Multiport support and readme update

Author: vishnuv688

README.md

@@ -70,11 +70,17 @@ Works with **WebdriverIO** and **[Nightwatch.js](./packages/nightwatch-devtools/
 
 ## Installation
 
+**WebdriverIO:**
 ```bash
 npm install @wdio/devtools-service
 ```
 
-> **Nightwatch users:** `@wdio/nightwatch-devtools` is included as a dependency of `@wdio/devtools-service`. Install the service and import from `@wdio/nightwatch-devtools` directly — see the [Nightwatch Integration](#nightwatch-integration) section.
+**Nightwatch:**
+```bash
+npm install @wdio/nightwatch-devtools
+```
+
+> See the [Nightwatch Integration](#nightwatch-integration) section for configuration details.
 
 ## Configuration
 

packages/nightwatch-devtools/README.md

@@ -2,7 +2,9 @@
 
 > Nightwatch adapter for [WebdriverIO DevTools](../../README.md) - brings the same visual debugging UI to your Nightwatch test suite with zero test code changes.
 
-> **Note:** `@wdio/nightwatch-devtools` is included as a dependency of `@wdio/devtools-service`. Install the service package and import from `@wdio/nightwatch-devtools` directly.
+```bash
+npm install @wdio/nightwatch-devtools
+```
 
 ---
 

packages/nightwatch-devtools/src/index.ts

@@ -119,7 +119,8 @@ class NightwatchDevToolsPlugin {
         this.options.hostname
       )
       log.info('🚀 Starting DevTools backend...')
-      await start(this.options)
+      const { port } = await start(this.options)
+      this.options.port = port
       const url = `http://${this.options.hostname}:${this.options.port}`
       log.info(`✓ Backend started on port ${this.options.port}`)
       log.info(`  DevTools UI: ${url}`)