title: Angular2 How to downgrade ng-bootstrap
body: <p>Hi I am currently using ng-bootstrap  from the link below</p>
  
  <p><a href="https://ng-bootstrap.github.io/#/home" rel="nofollow noreferrer">https://ng-bootstrap.github.io/#/home</a></p>
  
  <p>But since this latest version of ng-bootstrap has dependencies of Angular4,</p>
  
  <p>I am getting bunch of bootstrap errors that i didn't get before.</p>
  
  <p>Is there any way where I can avoid updating to Angular4 and downgrade ng-bootstrap that could suuport angular2. </p>
  
  <p>I've already used many of these bootstrap so i can't go through changing the bootstrap  </p>
  
  <p>How can I achieve this? </p>