Added package building to npm install

.travis.yml

@@ -34,7 +34,6 @@ jobs:
     env: WP_VERSION=latest WP_MULTISITE=0 RUN_E2E=1
     script:
       - npm run build:assets
-      - npm run build:packages
       - npm install jest --global
       - npm run docker:up
       - npm run test:e2e

package.json

@@ -13,6 +13,7 @@
     "wp_org_slug": "woocommerce"
   },
   "scripts": {
+    "install": "lerna bootstrap",
     "build": "./bin/build-zip.sh",
     "build:core": "grunt && npm run makepot",
     "build:dev": "npm run build:core && npm run build:packages",