Renamed preps_const.cpp to preps_setting.cpp
1) preps_config is renamed to prpes.config
2) preps_const.h is renamed to preps_setting.h
3) completed the -c option implementaion that changes the stored setting
1) Renamed file preps_const.h to preps_setting.h
2) Renamed preps_config to preps.config
3) Implimented -c option to update settings