Update Readme with jaxrs option

Author: jlisam

README.md

@@ -66,11 +66,11 @@ The plugin is executed as part of a protoc compilation step:
 
 The flit plugin accepts the following plugin parameters:
 
-| Name          | Required  | Type                          | Description                                               |
-|:--------------|:---------:|:------------------------------|:----------------------------------------------------------|
-| `target`      | Y         | `enum[server]`                | The type of target to generate e.g. server, client etc    |
-| `type`        | Y         | `enum[spring,undertow,boot]`  | Type of target to generate                                |
-| `context`     | N         | `string`                      | Base context for routing, default is `/twirp`             |
+| Name          | Required  | Type                              | Description                                               |
+|:--------------|:---------:|:----------------------------------|:----------------------------------------------------------|
+| `target`      | Y         | `enum[server]`                    | The type of target to generate e.g. server, client etc    |
+| `type`        | Y         | `enum[spring,undertow,boot,jaxrs]`| Type of target to generate                                |
+| `context`     | N         | `string`                          | Base context for routing, default is `/twirp`             |
 
 # Development