Merge pull request #1 from nephics/master

documentation updates, and minor feature changes
Merge pull request #2 from wojons/master

Few updates
Merge pull request #3 from wojons/master

updates to disk stats and dump network interface
cleanup code
more unittests and code cleanup
added tox config for py26 and py27
Update README.rst
added travis ci yaml config
update README with travis-ci status
Update README.rst
Update README.rst
Update README.rst
Update README.rst
added .tox to .gitignore
refactored unit tests
python3 compatibilty.  linux_metrics now works under python 3
added pypy to tox.ini
finished py3 compatibility
bumped version to .0.1.4 for pypi release
bumped version to .0.1.4dev after release