<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <title>
    {% if page.title %}
      {{ page.title }} | {{ site.title }}
    {% else %}
      {{ site.title }}
    {% endif %}
  </title>
  <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}">

  <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Lato:300">
  <link rel="stylesheet" href="{{ '/assets/css/usfwds.css' | prepend: site.baseurl }}">
  <link rel="stylesheet" href="{{ '/assets/css/main.css' | prepend: site.baseurl }}">

  <link rel="shortcut icon" type="image/x-icon" href="{{ '/assets/img/favicon.ico' | prepend: site.baseurl }}" />

  <link rel="canonical" href="{{ page.url | replace:'index.html','' | prepend: site.baseurl | prepend: site.url }}">
  <link rel="alternate" type="application/rss+xml" title="{{ site.title }}" href="{{ "/feed.xml" | prepend: site.baseurl | prepend: site.url }}" />
</head>

<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <title>
    {% if page.title %}
      {{ page.title }} | {{ site.title }}
    {% else %}
      {{ site.title }}
    {% endif %}
  </title>
  <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}">

  <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Lato:300">
  <link rel="stylesheet" href="{{ '/assets/css/usfwds.css' | prepend: site.baseurl }}">
  <link rel="stylesheet" href="{{ '/assets/css/main.css' | prepend: site.baseurl }}">

  <link rel="shortcut icon" type="image/x-icon" href="{{ '/assets/img/favicon.ico' | prepend: site.baseurl }}" />

  <link rel="canonical" href="{{ page.url | replace:'index.html','' | prepend: site.baseurl | prepend: site.url }}">
  <link rel="alternate" type="application/rss+xml" title="{{ site.title }}" href="{{ "/feed.xml" | prepend: site.baseurl | prepend: site.url }}" />
  <script>
    if (/^www\./.test(window.location.hostname)) {
      window.location = window.location.href.replace('www.', '');
    }
  </script>
</head>

Add www => root redirect
Add www => root redirect
