Integrate master changes into develop

Integrate develop branch

Updated Physac and examples with last changes

Fix bug in isGrounded state calculations

Supports line thickness

Integrate Develop branch

It seems Sleep() behaves weird on my computer, disabled by default
returning to the busy wait loop... also re-implemented DrawFPS() to
avoid frame blitting...

Integrate master change into develop

Integrate Develop branch

- SetWindowPosition(int x, int y);
- SetWindowMonitor(int monitor);

fix for audio.c(607): error C2036 in Visual Studio.

Examples Linux Physics Fix

According to Man Pages, timespec with std=c99 needs "_POSIX_C_SOURCE 199309L". Due a some kind of bug, "#define _POSIX_C_SOURCE 199309L" doesn't work, so we must use "-D_POSIX_C_SOURCE=199309L" in compiler options.

Fixed examples link

Last character 'l' was missing on examples link.

Working in modules configuration flags...

Every part is a resource itself, they are loaded in an array

Also reviewed issue with stdbool when compiling with clang

Integrate develop branch

Replaced tabs by spaces

Integrate develop branch into master

raylib webpage has been completely reorganized and moved from gh-pages
(a pain to work with) to docs folder. Useless libs have been removed,
webs have been renamed, etc.

Now it would be easier (hopefully) to update webpage. :)

Useful to set number of repeats for a music, needs to be tested...

Moved to own repo at https://github.com/raysan5/raylib-lua

Only DESKTOP platforms (Windows, Linus, OSX)

Now it uses CharInfo data, this way, it's better aligned with the future
RRES file format data layout for sprite font characters.

Preparing for next version... still some work left... :P