app/views/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<title><%= yield(:title) -%></title>
<%= stylesheet_link_tag 'application', media: 'all' %>
<%= csrf_meta_tags %>
<%= content_for :head %>
<%= google_analytics_code.html_safe %>
</head>
<body>
<%= yield %>
<footer>
<p>Lyrics are by their authors.</p>
<p>Site code is <a href="http://github.com/alxndr/lyrem-ipsum">open at GitHub</a>.</p>
</footer>
<%= requirejs_include_tag 'application' %>
</body>
</html>