title: Including assets in subdirectories with config.assets.precompile in Rails
body: <p>I've got a Rails 3.1.3 application running on Heroku, utilizing S3 for asset hosting via <code>asset_sync</code>.  Included in my <code>app/assets/css</code> directory is a subdirectory with two files: <code>main.css.scss</code> and <code>categories.css.scss</code>.  I have the following line in my <code>production.rb</code>:</p>
  
  <p><code>config.assets.precompile += [ 'admin/main.css.scss', 'admin/categories.css.scss', 'print.css', 'products.css.scss', 'services.css.scss' ]</code></p>
  
  <p>When I push to Heroku, all my assets are precompiled and uploaded with the exception of those two files.  Do I need to perform some sort of dark magic to include those two files in the process?</p>