added writer code and tests
Add tox support

Add tox config file, making Jenkins testing easier
(see https://www.shiningpanda-ci.com/docs/tutorials/tox.html
for an example).

More info: http://tox.readthedocs.org/en/latest/example/jenkins.html
Merge branch 'ged'
Merge branch 'master' of https://github.com/ged-lab/screed
Merge pull request #6 from luizirber/patch-1

Add tox support
Update .travis.yml
Merge pull request #5 from luizirber/master

Fix tests where order is important.
Merge branch 'master' of https://github.com/ged-lab/screed
sync with pypi 0.7.1 release
sniff compression type incl zip
autopep8
Merge pull request #8 from ged-lab/fix/compression-sniff

Fix/compression sniff
Update docs with usable instructions (it is broken since 2010)