title: How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?
body: <p>Sprockets tends to be quite verbose in the (dev) log by default under Ruby on Rails 3.1 (RC1):</p>
  
  <pre><code>Started GET "/assets/application.css" for 127.0.0.1 at 2011-06-10 17:30:45 -0400
  Compiled app/assets/stylesheets/application.css.scss  (5ms)  (pid 6303)
  
  
  Started GET "/assets/application.js" for 127.0.0.1 at 2011-06-10 17:30:45 -0400
  Compiled app/assets/stylesheets/default.css.scss  (15ms)  (pid 6303)
  
  ...
  Started GET "/assets/default/header_bg.gif" for 127.0.0.1 at 2011-06-10 17:30:45 -0400
  Served asset /default/header_logo.gif - 304 Not Modified  (7ms)  (pid 6303)
  Served asset /default/header_bg.gif - 304 Not Modified  (0ms)  (pid 6246)
  Served asset /default/footer_bg.gif - 304 Not Modified  (49ms)  (pid 6236)
  ...
  </code></pre>
  
  <p>I'd like to either reduce the level of verbosity or disable it altogether.</p>
  
  <p>I'm assuming there is a clean way to disable or reduce the verbosity of the logging by adding a config line in either <code>environment.rb</code> or <code>development.rb</code> similar to <code>config.active_record.logger = nil</code> which silences ActiveRecord SQL statements.</p>