Set GL version to 3.1 (lowest possible version), fixed cleanup bug when calling Stop(), added input handling.

README.md

@@ -1,14 +1,13 @@
 # go-game (package "goga")
 
 Game engine written in Go using OpenGL and GLFW. Mostly for 2D rendering, but also capable of rendering 3D, providing everything to get you started.
-**Under heavy development, do not use yet!**
 
 ## Install
 
 go-game requires OpenGL and GLFW. The following three steps install everything you need:
 
 ```
-go get github.com/go-gl/gl/v4.5-core/gl
+go get github.com/go-gl/gl/v3.1-core/gl
 go get github.com/go-gl/glfw/v3.1/glfw
 go get github.com/DeKugelschieber/go-game
 ```
@@ -17,18 +16,16 @@ You also need a cgo compiler (typically gcc) and GL/GLFW development libraries a
 
 ## Usage
 
-*WIP*
-
 Examples can be found within the demo folder. For full reference visit: https://godoc.org/github.com/DeKugelschieber/go-game
 
 ## Dependencies
 
 * https://github.com/go-gl/gl
-    - 4.5-core
+    - 3.1-core
 * https://github.com/go-gl/glfw
     - 3.1
 
-To use an older GL version, you need to replace the GL imports in package goga. It should mostly be compatible down to 3.x.
+To use a different GL version, you need to replace the GL imports in package goga.
 
 ## Contribute