update agent host/port and sampling server details in README

- add note to not recommend UDP outside of localhost
- simplify suggested host/ports

Author: MikeGoldsmith

README.md

@@ -53,24 +53,26 @@ The code can be re-generated with
     $ git apply scripts/thrift-gen.patch
 ```
 
-### Updating Agent host and port
+### Updating Agent Host and Port
 
 The default agent host and port is `127.0.0.1:6831`, you can use a different host/port by updating your reporter configuration.
 
 YAML configuration:
 
 ```yml
 repoter:
-  localAgentHostPort: my-jaeger-agent.local # or another IP:Port 10.120.1.101:6831
+  localAgentHostPort: localhost:6831
 ```
 
-### Collector URL
+NOTE: It is not recommended to use a remote host for UDP connections.
 
-The default collector URL is `http://127.0.0.1:5778`, you can use a different URL by updating the sampler configuration.
+### Updating Sampling Server URL
+
+The default sampling collector URL is `http://127.0.0.1:5778`, you can use a different URL by updating the sampler configuration.
 
 ```yml
 sampler:
-  samplingServerURL: http://my-jaeger-collector.local # or IP:Port http://10.120.1.101:5778
+  samplingServerURL: http://jaeger-collector.local:5778
 ```
 
 ## License