Merge pull request #374 from avelino/update-go-gl-section

Update OpenGL section.

README.md

@@ -451,9 +451,8 @@ Join us on IRC at **#awesome-go** on freenode [web access](http://webchat.freeno
 
 *Libraries for using OpenGL in Go.*
 
-* [gl](https://github.com/go-gl/gl) - Go bindings for OpenGL. Requires an external dependency GLEW.
+* [gl](https://github.com/go-gl/gl) - Go bindings for OpenGL (generated via glow).
 * [glfw](https://github.com/go-gl/glfw) - Go bindings for GLFW 3.
-* [glow](https://github.com/go-gl/glow) - Go binding generator and bindings for OpenGL.
 * [mathgl](https://github.com/go-gl/mathgl) - Pure Go math package specialized for 3D math, with inspiration from GLM.