Feature Request: Javascript for Viz (d3.js) about marp

[koaning]

This is amazing.

<!-- $theme: default -->

# Better Slides with Marp

<iframe src="http://koaning.io/theme/iframes/predict.html" height="300px" width="100%" frameBorder="0"></iframe>

### Vincent D.Warmerdam - @fishnets88 - koaning.io

---

Div below here.
<div id="viz"></div>
Above here. 

<script src="http://cdnjs.cloudflare.com/ajax/libs/d3/3.4.1/d3.min.js"></script>

<script type="text/javascript">

var sampleSVG = d3.select("#viz")
    .append("svg")
    .attr("width", 100)
    .attr("height", 100);    

sampleSVG.append("circle")
    .style("stroke", "gray")
    .style("fill", "white")
    .attr("r", 40)
    .attr("cx", 50)
    .attr("cy", 50)
    .on("mouseover", function(){d3.select(this).style("fill", "aliceblue");})
    .on("mouseout", function(){d3.select(this).style("fill", "white");});

</script>

---

<iframe src="http://koaning.io/fluctuating-repetition.html" height="300px" width="100%" frameBorder="0"></iframe>

--- 

[koaning]

Wow. Ok. Nevermind.

This feature does work when you add --- at the bottom of that snippet. Otherwise the parser probably does not recognize the end of the file.