Point out README.md build section from tutorial.
Point out README.md build section from tutorial.

prometheus/docs,chosenken/docs,bluecmd/prometheus-docs,du2016/prometheus-docs,ChaoticMind/docs,pdbogen/docs,bluecmd/prometheus-docs,ChaoticMind/docs,Cepave/openfalcon.io,jimmidyson/docs,jmptrader/docs,evanphx/docs,open-falcon/open-falcon.github.io,dln/docs,evanphx/docs,fabxc/docs,dln/docs,jmptrader/docs,ddfreyne/prometheus-docs,fabxc/docs,jimmidyson/docs,jimmidyson/docs,chosenken/docs,open-falcon/open-falcon.github.io,du2016/prometheus-docs,dato/prometheus-docs,vic3lord/docs,ddfreyne/prometheus-docs,vic3lord/docs,ddfreyne/prometheus-docs,chosenken/docs,evanphx/docs,open-falcon/open-falcon.github.io,chosenken/docs,bluecmd/prometheus-docs,ddfreyne/prometheus-docs,pdbogen/docs,dato/prometheus-docs,dln/docs,jmptrader/docs,tcolgate/docs,Cepave/openfalcon.io,Cepave/openfalcon.io,pdbogen/docs,du2016/prometheus-docs,tcolgate/docs,ChaoticMind/docs,dato/prometheus-docs,prometheus/docs,tcolgate/docs,fabxc/docs,vic3lord/docs,prometheus/docs