Middleman Blog Twitter card integration

gistfile1.txt

    <% if current_article %>
      <title><%= "#{current_article.title}" %></title>
      <meta name="twitter:card" content="summary">
      <meta property="twitter:creator" content="@alexbaldwin">
      <meta name="twitter:title" content="<%= truncate(current_article.title, length: 70) %>">
      <meta name="twitter:image" content="<%= "#{current_article.data.image}" %>">

      <meta name="twitter:description" content="<%= truncate(strip_tags(current_article.summary), length: 200) %>">
      <meta name="twitter:domain" content="<%= "http://www.alexbaldwin.com#{current_article.url}" %>">
    <% else %>
      <title><%= "Alex Baldwin, Product Designer" %></title>
    <% end %>