add header to readme

See merge request !3

Use now API v1.0.0

See merge request !2

Merge branch 'develop' of https://labs.etsi.org/rep/arf/world-storage-api-helpers/world-storage-asp.net-server into develop

changed reference in Startup.cs to use the original OpenAPI contract that's included in the static files (instead of using generated from C# classes) to get the provided sample requests

# Conflicts:
#	OpenAPI.yaml