Saving custom fonts on export to HTML5 folder

When I add custom CSS fonts I have to add them manually to the HTML5 export folder. Is this a copyright thing or am I missing an option somewhere. Would be far easier if it happened automatically rather than having to remember to add them every time I update the file.

You can drag + drop the custom font files into your resource library – this is only required once. Here’s a workflow for a font: How do I add SF UI Display + Text fonts to prototype for IOS9? (San Francisco Mac System Font)