+ vertex format (position, texture coords, normal)
* ShaderProgram.GetVertexAtribName is no more class method
* ShaderProgram.AddShader becomes Attach
* BindAttribLocation over all vertex attribs. Works on nvidia (fails if call EnableVertexAttribArray)
- clean up
* demo1 - VertexFormat changed due to future test of normals
- glrpack files (unnecessary at now)