title: Favicon is not getting displayed in production even after clearing cache
body: <p>Am using Ruby-on-Rails 3.1. I have placed my <code>favicon.ico</code> in a public folder. Then I included the link in my layout file as follows:</p>
  
  <pre><code>&lt;link rel="shortcut icon" href="alphaodb.herokuapp.com/favicon.ico" /&gt;
  </code></pre>
  
  <p>I also tried,</p>
  
  <pre><code>&lt;%= favicon_link_tag '/favicon.ico'%&gt;
  </code></pre>
  
  <p>In Chrome it is getting displayed in development, but not in production.</p>
  
  <p>In Firefox it is not getting displayed in both development or production.</p>
  
  <p>I cleared the cache also. I know it is asked many times in this site itself, but still nothing works for me could any help me in this?</p>