message: fix(packaging): fail build.sh when a package does not build
diff: @@ -2,22 +2,22 @@ rm -rf dist
  set -x
  -npm run build:express-engine
  +npm run build:express-engine || exit 1
  cp modules/express-engine/package.json dist/express-engine/package.json
  cp modules/express-engine/README.md dist/express-engine/README.md
  -npm run build:aspnetcore-engine
  +npm run build:aspnetcore-engine || exit 1
  cp modules/aspnetcore-engine/package.json dist/aspnetcore-engine/package.json
  cp modules/aspnetcore-engine/README.md dist/aspnetcore-engine/README.md
  -npm run build:hapi-engine
  +npm run build:hapi-engine || exit 1
  cp modules/hapi-engine/package.json dist/hapi-engine/package.json
  cp modules/hapi-engine/README.md dist/hapi-engine/README.md
  -npm run build:module-map-ngfactory-loader
  +npm run build:module-map-ngfactory-loader || exit 1
  cp modules/module-map-ngfactory-loader/package.json dist/module-map-ngfactory-loader/package.json
  cp modules/module-map-ngfactory-loader/README.md dist/module-map-ngfactory-loader/README.md
  