Merge pull request #156 from shermdog/unit-tests

Increased test coverage for facts
Added unit tests for swver.py
Added unit tests for jxml.py
pep8 changes for examples folder
pep8 changes for setup.py in root folder
Merge pull request #157 from vnitinv/unit-tests

Unit tests
Merge pull request #159 from Juniper/unit-tests

Unit tests - Facts up to 100%
Merge pull request #158 from vnitinv/pep8-examples

pep8 changes for examples folder