Step 0: Add purplecoat-min.js along with jQuery. <script type="text/javascript" src="https://code.jquery.com/jquery-2.1.3.min.js"></script> <script type="text/javascript" src="http://ellekasai.github.io/purplecoat.js/purplecoat.min.js"></script> Step 1: Add data-purplecoat="foo" and data-purplecoat-label="Hello!" to any element. <img data-purplecoat="foo" data-purplecoat-label="Hello!" src="http:/
