added more dummy-data to Challenge 1 (Calculator)
added more dummy-data to Challenge 1 (Calculator)

tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong,Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong