update readme.

README.md

@@ -17,6 +17,30 @@ Open your browser and then go to <http://localhost:28080>
 
 ### Add your own Java based application to be monitored.
 
+* Modify the `pinpoint.config`
+
+```
+###########################################################
+# Collector server                                        #
+###########################################################
+profiler.collector.ip=127.0.0.1
+
+# placeHolder support "${key}"
+profiler.collector.span.ip=${profiler.collector.ip}
+profiler.collector.span.port=9996
+
+# placeHolder support "${key}"
+profiler.collector.stat.ip=${profiler.collector.ip}
+profiler.collector.stat.port=9995
+
+# placeHolder support "${key}"
+profiler.collector.tcp.ip=${profiler.collector.ip}
+profiler.collector.tcp.port=9994
+
+```
+
+* The following script is a example for a spring boot application.
+
 ```shell
 java  -javaagent:/some-absolute-path/pinpoint-agent-1.6.1/pinpoint-bootstrap-1.6.1.jar -Dpinpoint.agentId=some-union-id -Dpinpoint.applicationName=some-name -jar build/libs/wise-log-1.0.0-SNAPSHOT.jar