title: Angular 2: How to add and update the meta tags dynamically from a component (like title service)
body: <p>I am very new to Angular 2. I need to set up the meta tags like og: description and all from a component. I have no idea how to dynamically update the meta tags, also add new tags to the index.html from a particular component.</p>
  
  <p>Please help.</p>
  
  <p>PS: I read about title service, but that is to update the title only.</p>