Added Travis-CI status

Former-commit-id: 2aec27156a9ddb8bab201290f9c258e2e68795de

README.md

@@ -1,3 +1,5 @@
+[![Build Status](https://travis-ci.org/jgraph/draw.io.png?branch=master)](https://travis-ci.org/jgraph/draw.io)
+
 About
 -----
 [draw.io](https://www.draw.io) is an online diagramming web site that delivers the source in this project.
@@ -23,4 +25,4 @@ The full packaged .war of the client and servlets is built when the project is t
 
 Supported Browsers
 ------------------
-draw.io supports IE 11, Chrome 32+, Firefox 38+, Safari 7.1.x, 8.0.x, 9.1.x and 10.0.x, Opera 20+, Native Android browser 5.1.x+, the default browser in the current and previous major iOS versions (e.g. 10.x and 9.x) and Edge 23+.
+draw.io supports IE 11, Chrome 32+, Firefox 38+, Safari 7.1.x, 8.0.x, 9.1.x and 10.0.x, Opera 20+, Native Android browser 5.1.x+, the default browser in the current and previous major iOS versions (e.g. 10.x and 9.x) and Edge 23+.