Update README.md

README.md

-# IFC → CityGML 3 with FME
-Transform building models from **IFC 2x3 / IFC 4x3** into **CityGML v3** for urban-scale simulations and smart-city integration.  
-Focus: interoperability, semantic fidelity, and robust data pipelines using **FME**.
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 ## Overview
 This project provides an FME-based workflow to convert BIM data (IFC) into CityGML 3.0 feature structures suitable for city-scale analytics (e.g., energy, occupancy, urban planning). It documents common interoperability challenges (geometry, semantics, CRS, level of detail) and proposes practical mitigation patterns.
 
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-## Objectives
+## Targets
 - Build reproducible **FME Workbench** workflows for IFC → CityGML v3.
 - Map core **semantics** (e.g., Building, BuildingPart, Storey, Space, Openings).
 - Preserve geometry/topology as much as possible (surface vs solid).