Of course! Thanks so much 
Still not 100% how this works as the src I’m using points to a page instead of somewhere in my files where I have saved p5.js, but I used this line in the head tag:
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.8.0/p5.js"></script>
and it’s finally displaying my code, thanks!