Merge pull request #61 from drincruz/release/0.4.0

v0.4.0 version bumps and release notes
edited setup.py to allow nose to be run via ```python setup.py test```

this fixes #62.
Merge pull request #63 from drincruz/feature/add_nose_in_setup

edited setup.py to allow nose to be run via ```python setup.py test```
v0.4.1 -- added nose in setup.py
Merge pull request #64 from drincruz/release/0.4.1

Release/0.4.1