Place code/style in *any* folder

[jpap]

Consider compiling assets based on file extension, not the source directory name.

A bonus would combine/minify groups of code/style into the one file if the source files are in the same source folder. The combined filename would match the source parent folder name.

e.g.

+ assets/
\- images/
   |- logo.png
   |- background.jpg
\- js/
   \- viewer/
      |- directives.coffee
      |- controllers.coffee
   \- site/
      |- directives.coffee
      |- controllers.coffee
\- css/
   \- viewer/
      |- base.sass
      |- fonts.sass
      |- menus.sass
   \- site/
      |- base.sass
      |- fonts.sass
\- swf/
   |- ieviewer.swf

would result in compiled assets

+ public/
\- images/
   |- logo.png
   |- background.jpg
\- js/
   |- viewer.js
   |- site.js
\- css/
   |- viewer.css
   |- site.css
\- swf/
   |- ieviewer.swf

This would be especially helpful when constructing multiple single-page apps.