Update README.md

README.md

@@ -112,6 +112,7 @@ pi@rpi3$ cnc -h
     -w, --watch-directory <path>        watch a directory for changes
     --access-token-lifetime <lifetime>  access token lifetime in seconds or a time span string (default: 30d)
     --allow-remote-access               allow remote access to the server
+    --controller <type>                 specify CNC controller: Grbl|Smoothie|TinyG (default: '')
 
   Examples:
 
@@ -120,14 +121,16 @@ pi@rpi3$ cnc -h
     $ cnc --watch-directory /home/pi/watch
     $ cnc --access-token-lifetime 60d  # e.g. 3600, 30m, 12h, 30d
     $ cnc --allow-remote-access
+    $ cnc --controller Grbl
 ```
 
-Instead of passing command line options for `--watch-directory`, `--access-token-lifetime`, and `--allow-remote-access`, you can create a `~/.cncrc` file that contains the following configuration in JSON format:
+Instead of passing command line options for `--watch-directory`, `--access-token-lifetime`, `--allow-remote-access`, and `--controller`, you can create a `~/.cncrc` file that contains the following configuration in JSON format:
 ```json
 {
     "watchDirectory": "/path/to/dir",
     "accessTokenLifetime": "30d",
-    "allowRemoteAccess": false
+    "allowRemoteAccess": false,
+    "controller": ""
 }
 ```
 
@@ -156,9 +159,16 @@ Check out an example configuration file [here](https://github.com/cncjs/cncjs/bl
 
 ```json
 {
+  "ports": [
+     {
+       "comName": "/dev/ttyAMA0",
+       "manufacturer": ""
+     }
+  ],
   "watchDirectory": "/path/to/dir",
   "accessTokenLifetime": "30d",
   "allowRemoteAccess": false,
+  "controller": "",
   "state": {
     "checkForUpdates": true
   },