Add JS MythBusters to showcase

[Kikobeats]

I migrated from docpress, very happy!

Not related question, but I don't know why search is not enabled:
https://github.com/Kikobeats/js-mythbusters/blob/master/docs/index.html#L27

[QingWei-Li]

You forgot to install the search plugin. 😊

<script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
<!-- here -->
<script src="//unpkg.com/docsify/lib/plugins/search.min.js"></script>

https://docsify.js.org/#/plugins?id=full-text-search

[Kikobeats]

oh thanks!

[jrappen]

@Kikobeats

Btw you could also extend docsify with KaTeX for the math sections in your docs should you want to extend those:

⚠️ order matters below!

<!-- index.html -->

...

  <link rel="stylesheet" href="//unpkg.com/katex/dist/katex.min.css">
  <link rel="stylesheet" href="//unpkg.com/docsify/lib/themes/vue.css">

...

<script src="//unpkg.com/katex/dist/katex.min.js"></script>
<script src="//unpkg.com/docsify/lib/docsify.min.js"></script>

<!-- docsify plug-ins after docsify main -->

...

[Kikobeats]

oh, thanks! Could be awesome if you can convert this into a PR 😄