Update README.md

README.md

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 # glPong [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-A clone of the Atari classic built with C++ and OpenGL using the GLFW and GLEW libraries.  Started as a small learning project while I was working my way through the OpenGL graphics API. For the math library, I ended up making my own 
+A clone of the Atari classic built with C++ and OpenGL using the GLFW and GLEW libraries.  Started as a small learning project while I was working my way through the OpenGL graphics API. For the math library, I ended up making my own and implementing simple vector and matrix containers coupled with basic mathematical operations. 
+For simple text rendering functionality, I ended up using the Freetype library 
 
 ![glPongGIF](https://i.imgur.com/bcsNfhw.gif)