prune devDependencies after build
prune devDependencies after build

mbuchetics/heroku-buildpack-nodejs-grunt,KamranAsif/heroku-buildpack-nodejs-bower-grunt,gtothesquare/heroku-buildpack-nodejs-grunt,TechRelease/cf-buildpack-nodejs,sibeliusseraphini/heroku-buildpack-nodejs-bower-grunt,gvelo/heroku-buildpack-nodejs-grunt,twilson63/custom-buildpack-nodejs-cloud-foundry,TechRelease/cf-buildpack-nodejs,Ensequence/heroku-buildpack-yo-angular,objectpartners/heroku-buildpack-nodejs-grunt,imothee/heroku-buildpack-nodejs-grunt,nknj/heroku-buildpack-yo-angular,fbaraujo/heroku-buildpack-yo-angular,twilson63/custom-buildpack-nodejs-cups,danielgranat/heroku-buildpack-nodejs-grunt,cnbin/heroku-buildpack-nodejs-grunt