refactor project files/makefile
using int constant array instead of function to find hand
update test using the int constant array
move module lib into lib folder
build several main exec
add dependency for main
change dependency for main
add usage
declare HAND_INIT in header file
declare HAND_ADD in header file
add string representation
calculate hand and display string representation
stop adding card to a hand already bust
prefix your command-program by blackjack
add command-line app to apply strategy
using getopt lib to parse long options
print mutiple line
default decisions using decision flags