title: Capybara expect page to have content more than once
body: <p>Does anybody know how to find if a page has a text more than once?</p>
  
  <p>I know I can use </p>
  
  <pre><code>expect(page).to have_content("my-text")
  </code></pre>
  
  <p>to check if text appears once. However, I need something like</p>
  
  <pre><code>expect(page).to have_content("my-text").twice
  </code></pre>
  
  <p>(which doesn't work).</p>
  
  <p>I'm using capybara v2.1.0.</p>