Update README.md

Author: demasy

README.md

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 # Demasy Labs | Point Of Sale (POS) Sample Schema
-Oracle database sample schema created by Ahmed El-Demasy < ahmed.eldemasy@rokettohub.com >.
+Oracle database sample schema created by Ahmed El-Demasy < ceo@rokettohub.com >.
 > Please note that this schema is for testing purposes only, as such it is unsupported and should not to be used in production environment.