Simplify README for new users

README.md

@@ -29,15 +29,9 @@
 [![Build python source distribution and wheels](https://github.com/apache/beam/workflows/Build%20python%20source%20distribution%20and%20wheels/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Build+python+source+distribution+and+wheels%22+branch%3Amaster+event%3Aschedule)
 [![Python tests](https://github.com/apache/beam/workflows/Python%20tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Python+Tests%22+branch%3Amaster+event%3Aschedule)
 [![Java tests](https://github.com/apache/beam/workflows/Java%20Tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Java+Tests%22+branch%3Amaster+event%3Aschedule)
-
-### Post-commit tests status (on master branch)
-
-Lang | SDK | Dataflow | Flink | Samza | Spark | Twister2
---- | --- | --- | --- | --- | --- | ---
-Go | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/) | --- | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Samza/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Samza/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/) | ---
-Java | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/)
-Python | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PreCommit_Python2_PVR_Flink_Cron/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PreCommit_Python2_PVR_Flink_Cron/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Samza/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Samza/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/) | ---
-XLang | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_PythonUsingJava_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_PythonUsingJava_Dataflow/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_PythonUsingJavaSQL_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_PythonUsingJavaSQL_Dataflow/lastCompletedBuild/)<br>[![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_JavaUsingPython_Dataflow/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_JavaUsingPython_Dataflow/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Samza/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Samza/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/) | [![Build Status](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark3/lastCompletedBuild/badge/icon)](https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark3/lastCompletedBuild/) | ---
+[![Go tests (Jenkins)](https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/badge/icon?subject=Go%20Tests%28Jenkins%29)](https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/)
+[![Java tests (Jenkins)](https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/badge/icon?subject=Java%20Tests%28Jenkins%29)](https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/)
+[![Python tests (Jenkins)](https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/badge/icon?subject=Python%20Tests%28Jenkins%29)](https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/)
 
 ## Overview