Add Progress Pride flag

“Progress” Pride Flag by Daniel Quasar is licensed under a
Creative Commons Attribution-NonCommercial-ShareAlike 4.0
International License. (CC) BY-NC-SA

README.md

@@ -3,15 +3,17 @@
 A simple repository by [JoyPixels](https://www.joypixels.com) to provide a fully-inclusive set of pride emoji flags.
 
 ## what's included?
-All 16 flags in SVG and PNG (512px) format within the repository, as well as attached to [each release](https://github.com/joypixels/pride-emoji-flags/releases) 
+All 17 flags in SVG and PNG (512px) format within the repository, as well as attached to [each release](https://github.com/joypixels/pride-emoji-flags/releases) 
 in zip format for easy download.
 
 ## how can I use them?
 These flags have not been recommended for general use (RGI) by Unicode, meaning there is
 no globally shared emoji code point by which they can be referred. A [petition](https://www.change.org/p/pride-flag-emojis?recruiter=971295933&utm_source=share_petition&utm_medium=copylink)
 exists to help drive the movement for inclusion into Unicode.
 
-These flags are released under the Creative Commons [(CC-BY-4.0)](https://creativecommons.org/licenses/by/4.0/legalcode) 
+“Progress” Pride Flag by Daniel Quasar is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, [(CC) BY-NC-SA](http://creativecommons.org/licenses/by-nc-sa/4.0/).
+
+All other flags are released under the Creative Commons [(CC-BY-4.0)](https://creativecommons.org/licenses/by/4.0/legalcode) 
 license so that there are few limits
 on the ways they can be used. Websites, apps, sticker packs, and physical goods (stickers, posters, etc) 
 are all permitted within the CC-BY-4.0 license. Please see this guide on [best practices for attribution](https://wiki.creativecommons.org/wiki/Best_practices_for_attribution).