nef - Xcode Editor Extension (#895)

* Update README.md

* make wording more terse

* tweak

README.md

@@ -150,6 +150,7 @@ Check out these projects our awesome community has created:
 - [Vim `carbon-now-sh`](https://github.com/kristijanhusak/vim-carbon-now-sh) - Open up the selection in your current Vim/Neovim using function `CarbonNowSh()`
 - [Emacs `carbon-now-sh`](https://github.com/veelenga/carbon-now-sh.el) - Open up the selection in your current Emacs using interactive function `carbon-now-sh`
 - [Xcode `carbon-now-sh`](https://github.com/StevenMagdy/CarboNow4Xcode) - Open up your current selection in `carbon.now.sh`
+- [Xcode `nef`](https://github.com/bow-swift/nef-plugin) - This Xcode extension enables you to export a code selection as a Carbon snippet in a single action
 
 ##### Tools
 
@@ -314,4 +315,5 @@ Thanks goes out to all these wonderful people ([emoji key](https://github.com/ke
 
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