Adding relevant Brunch plug-in modules

Hi @addyosmani. Thanks for the [JavaScript Application Architecture On The Road To 2015](https://medium.com/@addyosmani/javascript-application-architecture-on-the-road-to-2015-d8125811101b) article. I found this list of tools linked from the article and wanted to help improve the list of relevant tooling going into the new year. // @paulmillr @es128 @yavorsky