app/views/layouts/application.html.erb
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title><%= content_for?(:title) ? yield(:title) : "Discovery" %></title>
<%= csrf_meta_tags %>
<!-- Le HTML5 shim, for IE6-8 support of HTML elements -->
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js" type="text/javascript"></script>
<![endif]-->
<%= stylesheet_link_tag "application", :media => "all" %>
</head>
<body>
<%= yield %>
<!-- Javascripts
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<%= javascript_include_tag "application" %>
</body>
</html>