Chapter 28 - Makefile is missing

[LaraHa]

A Makefile or similar and/or a readme who to compile this chapter on linux (e.g. ubuntu) is missing.

[hrabcak]

Unfortunately we made this chapter for windows platform only. But there were a lot of changes in OpenGL since we wrote the chapter. In current OpenGL implementation the best approach is to use glBufferStorage with flags GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT.