make travisci badge in readme show status of master, we can safely ignore broken branches with experiments or wip
make travisci badge in readme show status of master, we can safely ignore broken branches with experiments or wip

cz8s/lambdacd,cz8s/lambdacd,flosell/lambdacd,flosell/lambdacd,cz8s/lambdacd,matthiasn/lambdacd,flosell/lambdacd,matthiasn/lambdacd,matthiasn/lambdacd