Add description for script in README file

Author: YevhenZvieriev

README.md

@@ -311,7 +311,8 @@ It is recommended to keep your root docker config files in one repository, and y
 - `bin/setup-composer-auth`: Setup authentication credentials for Composer.
 - `bin/setup-domain`: Setup Magento domain name. Ex: `bin/setup-domain magento.test`
 - `bin/setup-grunt`: Install and configure Grunt JavaScript task runner to compile .less files
-- `bin/setup-pwa-studio`: (BETA) Install PWA Studio (requires NodeJS and Yarn to be installed on the host machine). Pass in your base site domain, otherwise the default `master-7rqtwti-mfwmkrjfqvbjk.us-4.magentosite.cloud` will be used. Ex: `bin/setup-pwa-studio magento.test`
+- `bin/setup-pwa-studio`: (BETA) Install PWA Studio (requires NodeJS and Yarn to be installed on the host machine). Pass in your base site domain, otherwise the default `master-7rqtwti-mfwmkrjfqvbjk.us-4.magentosite.cloud` will be used. Ex: `bin/setup-pwa-studio magento.test`.
+- `bin/setup-pwa-studio-sampledata`: This script makes it easier to install Venia sample data. Pass in your base site domain, otherwise the default `master-7rqtwti-mfwmkrjfqvbjk.us-4.magentosite.cloud` will be used. Ex: `bin/setup-pwa-studio-sampledata magento.test`.
 - `bin/setup-ssl`: Generate an SSL certificate for one or more domains. Ex. `bin/setup-ssl magento.test foo.test`
 - `bin/setup-ssl-ca`: Generate a certificate authority and copy it to the host.
 - `bin/start`: Start all containers, good practice to use this instead of `docker-compose up -d`, as it may contain additional helpers.