[in the wild] add collapsible tree example

README.md

@@ -165,6 +165,7 @@ Lots coming soon, check out the [roadmap](./ROADMAP.md).
 - [williaster/data-ui](https://github.com/williaster/data-ui) ([Demo](https://williaster.github.io/data-ui/))
 - [Flaque/data-structures](https://github.com/Flaque/data-structures) ([Interactive explanation of the trie data structure](https://trie.now.sh/))
 - [dylanmoz/trello](https://github.com/DylanMoz/dylanmoz.github.io/blob/source/src/pages/trello/TrelloGraph.js) ([Demo](http://dylanmoz.github.io/trello/)) ([How to Make Beautiful Graphs With vx and React-Motion](https://devblog.classy.org/how-to-make-beautiful-graphs-with-vx-and-react-motion-6ffe7aecf6f3))
+- Collapsible tree with react-move by [@techniq](https://github.com/techniq) ([Demo](https://codesandbox.io/s/n3w687vmqj)) ([More info](https://github.com/hshoff/vx/issues/162#issuecomment-335029517))
 - Have a project that's using vx? Open a pull request and we'll add it to the list.
 
 ## FAQ