Merge pull request #821 from apache/document/community-links

Add links to resources catalog

docs/README.md

@@ -22,6 +22,10 @@
     * [Plugin development guide](en/Plugin-Development-Guide.md)
     * Protocol
       * [Cross Process Propagation Headers Protocol, v1.0](en/Skywalking-Cross-Process-Propagation-Headers-Protocol-v1.md)
+  * Resources provided by community
+    * [Public speakings](https://github.com/OpenSkywalking/Community#public-speakings)
+    * [Videos](https://github.com/OpenSkywalking/Community#videos)
+    * [Articles](https://github.com/OpenSkywalking/Community#articles)
   * FAQ
     * [Why only traces in UI?](cn/FAQ/Why-have-traces-no-others.md)
     * [Too many GRPC logs in the console](cn/FAQ/Too-many-gRPC-logs.md)

docs/README_ZH.md

@@ -25,6 +25,10 @@
     * 交互协议
         * [Cross Process Propagation Headers Protocol, v1.0  跨进程追踪上下文传递协议](cn/Skywalking-Cross-Process-Propagation-Headers-Protocol-CN-v1.md)
         * [SkyWalking Trace Data Protocol 探针与Collector间网络协议](cn/Trace-Data-Protocol-CN.md)
+  * 社区提供的共享资源
+    * [公开演讲](https://github.com/OpenSkywalking/Community#public-speakings)
+    * [视频](https://github.com/OpenSkywalking/Community#videos)
+    * [文章](https://github.com/OpenSkywalking/Community#articles)
   * FAQ
     * [Trace查询有数据，但是没有拓扑图和JVM数据?](cn/FAQ/Why-have-traces-no-others-CN.md)
     * [加载探针，Console被GRPC日志刷屏](cn/FAQ/Too-many-gRPC-logs-CN.md)