Add auto-generated README.md for videointelligence API (#2327)

packages/video-intelligence/README.md

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+# Node.js Client for Google Cloud Video Intelligence API ([Alpha](https://github.com/GoogleCloudPlatform/google-cloud-node#versioning))
+
+Idiomatic Node.js client for [Google Cloud Video Intelligence API][Product Documentation]
+- [Client Library Documentation][]
+- [Product Documentation][]
+
+## Quick Start
+In order to use this library, you first need to go through the following steps:
+
+1. [Select or create a Cloud Platform project.](https://console.cloud.google.com/project)
+2. [Enable the video-intelligence api.](https://console.cloud.google.com/apis/api/video-intelligence)
+3. [Setup Authentication.](https://googlecloudplatform.github.io/google-cloud-node/#/docs/google-cloud/master/guides/authentication)
+
+### Installation
+```
+$ npm install @google-cloud/video-intelligence
+```
+
+### Next Steps
+- Read the [Client Library Documentation][] for Google Cloud Video Intelligence API to see other available methods on the client.
+- Read the [Google Cloud Video Intelligence API Product documentation][Product Documentation] to learn more about the product and see How-to Guides.
+- View this [repository's main README](https://github.com/GoogleCloudPlatform/google-cloud-node/blob/master/README.md) to see the full list of Cloud APIs that we cover.
+
+[Client Library Documentation]: https://googlecloudplatform.github.io/google-cloud-node/#/docs/video-intelligence
+[Product Documentation]: https://cloud.google.com/video-intelligence