title: how to identify which version of angular (1,2 or 4) is used?
body: <h3>How to indentify angular version from angular js source file</h3>
  <p>I have found different source file version at <a href="https://code.angularjs.org/" rel="nofollow noreferrer">https://code.angularjs.org/</a>
  like 1.6.X ,1.5.x, 1.4.x, 1.3.x and 1.2.x but how to identify which version of angular (1,2 or 4) is used ?</p>
  <p>Thanks &amp; Regards
  Mithlesh Singh</p>