title: bypass application.html.erb in Rails app
body: <p>I have an application.html.erb file which sets out layout for every pages in my app (header, footer etc.) like a typical Rails app.</p>
  
  <p>However, I would like to have a landing page which I don't want to use this file. How should I bypass application.html.erb?</p>
  
  <p>Thank you.</p>