chore, import my take on travis ci config
chore, import my take on travis ci config

to be merged as matrix build with upstream's .travis.yml

Signed-off-by: Sebastian Freundt <b09d9bb16bf9b69282010dd0632eda7cd40aa71d@fresse.org>

samanalysis/twstools,samanalysis/twstools,samanalysis/twstools