.com/leshill/handlebars_assets).
 * [Gist about Synchronous and asynchronous loading of external handlebars templates](https://gist.github.com/2287070)
+* [Lumbar](walmartlabs.github.io/lumbar) provides easy module-based template management for handlebars projects.
+* [YUI](http://yuilibrary.com/yui/docs/handlebars/) implements a port of handlebars
+
+Have a project using Handlebars? Send us a [pull request](https://github.com/wycats/handlebars.js/pull/new/master)!
 
 Helping Out
 -----------