fixed files path in 'Distribution' section
changed titles size
changed 'OpenGL 3.3 tutorials with LWJGL' title in 'Learning Modern 3D Graphics Programming with LWJGL';
updated 'Learning Modern 3D Graphics Programming with LWJGL' section
changed 'Installation' title to 'Usage';
updated 'Usage' section
changed 'Distribution' title to 'License'
changed 'Updates' title to 'Notes';
updated 'Notes' section;
closed #11: added this problem in the 'Notes' section
added porting considerations to 'Notes' section