Update to new pypip.in links
Fix double slash
Don't try testing python2.4, maybe we can use a drone server for this
Support output in bytes using the --bytes argument
Update CONTRIBUTING.md
Better testing using tox
When using --mini and no extension is found, try all of the standard upload extensions. Fixes #62
Improve setup.py
Bump version to 0.2.6
Clean up CONTRIBUTING.md
python < 2.6 does not have the 'with' statement