Merge pull request #136 from christ66/patch-1

Fix build badge

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/jgraph/draw.io.png?branch=master)](https://travis-ci.org/jgraph/draw.io)
+[![Build Status](https://travis-ci.org/jgraph/drawio.png?branch=master)](https://travis-ci.org/jgraph/drawio)
 
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