Update README.md

README.md

@@ -5,17 +5,16 @@ Sky Walking | [中文](README_ZH.md)
 
 **SkyWalking 3**: APM for Distributed Systems, also known Distributed Tracing System. 
 
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+[![Build Status](https://travis-ci.org/OpenSkywalking/sky-walking.svg?branch=master)](https://travis-ci.org/wu-sheng/sky-walking)
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 * Auto instrumentation by javaagent, **no need to CHANGE any application source code**.
   * High performance agent. Only increase extra **10%** cpu cost in 5000+ tps application, even **do not need to use sampling mechanism**, [check test reports](#test-reports).
-  * [Supported middlewares, frameworks and libraries](https://github.com/wu-sheng/sky-walking/wiki/3.2-supported-list).
+  * [Supported middlewares, frameworks and libraries](https://github.com/OpenSkywalking/sky-walking/wiki/3.2-supported-list).
 * Manual instrumentation
   * As an [OpenTracing supported tracer](http://opentracing.io/documentation/pages/supported-tracers)
   * Use **@Trace** annotation for any methods you want to trace.