added a bit of structure to the walkthrough
added a bit of structure to the walkthrough

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