added a class for serializing numpy int64 objects to support int labels in the input
added a unit test for int labels in the input
added comment to int input unit test
Fix bug in test_regression_fancy_output

- Remove accidental use of `test_directory` for a feature file.
- Update name of results file.
Merge branch 'feature/numpy_int64_label_fix' of https://github.com/EducationalTestingService/skll into feature/numpy_int64_label_fix
making nose output prettier
Merge branch 'feature/numpy_int64_label_fix' of github.com:EducationalTestingService/skll into feature/numpy_int64_label_fix
remove spurious config entry in int label unit test
Merge pull request #219 from EducationalTestingService/feature/numpy_int64_label_fix

fix to support int labels