Add Dart plugin

README.md

@@ -37,6 +37,7 @@ place for people (and asdf itself) to look for plugins.
 | Coq       | [gingerhot/asdf-coq](https://github.com/gingerhot/asdf-coq) | [![Build Status](https://travis-ci.org/gingerhot/asdf-coq.svg?branch=master)](https://travis-ci.org/gingerhot/asdf-coq)
 | Crystal   | [marciogm/asdf-crystal](https://github.com/marciogm/asdf-crystal) | [![Build Status](https://travis-ci.org/marciogm/asdf-crystal.svg?branch=master)](https://travis-ci.org/marciogm/asdf-crystal)
 | D (DMD)   | [sylph01/asdf-dmd](https://github.com/sylph01/asdf-dmd) | [![Build Status](https://travis-ci.org/sylph01/asdf-dmd.svg?branch=master)](https://travis-ci.org/sylph01/asdf-dmd)
+| Dart      | [PatOConnor43/asdf-dart](https://github.com/PatOConnor43/asdf-dart) | [![Build Status](https://travis-ci.org/PatOConnor43/asdf-dart.svg?branch=master)](https://travis-ci.org/PatOConnor43/asdf-dart)
 | Dep       | [paxosglobal/asdf-dep](https://github.com/paxosglobal/asdf-dep) | [![Build Status](https://travis-ci.com/paxosglobal/asdf-dep.svg?branch=master)](https://travis-ci.com/paxosglobal/asdf-dep)
 | Desk      | [endorama/asdf-desk](https://github.com/endorama/asdf-desk) | [![Build Status](https://travis-ci.org/endorama/asdf-desk.svg?branch=master)](https://travis-ci.org/endorama/asdf-desk)
 | docker-slim | [everpeace/asdf-docker-slim](https://github.com/everpeace/asdf-docker-slim.git) | [![Build Status](https://travis-ci.org/everpeace/asdf-docker-slim.svg?branch=master)](https://travis-ci.org/everpeace/asdf-docker-slim)

plugins/dart

@@ -0,0 +1 @@
+repository = https://github.com/PatOConnor43/asdf-dart.git