Updated readme.

readme.md

 ## Oxyflame Rendering Tools
 
 ### Dependencies
-- GCC 10+
-- CMake 3.19+
-- Ospray 1.8.5
-- VTK 9.0.1
+- GCC/MSVC
+- CMake
+- Ospray
+- VTK
 
-### Contact
-- If you encounter any problems, contact demiralp@vr.rwth-aachen.de .
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+### Building
+- Run CMake in the `offline_ray_tracer` subdirectory.
+- Build the output of CMake with GCC/MSVC.
+
+### Running
+- Modify the dataset location and rendering preferences in `settings.json`.
+- Run as `offline_ray_tracer [PATH_TO_SETTINGS_JSON]`.