add command line parsing and an option for using mock data for testing on pi
add command line parsing and an option for using mock data for testing on pi

punkkills/delta5_race_timer,punkkills/delta5_race_timer,scottgchin/delta5_race_timer,scottgchin/delta5_race_timer,punkkills/delta5_race_timer,scottgchin/delta5_race_timer,scottgchin/delta5_race_timer