chore: update readme

README.md

@@ -1,2 +1,41 @@
-# spacecat-audit-worker
-SpaceCat Audit Worker for auditing edge delivery sites.
+# SpaceCat Audit Worker
+
+> SpaceCat Audit Worker for auditing edge delivery sites.
+
+## Status
+[![codecov](https://img.shields.io/codecov/c/github/adobe-rnd/spacecat-audit-worker.svg)](https://codecov.io/gh/adobe-rnd/spacecat-audit-worker)
+[![CircleCI](https://img.shields.io/circleci/project/github/adobe-rnd/spacecat-audit-worker.svg)](https://circleci.com/gh/adobe-rnd/spacecat-audit-worker)
+[![GitHub license](https://img.shields.io/github/license/adobe-rnd/spacecat-audit-worker.svg)](https://github.com/adobe-rnd/spacecat-audit-worker/blob/master/LICENSE.txt)
+[![GitHub issues](https://img.shields.io/github/issues/adobe-rnd/spacecat-audit-worker.svg)](https://github.com/adobe-rnd/spacecat-audit-worker/issues)
+[![LGTM Code Quality Grade: JavaScript](https://img.shields.io/lgtm/grade/javascript/g/adobe-rnd/spacecat-audit-worker.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/adobe-rnd/spacecat-audit-worker)
+[![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
+
+## Installation
+
+```bash
+$ npm install @adobe/spacecat-audit-worker
+```
+
+## Usage
+
+See the [API documentation](docs/API.md).
+
+## Development
+
+### Build
+
+```bash
+$ npm install
+```
+
+### Test
+
+```bash
+$ npm test
+```
+
+### Lint
+
+```bash
+$ npm run lint
+```