added the readme

shaders/skybox.vert

@@ -0,0 +1,15 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+
+out vec3 TexCoords;
+
+uniform mat4 proj;
+uniform mat4 view;
+
+void main()
+{
+    TexCoords = aPos;
+    vec4 pos = proj * view * vec4(aPos, 1.0);
+    //gl_Position = pos.xyww
+    gl_Position = pos;
+}