Remove YARN_CONFIG and add NODE_ENV=test to test-compile (#403)
Remove YARN_CONFIG and add NODE_ENV=test to test-compile (#403)


heroku/heroku-buildpack-nodejs,Scalingo/nodejs-buildpack,caiorogerio/heroku-buildpack-grunt,caiorogerio/heroku-buildpack-grunt,heroku/heroku-buildpack-nodejs,heroku/heroku-buildpack-nodejs,Scalingo/nodejs-buildpack,heroku/heroku-buildpack-nodejs,Scalingo/nodejs-buildpack,caiorogerio/heroku-buildpack-grunt,apiaryio/heroku-buildpack-nodejs-grunt,Scalingo/nodejs-buildpack,heroku/heroku-buildpack-nodejs,Scalingo/nodejs-buildpack