install client dependencies when installing webd deps
"license": "BSD",
"main": "src/index.js",
"scripts": {
+ "postinstall": "npm install --prefix ../client",
"start": "npm run build && npm run start:prod",
"start:verbose": "npm run build && npm run start:prod:verbose",
"build": "cross-env NODE_ENV=production babel -d build/ src/ && npm run build --prefix ../client",
