chore: update webdriver.io docs

Author: haoqunjiang

docs/core-plugins/e2e-webdriverio.md

@@ -1,4 +1,4 @@
-# @vue/cli-plugin-e2e-nightwatch
+# @vue/cli-plugin-e2e-webdriverio
 
 > e2e-webdriverio plugin for vue-cli
 
@@ -11,18 +11,19 @@
   Options:
 
   ```
-  --url                 run the tests against given url instead of auto-starting dev server
-  --headless            use chrome or firefox in headless mode
-  --remote              run e2e tests on a cloud provider
+  --remote          Run tests remotely on SauceLabs
+
+  All WebdriverIO CLI options are also supported.
+
   ```
 
   Additionally, all [WebdriverIO CLI options](https://webdriver.io/docs/clioptions.html) are also supported.
-  E.g.: `--spec`, `--watch` etc.
+  E.g.: `--baseUrl`, `--bail` etc.
 
 
 ## Project Structure
 
-The following structure will be generated when installing this plugin. It includes a spec file a page object definition for the Vue.js app as example.
+The following structure will be generated when installing this plugin:
 
 ```
 tests/e2e/
@@ -33,32 +34,48 @@ tests/e2e/
   └── .eslintrc.js
 ```
 
+In addition to that there will be 3 configuration files generated:
+
+- `wdio.shared.conf.js`: a shared configuration with all options defined for all environments
+- `wdio.local.conf.js`: a local configuration for local testing
+- `wdio.sauce.conf.js`: a remote configuration for testing on a cloud provider like [Sauce Labs](https://saucelabs.com/)
+
+The directories contain:
+
 #### `pageobjects`
-Working with page objects is a popular methodology in end-to-end UI testing. See [working with page objects](https://webdriver.io/docs/pageobjects.html) section for details.
+Contains an example for an page object. Read more on using [PageObjects](https://webdriver.io/docs/pageobjects.html) with WebdriverIO.
 
 #### `specs`
-The main location where tests are located. You can specify specific tests or define suites to run various subsets of these tests. [More info](https://webdriver.io/docs/organizingsuites.html).
+Your e2e tests.
 
 ## Installing in an Already Created Project
 
 ``` sh
 vue add e2e-webdriverio
 ```
 
+For users with older CLI versions you may need to run `vue add @vue/e2e-webdriverio`.
+
 ## Running Tests
 
-By default, all tests inside the `specs` folder will be run using Chrome. If you'd like to run end-to-end tests against Chrome (or Firefox) in headless mode, simply pass the `--headless` argument.
+By default, all tests inside the `specs` folder will be run using Chrome. If you'd like to run end-to-end tests against Chrome (or Firefox) in headless mode, simply pass the `--headless` argument. Tests will be automatically run in parallel when executed in the cloud.
 
 ```sh
 $ vue-cli-service test:e2e
 ```
 
-This will run the tests automatically in parallel on Firefox and Chrome.
-
 **Running a single test**
 
 To run a single test supply the filename path. E.g.:
 
 ```sh
 $ vue-cli-service test:e2e --spec tests/e2e/specs/test.js
 ```
+
+**Skip Dev server auto-start**
+
+If the development server is already running and you want to skip starting it automatically, pass the `--url` argument:
+
+```sh
+$ vue-cli-service test:e2e --baseUrl=http://localhost:8080/
+```

packages/@vue/cli-plugin-e2e-webdriverio/README.md

@@ -28,10 +28,10 @@ The following structure will be generated when installing this plugin:
 ```
 tests/e2e/
   ├── pageobjects/
-  |   └── app.js
+  |   └── app.page.js
   ├── specs/
   |   ├── app.spec.js
-  └── globals.js
+  └── .eslintrc.js
 ```
 
 In addition to that there will be 3 configuration files generated: