added npm dependencies

.env.example

+APP_NAME=Laravel
+APP_ENV=local
+APP_KEY=
+APP_DEBUG=true
+APP_URL=http://localhost
+
+LOG_CHANNEL=stack
+LOG_DEPRECATIONS_CHANNEL=null
+LOG_LEVEL=debug
+
+DB_CONNECTION=mysql
+DB_HOST=127.0.0.1
+DB_PORT=3306
+DB_DATABASE=placeholder
+DB_USERNAME=root
+DB_PASSWORD=
+
+BROADCAST_DRIVER=log
+CACHE_DRIVER=file
+FILESYSTEM_DISK=local
+QUEUE_CONNECTION=sync
+SESSION_DRIVER=file
+SESSION_LIFETIME=120
+
+MEMCACHED_HOST=127.0.0.1
+
+REDIS_HOST=127.0.0.1
+REDIS_PASSWORD=null
+REDIS_PORT=6379
+
+MAIL_MAILER=smtp
+MAIL_HOST=mailhog
+MAIL_PORT=1025
+MAIL_USERNAME=null
+MAIL_PASSWORD=null
+MAIL_ENCRYPTION=null
+MAIL_FROM_ADDRESS="hello@example.com"
+MAIL_FROM_NAME="${APP_NAME}"
+
+AWS_ACCESS_KEY_ID=
+AWS_SECRET_ACCESS_KEY=
+AWS_DEFAULT_REGION=us-east-1
+AWS_BUCKET=
+AWS_USE_PATH_STYLE_ENDPOINT=false
+
+PUSHER_APP_ID=
+PUSHER_APP_KEY=
+PUSHER_APP_SECRET=
+PUSHER_APP_CLUSTER=mt1
+
+MIX_PUSHER_APP_KEY="${PUSHER_APP_KEY}"
+MIX_PUSHER_APP_CLUSTER="${PUSHER_APP_CLUSTER}"