run build in prestart (not start)

also rename install-web.js to install-examples.js

package.json

@@ -4,9 +4,9 @@
   "description": "library for turn-based games",
   "repository": "https://github.com/nicolodavis/boardgame.io",
   "scripts": {
-    "prestart": "node scripts/install-web.js",
-    "start": "run-p build dev:server dev:client",
-    "predev": "node scripts/install-web.js",
+    "prestart": "run-p examples:install build",
+    "start": "run-p dev:server dev:client",
+    "predev": "npm run examples:install",
     "dev": "run-p build:watch dev:server dev:client",
     "dev:client": "node scripts/dev-client.js",
     "dev:server": "cross-env NODE_ENV=development nodemon -w src -w examples -e js,ts --exec babel-node --extensions \".ts,.js\" --ignore \"src/**/*.test.ts\" --presets @babel/preset-env examples/react-web/server.js",
@@ -15,6 +15,7 @@
     "benchmark": "babel-node --extensions .ts,.js --presets @babel/preset-env,@babel/preset-typescript benchmark/index.js",
     "docs": "docsify serve docs",
     "examples": "npm run start",
+    "examples:install": "node scripts/install-examples.js",
     "pretest": "npm run lint",
     "test": "cross-env NODE_ENV=test jest --no-cache",
     "test:watch": "cross-env NODE_ENV=test jest --watch",