FeedBunch-app/app/views/layouts/_header.html.erb
<% cache 'header' do %>
<head>
<title>FeedBunch</title>
<meta name="Description" content="A simple and elegant feed reader.">
<meta keywords="feedbunch,reader,atom,rss,feed,reading">
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta name="mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-capable" content="yes">
<% end %>
<%= stylesheet_link_tag 'application', :media => 'all' %>
<link rel="icon" type="image/png" sizes="192x192" href="<%= image_path 'logo192x192.png' %>">
<link rel="manifest" href="<%= page_path 'manifest.json' %>">
<meta name="theme-color" content="#99cc33">
<%= csrf_meta_tags %>
<%# favicon must be the last element with rel="icon", otherwise favico.js won't work %>
<%= favicon_link_tag 'logo192x192.png', rel: 'apple-touch-icon', type: 'image/png' %>
<%= favicon_link_tag 'favicon.ico' %>
</head>