title: How to get a Facebook like notification system in rails
body: <p>Hey how to make a notification system like Facebook or diaspora in rails. </p>
  
  <p>I had tried making activity feed but that was not the thing I wanted I want an exactly same feature like this websites have. </p>
  
  <p>I have a simple app Where there are two types of users buyers and sellers </p>
  
  <p>I want to notify the seller whenever a buyer comment on their products.</p>