title: How to do dropdown item on navbar with material angular
body: <p>I'm using Angularjs with googles Material Angular library <a href="https://material.angularjs.org/" rel="nofollow">https://material.angularjs.org/</a></p>
  
  <p>They have drop down items in the navbar on their site, but I can't find any object or example to make one of my own.</p>
  
  <p>How can I achieve this?</p>
  
  <p>Thank you!</p>