Update README

README.md

@@ -289,6 +289,7 @@ A list of Sketch plugins hosted at GitHub, in alphabetical order.
 - [Pointbreak](https://pointbreak.protowire.com), by Mark Horgan: Add breakpoints to artboards so you can have mobile and desktop designs on the one artboard.
 - [Polaris Telescope](https://github.com/Shopify/polaris-telescope), by Shopify: Access Shopify Polaris from Sketch to speed up your design or development workflow
 - [polyglot](https://github.com/fruitfrills/polyglot), by fruitfrills: Text translations
+- [Potrace](https://github.com/perrysmotors/sketch-potrace), by Giles Perry: Convert bitmaps to vector graphics
 - [Presto Dom Gen](https://github.com/iarthstar/presto-dom-code), by iarthstar: Generates Presto Dom Code from Sketch Layers.
 - [Primary Sync](https://github.com/Primary-app/primary-sync), by Primary: Sync your Sketch designs 💎 with Primary's user flows and design documents.
 - [Print Export](https://github.com/BohemianCoding/print-export-sketchplugin), by Sketch: Export artboards or pages to a PDF for printing