* Add README note about Notation signatures

Signed-off-by: Carlos Rodríguez Hernández <carlosrh@vmware.com>

* Fix linter issues

Signed-off-by: Carlos Rodríguez Hernández <carlosrh@vmware.com>

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Signed-off-by: Carlos Rodríguez Hernández <carlosrh@vmware.com>