Update README.md

Author: lquatrin

README.md

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-# cpp_volume_rendering2
-Structured volume rendering using OpenGL, trying to reproduce some past proposed illumination techniques.
+## C++ Volume Rendering
+
+A volume rendering application with different techniques, trying to be as similar as possible to the results from each paper. Any contribution is welcome!
+
+### Project settings
+
+---
+
+* Developed using Visual Studio cmake extension (2017, 2019).
+
+* Using C++ and GLSL
+
+* Uses glew, freeglut/glfw and glm
+
+* Supported Volumes: .raw, .pvm and .syn
+
+* Supported Transfer Functions: 1D Piecewise linear .tf1d