title: How to show tooltips always on Chart.js 2
body: <p>How can I show tooltips always using Chart.js version 2 (alpha)?</p>
  
  <p>I have tried this <a href="https://stackoverflow.com/questions/25661197/chart-js-doughnut-show-tooltips-always">Chart.js - Doughnut show tooltips always?</a>, but seems that this have changed in this last version.</p>