Update README.md

chore: documentation to readme

README.md

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-## Init Readme file
+## Init Readme file
+
+## About
+
+This Repository is a nuget package responsible standardizing HVS (Health Vulnerability and security) for subsurface applications. The package is hosted in the [github registry](https://github.com/orgs/equinor/packages?repo_name=SubSurfAppManagementMonitoringNuGet).
+
+[github nuget registry documentation](https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-nuget-registry)
+
+## Uploading new version of the nuget package
+
+In the github repository, Click Create new release. Create a tag in the fromat `v#.#.#`, where `#` are one or more numbers. Upon publishing the release Github actions will pack and upload a new package with version `v#.#.#`.