added .o files in exclude list
added .o files in exclude list

paulohrpinheiro/test-driven-learning,paulohrpinheiro/test-driven-learning,paulohrpinheiro/test-driven-learning,paulohrpinheiro/test-driven-learning,paulohrpinheiro/test-driven-learning,paulohrpinheiro/test-driven-learning,paulohrpinheiro/test-driven-learning