title: Rails config.assets.precompile setting to process all CSS and JS files in app/assets
body: <p>I wish to precompile all the CSS and JS files in my project's <code>app/assets</code> folder. I do NOT want to precompile everything in vendor/assets or lib/assets, only the dependencies of my files as needed.</p>
  
  <p>I tried the following wildcard setting, but it incorrectly precompiles everything. This results in lots of extra work and even causes a compilation failure when using bootstrap-sass.</p>
  
  <pre><code>config.assets.precompile += ['*.js', '*.css']
  </code></pre>
  
  <p>What is my best bet to only process my files in <code>app/assets</code>? Thanks!</p>