Okay. At
https://gist.github.com/htdebeer/8bff0b1a0b2903d24c7e you'll find a generated SVG image. If you open that file in Firefox, you see something like in attached file "generated_SVG.png".
Now open the Web Developer Tools (CONTROL + SHIFT + i) by right clicking on the image and select the option 'Inspect Element' form the context menu. You see something like in "open_inspector.png"
Select the SVG Node, click right on it, and select the option 'Copy Outer HTML' (as in "copy_svg_element.png")
This copies the whole SVG element and all its children as text. Open a text editor. Paste the contents of clipboard and save the file like 'glass.svg'. You're done! You now have a SVG file on your computer.