Included <cstdlib> in INIReader.cpp to get strtol().
Make ini.h have extern "C" wrapper in it so it's easier to include from C++ code (gcc seemed to do this automagically, but MSVC not so much).
Only define INI_ALLOW_MULTILINE if it's not already defined.
Added C++ INIReader class.
Moved license into LICENSE.txt, added README.txt.
Added unit tests and checked in baseline files.
Made line lengths < 80 chars.