make test case instances report correct test results
Merge branch 'master' of https://github.com/Yelp/Testify into bryce_introspection

Conflicts:
	test/test_case_test.py
store test results in a mapping rather than as method attributes
Merge pull request #173 from blampe/bryce_introspection

make test case instances report correct test results
Merge branch 'master' of https://github.com/Yelp/Testify into bryce_182

Conflicts:
	testify/test_case.py