Add a link to the MDN SVG docs

[justingolden21]

Hi, I absolutely LOVE this project!

I think it would be neat to include this link:

https://developer.mozilla.org/en-US/docs/Web/SVG/Tutorial/Paths

to the Mozilla docs for SVG as they're super easy to read and understand, and a great reference for just about everything there. That way, if someone wants to learn more about what the commands mean, they can just click to open a new tab, rather than googling and stumbling around, which most won't bother to do anyway. You could also (or alternatively) include a simple modal for information on the different svg commands.

Just some ideas. I think right above "Bug reports & feedback" on the bottom left would be a great place to add it:

Also, you could change the link (or add a star icon) to say something about "star this project on GitHub" in case you'd like to get even more stars ⭐

Also, as someone else mentioned, cleaning up unused items / optimizing the SVG code feels like it would be do-able here, maybe not perfectly, but at least to improve the efficiency (not just file size, but also work to draw it)

[justingolden21]

One more idea:

add a modal that shows the keyboard shortcuts listed in the readme

(also I think there's a typo in the word "escape")