added pylint and cleaned up test-requirements
Merge remote-tracking branch 'upstream/master' into tox
made tox pylint checking optional
Update setup.cfg

Update nosetests to automatically generate coverage report.
Note: we do not test api yet, that's why "#match = ^test" has been commented out.
we haven't enforec 100% coverage yet, so "#cover-min-percentage = 100" has been commented out.
Merge pull request #72 from tonytan4ever/patch-1

Update setup.cfg
Merge pull request #70 from amitgandhinz/tox

Added pylint checking