message: docs(aio): add ng-japan 2018 to events
  ng-japan 2018 will be held at June 16 in Tokyo, Japan!
  PR Close
diff: <td>Vienna</td>
  <td>May 16-18, 2018</td>
  </tr>
  + <!-- ngJapan-->
  + <tr>
  + <th><a href="https://ngjapan.org/en.html" title="ng-japan">ng-japan</a></th>
  + <td>Tokyo, Japan</td>
  + <td>Jun 16, 2018</td>
  + </tr>
  <!-- AngularConnect-->
  <tr>
  <th><a href="http://angularconnect.com" title="AngularConnect">AngularConnect</a></th>
  