build: add travis
build: add travis

dgonyeo/ignition,coreos/ignition,ajeddeloh/ignition,AlexNPavel/ignition,crawford/ignition,mischief/ignition,higebu/ignition,jonboulle/ignition,mischief/ignition,ajeddeloh/ignition,trnubo/ignition,ajeddeloh/ignition,jonboulle/ignition,higebu/ignition,AlexNPavel/ignition,AlexNPavel/ignition,coreos/ignition,trnubo/ignition,jonboulle/ignition,marineam/ignition,marineam/ignition,mischief/ignition,marineam/ignition,higebu/ignition,dgonyeo/ignition,crawford/ignition,dgonyeo/ignition,trnubo/ignition,coreos/ignition