Update README.md

fritz-c · web-flow · commit 735aa0dc36ca · 2016-09-27T13:42:30.000+09:00
diff --git a/README.md b/README.md
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 # React Sortable Tree
 
+![tree200](https://cloud.githubusercontent.com/assets/4413963/18860410/26f64de8-84b8-11e6-9284-350308eed30a.png)
+
 __Note: This is a work in progress; most of the features are not yet implemented.__
 
 [DEMO](https://fritz-c.github.io/react-sortable-tree/)
