To get started you should implement this code block in your <head> tag in index.html file

<script>
              (function (q, u, a, c, k, i, o) {
                q[a] =
                  q[a] ||
                  function () {
                    (q[a].q = q[a].q || []).push(arguments);
                  };
                i = u.createElement(c);
                i.async = 1;
                i.id = 'quack-license';
							  i.src = "<https://sdk.thequack.ai/p/verify.min.js>";
                i.setAttribute(a, k);
                o = u.getElementsByTagName(c)[0];
                o.parentNode.insertBefore(i, o);
              })(window, document, 'quack', 'script', '<YOUR TOKEN>'); 
</script>

for us to be able to identify users

window.quack.identify({ // must
	id: 'your user id in your app / utm session id ', // must - any thing you wish
	...props // whatever you want to pass - optional 
})

You are ready to go!