Reviewed shaders and added comments

examples/resources/shaders/base.vs

@@ -1,21 +0,0 @@
-#version 330
-
-in vec3 vertexPosition;
-in vec2 vertexTexCoord;
-in vec3 vertexNormal;
-in vec4 vertexColor;
-
-out vec2 fragTexCoord;
-out vec4 fragTintColor;
-
-uniform mat4 mvpMatrix;
-
-// NOTE: Add here your custom variables 
-
-void main()
-{
-    fragTexCoord = vertexTexCoord;
-    fragTintColor = vertexColor;
-    
-    gl_Position = mvpMatrix*vec4(vertexPosition, 1.0);
-}