Update README.md

README.md

@@ -12,6 +12,10 @@ Includes a How-to section on using the glyph identifiers in a Shortcuts programm
 
 ![How to use section](https://github.com/electrikmilk/shortcuts-glyph-search/assets/4368524/f225dc54-c096-4ba5-ad0e-b1c8e1e660d7)
 
+## Support this glyph list
+
+The identifiers are listed in [glyphs.json](https://github.com/electrikmilk/shortcuts-glyph-search/blob/main/src/assets/glyphs.json). You could use a [online JSON tool](https://onlinejsontools.com/extract-json-keys) to extract a list of keys for your application.
+
 ## Dependencies
 
 - [shortcut-icons](https://github.com/atnbueno/shortcut-icons)