Finelize diagrams and README

Diagrams/Drawio/classDiagram.drawio

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Diagrams/Drawio/flowDiagram.drawio

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Diagrams/Drawio/sequenceDiagram.drawio

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README.md

@@ -78,4 +78,4 @@ To run the tests, you can run the test methods of the Test classes in your IDE.
 ## References
 
 
-The Validate class is based on a stackoverflow answer by the user Erk to [this](https://stackoverflow.com/questions/1809093/how-can-i-place-validating-constraints-on-my-method-input-parameters) question.
+The Validate class is based on a stackoverflow answer by the user Erk to [this](https://stackoverflow.com/questions/1809093/how-can-i-place-validating-constraints-on-my-method-input-parameters) question. All other code and documentation is written by me.