Add forivall/pure to Ports section in the readme (sindresorhus#556)

Author: forivall

readme.md

@@ -230,6 +230,7 @@ See [FAQ Archive](https://github.com/sindresorhus/pure/wiki/FAQ-Archive) for pre
 - **ZSH**
 	- [therealklanni/purity](https://github.com/therealklanni/purity) - More compact current working directory, important details on the main prompt line, and extra Git indicators.
  	- [intelfx/pure](https://github.com/intelfx/pure) - Solarized-friendly colors, highly verbose, and fully async Git integration.
+	- [forivall/pure](https://github.com/forivall/pure) - A minimal fork which highlights the Git repo's root directory in the path.
 	- [dfurnes/purer](https://github.com/dfurnes/purer) - Compact single-line prompt with built-in Vim-mode indicator.
 	- [chabou/pure-now](https://github.com/chabou/pure-now) - Fork with [Now](https://zeit.co/now) support.
 	- [pure10k](https://gist.github.com/romkatv/7cbab80dcbc639003066bb68b9ae0bbf) - Configuration file for [Powerlevel10k](https://github.com/romkatv/powerlevel10k/) that makes it look like Pure.