Modified travis.yml file
Fixed about_asserts.test_fill_in_values method
Modified travis.yml and Fixed about_asserts.test_assert_equality method
Modified travis.yml and Fixed about_asserts.test_a_better_way_of_asserting_equality method
Modified travis.yml and Fixed about_asserts.test_that_unittest_asserts_work_the_same_way_as_python_asserts method
Modified travis.yml and Fixed about_asserts.test_that_sometimes_we_need_to_know_the_class_type method