doc: add reference to canboatjs & admin ui (#15)

README.md

@@ -4,8 +4,6 @@
 
 Plugin to convert Signal K to NMEA2000
 
-Currently only support apparent wind, gps location and system time.
-
 Requires that toChildProcess be set to nmea2000out for the actisense execute provider:
 
 ```
@@ -20,4 +18,9 @@ Requires that toChildProcess be set to nmea2000out for the actisense execute pro
       }
 ```
 
+or you can configure your N2K connection to use canboatjs in the server admin user interface:
+![image](https://user-images.githubusercontent.com/1049678/41557237-ac2e2eea-7345-11e8-8719-bbd18ef832cb.png)
+
+
+
 Note that if you're using an NGT-1 to transmit AIS, then you need to use their Windows [NMEA Reader](https://www.actisense.com/wp-content/uploads/2017/07/Actisense-NMEA-Reader-v1.517-Setup.exe_.zip) software to add the pgns (129794, 129038, 129041) in the transmitted list.