[core] Add support for yarn workspaces run

Author: eps1lon

packages/eslint-plugin-material-ui/package.json

@@ -5,6 +5,7 @@
   "description": "Custom eslint rules for Material-UI.",
   "main": "src/index.js",
   "scripts": {
+    "build": "echo \"Nothing to build in eslint-plugin-material-ui\"",
     "test": "mocha src/**/*.test.js"
   },
   "repository": {

packages/material-ui-benchmark/package.json

@@ -13,6 +13,7 @@
   "homepage": "https://github.com/mui-org/material-ui/tree/master/packages/material-ui-benchmark",
   "scripts": {
     "benchmark": "cd ../../ && NODE_ENV=production BABEL_ENV=docs-production babel-node packages/material-ui-benchmark/src/benchmark.js",
+    "build": "echo \"Nothing to build in @material-ui/benchmark\"",
     "server": "cd ../../ && NODE_ENV=production BABEL_ENV=docs-production babel-node packages/material-ui-benchmark/src/server.js"
   },
   "devDependencies": {},