init: ValidateManager and its associated files
added: ignorefiles for Gon Kim's system-specific files
init: SingleWebsiteManager
init: SingleWebsiteManager.h && modified docs for SingleWebsiteManager.c
added documentation
init: FileManager and its associated files && modified header files
added documentation
move FileManager.h ../header/FileManager.h
Merge pull request #2 from imgonkim/master

[incomplete] init of managers