Main README update

[isamauny-wso2]

Update README according to new agreed template.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ isamauny-wso2
❌ Isabelle Mauny

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[isamauny-wso2]

Closing to remove contributions from different GH ID