app/views/home/index.html.erb
<div class="jumbotron">
<h1>WTG!? </h1>
<h2>What the gem!?</h2>
<p>Got a new project and have no idea about <strong>what the hell</strong> is every library in your Gemfile? </p>
<p><%= link_to 'Start scanning a Gemfile!', new_scan_path, class: 'btn btn-primary btn-lg' %></p>
</div>