removed unnecessary catching of exceptions (so that oozie/falcon can detect job failures)
Merge pull request #110 from angadsingh/exceptions-cleanup

removed unnecessary catching of exceptions
Add code coverage via coveralls.io

Signed-off-by: Chris Aniszczyk <zx@twitter.com>
Merge pull request #114 from twitter/add-coveralls

Add code coverage via coveralls.io
Merge branch 'master' of https://github.com/twitter/hraven