update readme

README.md

 # WebGL-Raycaster
 
+This raycaster is the result from my Bachelor's thesis.
+
+## Getting Started
+
+
+
+### Prerequisites
+
+No installation needed. Just a Browser which supports WebGL Version 2.0
+
+
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details