instructions on locking the buildpack version
instructions on locking the buildpack version

Grahahax/nodejs-buildpack,ks2software/nodejs-buildpack,roder/nodejs-buildpack,ks2software/nodejs-buildpack,glawson6/heroku-buildpack-nodejs,Grahahax/nodejs-buildpack,fcruxen/heroku-buildpack-nodejs,raghuveerthummeti/nodejs-buildpack,brunoleite/heroku-buildpack-nodejs-jspm,sailrish/heroku-buildpack-coffee,mrc535s/wkhtmltopdfbp,JasonZigelbaum/heroku-buildpack-nodejs,cloudfoundry/nodejs-buildpack,ShreyasWao/heroku-buildpack-nodejs,shoetomydixi/node_sigma_zapp_buildpack,Jell-E/heroku-buildpack-nodejs-rust,kauffecup/nodejs-buildpack,kirs/heroku-buildpack-nodejs,Jonatasmz/heroku-buildpack-nodejs,pkumar-appd/nodejs-buildpack,ks2software/nodejs-buildpack,salesforceidentity/heroku-buildpack-nodejs-jdk8,cheeyeo/heroku-buildpack-nodejs,caiorogerio/heroku-buildpack-grunt,karthikeyabhaghavatula/nodejs_buildpack,mikeyoon/heroku-buildpack-nodejs,cloudfoundry/nodejs-buildpack,roder/nodejs-buildpack,effinggames/heroku-buildpack-nodejs-bower-gulp,guilleva/heroku-buildpack-nodejs,cloudfoundry/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,caiorogerio/heroku-buildpack-grunt,simonjjones/snowedjs_buildpack,Scalingo/nodejs-buildpack,shuber/heroku-buildpack-nodejs,The18thWarrior/ethereum-buildpack,ks2software/nodejs-buildpack,marnold6/nodejs_buildpack,mrc535s/wkhtmltopdfbp,shedd/heroku-buildpack-nodejs,ShakrMedia/heroku-buildpack-nodejs,kauffecup/nodejs-buildpack,tweettypography/heroku-buildpack-nodejs,carouselapps/heroku-buildpack-nodejs,Grahahax/nodejs-buildpack,ks2software/nodejs-buildpack,marnold6/nodejs_buildpack,justinwalsh/heroku-buildpack-nodejs,heroku/heroku-buildpack-nodejs,NSWIDER/nodejs-oracle-buildpack,Hylozoic/heroku-buildpack-nodejs-babel,bionikspoon/annotation-tool-heroku-buildpack-nodejs,GoeGaming/heroku-buildpack-nodejs,mmgm/nodejs-buildpack,mmgm/nodejs-buildpack,robgraeber/heroku-buildpack-nodejs-gulp,Scalingo/nodejs-buildpack,mmgm/nodejs-buildpack,apiaryio/heroku-buildpack-nodejs-grunt,bionikspoon/heroku-buildpack-nodejs,NSWIDER/nodejs-oracle-buildpack,heroku/heroku-buildpack-nodejs,heroku/heroku-buildpack-nodejs,roder/nodejs-buildpack,Scalingo/nodejs-buildpack,yookoala/heroku-buildpack-nodejs,robgraeber/heroku-buildpack-nodejs,heroku/heroku-buildpack-nodejs,realtymaps/heroku-buildpack-assets,sailrish/heroku-buildpack-nodejs,Scalingo/nodejs-buildpack,ks2software/nodejs-buildpack,marnold6/nodejs_buildpack,ks2software/nodejs-buildpack,CloudSide/heroku-buildpack-nodejs,The18thWarrior/ethereum-buildpack,goodeggs/heroku-buildpack-nodejs,karthikeyabhaghavatula/nodejs_buildpack,mergermarket/heroku-buildpack-nodejs,pkumar-appd/nodejs-buildpack,dshafer/heroku-buildpack-nodejs,Amandeepsinghghai/heroku-buildpack-nodejs,diegobent/heroku-buildpack-nodejs,raghuveerthummeti/nodejs-buildpack,mrc535s/wkhtmltopdfbp,karthikeyabhaghavatula/nodejs_buildpack,oocl-ncc-itm/nodejs-buildpack,kauffecup/nodejs-buildpack,elais/heroku-buildpack-nodejs,piglovesyou/heroku-buildpack-nodejs,simonjjones/snowedjs_buildpack,tomfa/heroku-buildpack-nodejs,caiorogerio/heroku-buildpack-grunt,simonjjones/snowedjs_buildpack,nikhil-bhandari/ng-cli-buildpack,nemesiscodex/heroku-buildpack-nodejs,kudos/heroku-buildpack-nodejs-jspm,TheHealthPros/heroku-buildpack-nodejs,heroku/heroku-buildpack-nodejs,TJM/heroku-buildpack-nodejs,totapari/heroku-buildpack-nodejs,Scalingo/nodejs-buildpack,raghuveerthummeti/nodejs-buildpack,cloudfoundry/nodejs-buildpack,tamdao/heroku-buildpack-nodejs,oocl-ncc-itm/nodejs-buildpack,pkumar-appd/nodejs-buildpack,cloudControl/buildpack-nodejs,NSWIDER/nodejs-oracle-buildpack,Ferrari/heroku-buildpack-nodejs