Embedding Mermaid Diagrams in Jekyll without plugins!

Embed a jekyll diagram by including a javascript file and putting diagram in a <div> object with class mermaid:

graph TD; A-->B; A-->C; B-->D; C-->D;

And the code:

<script src="https://unpkg.com/mermaid@8.0.0/dist/mermaid.min.js"></script>

<div class="mermaid">
graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;
</div>

Adapted from http://kkpattern.github.io/2015/05/15/Embed-Chart-in-Jekyll.html