title: format date using moment with custom format
body: <pre><code>var format = 'EEEE, D 'de' MMMM 'de' Y'
  moment(date).format(format);
  </code></pre>
  
  <p>I have a custom format and use it with <code>moment</code> and got this</p>
  
  <pre><code>exp: segunda-feira, 2 de janeiro de 2017
  act: Segunda-feira, 2 11 Janeiro 11 2017
  </code></pre>
  
  <p>Note the placeholder <code>de</code> in the pattern actually got parsed .. 
  Is there a way for me to get the date in the expected format <code>segunda-feira, 2 de janeiro de 2017</code> using moment?</p>