Add new file

HfT Bau 08/index.md

+This directory is empty.
+
+All CityGML models ( without and with EnergyADE entries ) are located in 
+
+    ../HfT Building Models/ CityGML 2.0
+    
+whereas all Sketchup Models are located in
+    
+    ../HfT Building Models/Sketchup
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