add path_progress to gitignore

Path_progress gets automatically updated each time
path_to_enlightenment gets run, so there is no need to
track changes in the repo
solve about_assert test_assert_truth
solve about_asserts test_assert_with_message
solve about_asserts test_assert_equality
solve about_asserts test_a_better_way_of_assert_equality
solve about_asserts test_fill_in_values