explictly set the requirement of six and requests
update docker-py to 5.0
fix #45
add Makefile
create binary for mac os
Update README.rst
makefile: upload osx binary to aws s3; publish to pypi
add formula for homebrew
update version to 0.9.8
Update README.rst
add TLS support
bump version
update python-tutum version, which fix #49
Merge branch 'master' into staging