title: Putting SignIn and SignUp in single page using devise rails
body: <p>I just created a new rails app and added devise to it. Having different page for each sign in (users/sign_in) and sign up (users/sign_up) page is given by devise itself.  But i want to add both sign in and sign up form in single page of my custom controller (welcome/home).</p>
  
  <p>And also I am really confused on how users controller is mapped to pages in views/devise/..and want to bring sign in and sign out pages under one roof.  </p>
  
  <p>Can anyone let me know directions on how to modify code to achieve this.</p>