mod_harbour documentation

[Antonio Linares]

mod_harbour wiki:
https://github.com/FiveTechSoft/mod_harbour/wiki
Please review also:
https://github.com/FiveTechSoft/mod_harbour/blob/master/windows/readme.md
https://github.com/FiveTechSoft/mod_harbour/blob/master/linux/readme.md
https://github.com/FiveTechSoft/mod_harbour/blob/master/osx/readme.md

third party libraries:
Charly's WDO:
https://github.com/carles9000/wdo
Charly's Mercury:
https://github.com/carles9000/mercury

mod_harbour examples:
live demo: https://www.modharbour.org/modharbour_samples/
source code: https://github.com/FiveTechSoft/mod_harbour/tree/master/samples