Switch .travis.yml language to python to get virtualenv
Switch .travis.yml language to python to get virtualenv

kho/mr-cdec,pks/cdec-dtrain-legacy,pks/cdec-dtrain-legacy,kho/mr-cdec,pks/cdec-dtrain-legacy,kho/mr-cdec,pks/cdec-dtrain-legacy,pks/cdec-dtrain-legacy,kho/mr-cdec,kho/mr-cdec,kho/mr-cdec,pks/cdec-dtrain-legacy