<tkst-line message="takusuta :) https://takusuta.com" image="./linebutton_82x20.png"></tkst-line>
<script src="..../riot.min.js"></script>
<script src="..../tkst-line.min.js"></script>
<script>
  riot.mount('tkst-line');
</script>
 
or
 
<tkst-line></tkst-line>
<script src="..../riot.min.js"></script>
<script src="..../tkst-line.min.js"></script>
<script>
  riot.mount('tkst-line', {
    message: "takusuta :) https://takusuta.com",
    image: "./linebutton_82x20.png"
  });
</script>