title: How can I use friendly ID in Rails like mysite.com/[USERNAME]
body: <p>How can I use friendly URLs on my Rails application ?
  All I need is to make available the following url format</p>
  
  <p>mysite.com/company1
  mysite.com/user123
  mysite.com/user1234
  mysite.com/newton.garcia
  mysite.com/company-name</p>
  
  <p>Can anyone help ?</p>