modify README

README.md

-vim gnb-sbi-plugin/src/plugin_app
-change ue to your host name  
-    like change ue to liuyu
+## How to build
+```
+cd build/scripts
+sudo ./build_plugin -I   # install third party libs
+sudo ./build_plugin -c -j
+```
 
-cd gnb-sbi-plugin/src/plugin_app
+## How to Run
+```
+cd build/PLUGIN
+sudo ./plugin -c ../../etc/plugin.conf -o
+```
 
-sudo rm -r build
-
-mkdir build
-
-cd build
-
-cmake ..
-
-make -j4
+after you run the plugin, you need to tell plugin the AMF info
+```
+curl -X POST -d '{"amf2":{"ip":"AMF_IP"}}' http://PLUGIN_IP:8282/nplugin-dr/v1/create/AmfIpList
+```
+in our default docker env, you should run like this:
+```
+curl -X POST -d '{"amf2":{"ip":"10.244.1.12"}}' http://10.244.1.20:8282/nplugin-dr/v1/create/AmfIpList
+```