Document --admin-id option.

Also alphabetize remaining options.

README.md

@@ -129,6 +129,18 @@ The statically linked linux binary will be stored in ./bin sub folder.
 
 *goBMP parameters:*
 
+```
+--admin-id={string} (default is os.hostname)
+```
+
+This collector's admin id (used in "bmp-raw" mode)
+
+```
+--bmp-raw
+```
+
+Publish BMP RAW messages (the default is to publish parsed messages)
+
 ```
 --destination-port={port} (default 5050)
 ```
@@ -156,12 +168,6 @@ When intercept set "true", all incomming BMP messages will be processed and a co
 
 Kafka server TCP/IP address
 
-```
---bmp-raw
-```
-
-Publish BMP RAW messages (the default is to publish parsed messages)
-
 ```
 --msg-file={message file path and location} (default "/tmp/messages.json")
 ```