Add skeleton README files

README.md

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-# CERIF-Refactoring-ModelUseCases
+# CERIF Refactoring Pilot Model Use-Cases
+The model use-cases for the CERIF Refactoring Pilot project implemented 
+using the [CERIF Core](https://github.com/EuroCRIS/CERIF-Core) and some modules.
+
+## [UC#1](./UC1/): Researcher Moving Institutions
+A researcher is willing to move from a country to other (e.g. France to Australia) to a different institution. 
+It is expected that his profile and vitae may be transferred electronically to the new institution via a standardised model and format that can be digitally signed as a verifiable claim or verifiable credential 
+(following the directions of the [W3C working group of the same name](https://www.w3.org/2017/vc/WG/)).
+
+## [UC#2](./UC2/): Project Reporting
+Partners in a multinational project funded under the EU H2020 programme need to share project participation data electronically with the coordinator for reporting under the particular rules of a scheme or call. 
+The partners include non-EU members, e.g. from China.
+
+## [UC#3](./UC3/): Infrastructure Search
+A researcher is looking for a research infrastructure for a very concrete physics experiment 
+and wants to know if there are e-infrastructures available in other countries 
+that he could eventually use, with or without paying for it.

UC1/README.md

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+# UC#1: Researcher Moving Institutions
+
+## Use-Case Description
+A researcher is willing to move from a country to other (e.g. France to Australia) to a different institution. 
+It is expected that his profile and vitae may be transferred electronically to the new institution via a standardised model and format that can be digitally signed as a verifiable claim or verifiable credential 
+(following the directions of the [W3C working group of the same name](https://www.w3.org/2017/vc/WG/)).
+
+## Example Data
+Josiah Carberry (https://orcid.org/0000-0002-1825-0097) is a well-known fictitious person whose carreer and achievements will be used in this use-case.

UC2/README.md

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+# UC#2: Project Reporting
+
+## Use-Case Description
+Partners in a multinational project funded under the EU H2020 programme need to share project participation data electronically with the coordinator for reporting under the particular rules of a scheme or call. 
+The partners include non-EU members, e.g. from China.
+
+## Example Data

UC3/README.md

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+# UC#3: Infrastructure Search
+
+## Use-Case Description
+A researcher is looking for a research infrastructure for a very concrete physics experiment 
+and wants to know if there are e-infrastructures available in other countries 
+that he could eventually use, with or without paying for it.
+
+## Example Data