Update README.md

README.md

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 A collection of 14,808 emojis from Apple, Facebook, Google, and WhatsApp. It includes all the emojis for these apps/platforms as of early 2022.
 
 * Counts: Facebook=3664, Google=3664, Apple=3961, WhatsApp=3519.
-* The emoji code points are at the end of the filename. For example: The filename "astronaut-dark-skin-tone_1f9d1-1f3ff-200d-1f680.png" can be converted to an emoji like this in JavaScript:
+* The emoji code points are at the end of the filename. For example, the filename "astronaut-dark-skin-tone_1f9d1-1f3ff-200d-1f680.png" can be converted to an emoji in several different ways (in JavaScript):
   * `"\u{1f9d1}\u{1f3ff}\u{200d}\u{1f680}"`
   * `String.fromCodePoint(0x1f9d1, 0x1f3ff, 0x200d, 0x1f680)`
+  * More generally: `String.fromCodePoint(...filename.split("_")[1].split("-").map(n => parseInt(n, 16)))`
 * The images are all 144x144 pixels.
 
 ## apple examples: