Continous integration with travis

Signed-off-by: Matthias Kümmerer <matthias@matthias-k.org>
Extended README

Signed-off-by: Matthias Kümmerer <matthias@matthias-k.org>
Python3 compatibility

Signed-off-by: Matthias Kümmerer <matthias@matthias-k.org>
Merge pull request #2 from matthias-k/master

Continous integration