title: javascript rspec testing times out
body: <p>I am using <code>capybara</code> and <code>rspec</code> to test my rails app. Precisely, I test some javascript code. In fact, running test launches <code>firefox</code> (how can I configure this ?). First, the page loading in firefox browser is very long and then I get this error </p>
  
  <pre><code>Failure/Error: visit root_path
       Net::ReadTimeout:
         Net::ReadTimeout
  </code></pre>
  
  <p>How can I fix this ?</p>