add howto on parameterized pipelines
add howto on parameterized pipelines

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