Update README.md

README.md

-**UML Diagrams**
+**UML Diagrams (v2.1)**
 
-FWEBuilding - https://transfer.hft-stuttgart.de/pages/fwe-ade/v2.1/UML/FWEBuilding/
+FWEBuilding - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWEBuilding/v2.1/UML/
 
-FWELanduse - https://transfer.hft-stuttgart.de/pages/fwe-ade/v2.1/UML/FWELanduse/
+FWELanduse - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWELanduse/v2.1/UML/
 
-FWEArea - https://transfer.hft-stuttgart.de/pages/fwe-ade/v2.1/UML/FWEArea/
+FWEArea - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWEArea/v2.1/UML/
 
-FWESystem - https://transfer.hft-stuttgart.de/pages/fwe-ade/v2.1/UML/FWESystem/
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+FWESystem - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWESystem/v2.1/UML/
+
+**XSD Files (v2.1)**
+
+FWEBuilding - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWEBuilding/v2.1/XSD/FWEBuilding.xsd
+
+FWELanduse - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWEBuilding/v2.1/XSD/FWELanduse.xsd
+
+FWEArea - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWEBuilding/v2.1/XSD/FWEArea.xsd
+
+FWESystem - https://transfer.hft-stuttgart.de/pages/fwe-ade/FWEBuilding/v2.1/XSD/FWESystem.xsd
+
+**CityGML FWE ADE UML Documentation (v2.1)** 
+
+https://transfer.hft-stuttgart.de/pages/fwe-ade/Documentation/FWEADE_v2.1_Rushi_30.06.20.pdf
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